| Index: contrib/tzdata/Theory |
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| -Theory and pragmatics of the tz code and data |
| - |
| - |
| ------ Outline ----- |
| - |
| - Scope of the tz database |
| - Names of time zone rules |
| - Time zone abbreviations |
| - Accuracy of the tz database |
| - Time and date functions |
| - Calendrical issues |
| - Time and time zones on Mars |
| - |
| - |
| ------ Scope of the tz database ----- |
| - |
| -The tz database attempts to record the history and predicted future of |
| -all computer-based clocks that track civil time. To represent this |
| -data, the world is partitioned into regions whose clocks all agree |
| -about time stamps that occur after the somewhat-arbitrary cutoff point |
| -of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region, |
| -the database records all known clock transitions, and labels the region |
| -with a notable location. Although 1970 is a somewhat-arbitrary |
| -cutoff, there are significant challenges to moving the cutoff earlier |
| -even by a decade or two, due to the wide variety of local practices |
| -before computer timekeeping became prevalent. |
| - |
| -Clock transitions before 1970 are recorded for each such location, |
| -because most systems support time stamps before 1970 and could |
| -misbehave if data entries were omitted for pre-1970 transitions. |
| -However, the database is not designed for and does not suffice for |
| -applications requiring accurate handling of all past times everywhere, |
| -as it would take far too much effort and guesswork to record all |
| -details of pre-1970 civil timekeeping. |
| - |
| -As described below, reference source code for using the tz database is |
| -also available. The tz code is upwards compatible with POSIX, an |
| -international standard for UNIX-like systems. As of this writing, the |
| -current edition of POSIX is: |
| - |
| - The Open Group Base Specifications Issue 7 |
| - IEEE Std 1003.1, 2013 Edition |
| - <http://pubs.opengroup.org/onlinepubs/9699919799/> |
| - |
| - |
| - |
| ------ Names of time zone rules ----- |
| - |
| -Each of the database's time zone rules has a unique name. |
| -Inexperienced users are not expected to select these names unaided. |
| -Distributors should provide documentation and/or a simple selection |
| -interface that explains the names; for one example, see the 'tzselect' |
| -program in the tz code. The Unicode Common Locale Data Repository |
| -<http://cldr.unicode.org/> contains data that may be useful for other |
| -selection interfaces. |
| - |
| -The time zone rule naming conventions attempt to strike a balance |
| -among the following goals: |
| - |
| - * Uniquely identify every region where clocks have agreed since 1970. |
| - This is essential for the intended use: static clocks keeping local |
| - civil time. |
| - |
| - * Indicate to experts where that region is. |
| - |
| - * Be robust in the presence of political changes. For example, names |
| - of countries are ordinarily not used, to avoid incompatibilities |
| - when countries change their name (e.g. Zaire->Congo) or when |
| - locations change countries (e.g. Hong Kong from UK colony to |
| - China). |
| - |
| - * Be portable to a wide variety of implementations. |
| - |
| - * Use a consistent naming conventions over the entire world. |
| - |
| -Names normally have the form AREA/LOCATION, where AREA is the name |
| -of a continent or ocean, and LOCATION is the name of a specific |
| -location within that region. North and South America share the same |
| -area, 'America'. Typical names are 'Africa/Cairo', 'America/New_York', |
| -and 'Pacific/Honolulu'. |
| - |
| -Here are the general rules used for choosing location names, |
| -in decreasing order of importance: |
| - |
| - Use only valid POSIX file name components (i.e., the parts of |
| - names other than '/'). Do not use the file name |
| - components '.' and '..'. Within a file name component, |
| - use only ASCII letters, '.', '-' and '_'. Do not use |
| - digits, as that might create an ambiguity with POSIX |
| - TZ strings. A file name component must not exceed 14 |
| - characters or start with '-'. E.g., prefer 'Brunei' |
| - to 'Bandar_Seri_Begawan'. Exceptions: see the discussion |
| - of legacy names below. |
| - A name must not be empty, or contain '//', or start or end with '/'. |
| - Do not use names that differ only in case. Although the reference |
| - implementation is case-sensitive, some other implementations |
| - are not, and they would mishandle names differing only in case. |
| - If one name A is an initial prefix of another name AB (ignoring case), |
| - then B must not start with '/', as a regular file cannot have |
| - the same name as a directory in POSIX. For example, |
| - 'America/New_York' precludes 'America/New_York/Bronx'. |
| - Uninhabited regions like the North Pole and Bouvet Island |
| - do not need locations, since local time is not defined there. |
| - There should typically be at least one name for each ISO 3166-1 |
| - officially assigned two-letter code for an inhabited country |
| - or territory. |
| - If all the clocks in a region have agreed since 1970, |
| - don't bother to include more than one location |
| - even if subregions' clocks disagreed before 1970. |
| - Otherwise these tables would become annoyingly large. |
| - If a name is ambiguous, use a less ambiguous alternative; |
| - e.g. many cities are named San José and Georgetown, so |
| - prefer 'Costa_Rica' to 'San_Jose' and 'Guyana' to 'Georgetown'. |
| - Keep locations compact. Use cities or small islands, not countries |
| - or regions, so that any future time zone changes do not split |
| - locations into different time zones. E.g. prefer 'Paris' |
| - to 'France', since France has had multiple time zones. |
| - Use mainstream English spelling, e.g. prefer 'Rome' to 'Roma', and |
| - prefer 'Athens' to the Greek 'Αθήνα' or the Romanized 'Athína'. |
| - The POSIX file name restrictions encourage this rule. |
| - Use the most populous among locations in a zone, |
| - e.g. prefer 'Shanghai' to 'Beijing'. Among locations with |
| - similar populations, pick the best-known location, |
| - e.g. prefer 'Rome' to 'Milan'. |
| - Use the singular form, e.g. prefer 'Canary' to 'Canaries'. |
| - Omit common suffixes like '_Islands' and '_City', unless that |
| - would lead to ambiguity. E.g. prefer 'Cayman' to |
| - 'Cayman_Islands' and 'Guatemala' to 'Guatemala_City', |
| - but prefer 'Mexico_City' to 'Mexico' because the country |
| - of Mexico has several time zones. |
| - Use '_' to represent a space. |
| - Omit '.' from abbreviations in names, e.g. prefer 'St_Helena' |
| - to 'St._Helena'. |
| - Do not change established names if they only marginally |
| - violate the above rules. For example, don't change |
| - the existing name 'Rome' to 'Milan' merely because |
| - Milan's population has grown to be somewhat greater |
| - than Rome's. |
| - If a name is changed, put its old spelling in the 'backward' file. |
| - This means old spellings will continue to work. |
| - |
| -The file 'zone1970.tab' lists geographical locations used to name time |
| -zone rules. It is intended to be an exhaustive list of names for |
| -geographic regions as described above; this is a subset of the names |
| -in the data. Although a 'zone1970.tab' location's longitude |
| -corresponds to its LMT offset with one hour for every 15 degrees east |
| -longitude, this relationship is not exact. |
| - |
| -Older versions of this package used a different naming scheme, |
| -and these older names are still supported. |
| -See the file 'backward' for most of these older names |
| -(e.g., 'US/Eastern' instead of 'America/New_York'). |
| -The other old-fashioned names still supported are |
| -'WET', 'CET', 'MET', and 'EET' (see the file 'europe'). |
| - |
| -Older versions of this package defined legacy names that are |
| -incompatible with the first rule of location names, but which are |
| -still supported. These legacy names are mostly defined in the file |
| -'etcetera'. Also, the file 'backward' defines the legacy names |
| -'GMT0', 'GMT-0', 'GMT+0' and 'Canada/East-Saskatchewan', and the file |
| -'northamerica' defines the legacy names 'EST5EDT', 'CST6CDT', |
| -'MST7MDT', and 'PST8PDT'. |
| - |
| -Excluding 'backward' should not affect the other data. If |
| -'backward' is excluded, excluding 'etcetera' should not affect the |
| -remaining data. |
| - |
| - |
| ------ Time zone abbreviations ----- |
| - |
| -When this package is installed, it generates time zone abbreviations |
| -like 'EST' to be compatible with human tradition and POSIX. |
| -Here are the general rules used for choosing time zone abbreviations, |
| -in decreasing order of importance: |
| - |
| - Use three or more characters that are ASCII alphanumerics or '+' or '-'. |
| - Previous editions of this database also used characters like |
| - ' ' and '?', but these characters have a special meaning to |
| - the shell and cause commands like |
| - set `date` |
| - to have unexpected effects. |
| - Previous editions of this rule required upper-case letters, |
| - but the Congressman who introduced Chamorro Standard Time |
| - preferred "ChST", so lower-case letters are now allowed. |
| - Also, POSIX from 2001 on relaxed the rule to allow '-', '+', |
| - and alphanumeric characters from the portable character set |
| - in the current locale. In practice ASCII alphanumerics and |
| - '+' and '-' are safe in all locales. |
| - |
| - In other words, in the C locale the POSIX extended regular |
| - expression [-+[:alnum:]]{3,} should match the abbreviation. |
| - This guarantees that all abbreviations could have been |
| - specified by a POSIX TZ string. |
| - |
| - Use abbreviations that are in common use among English-speakers, |
| - e.g. 'EST' for Eastern Standard Time in North America. |
| - We assume that applications translate them to other languages |
| - as part of the normal localization process; for example, |
| - a French application might translate 'EST' to 'HNE'. |
| - |
| - For zones whose times are taken from a city's longitude, use the |
| - traditional xMT notation, e.g. 'PMT' for Paris Mean Time. |
| - The only name like this in current use is 'GMT'. |
| - |
| - Use 'LMT' for local mean time of locations before the introduction |
| - of standard time; see "Scope of the tz database". |
| - |
| - If there is no common English abbreviation, use numeric offsets like |
| - -05 and +0830 that are generated by zic's %z notation. |
| - |
| - [The remaining guidelines predate the introduction of %z. |
| - They are problematic as they mean tz data entries invent |
| - notation rather than record it. These guidelines are now |
| - deprecated and the plan is to gradually move to %z for |
| - inhabited locations and to "-00" for uninhabited locations.] |
| - |
| - If there is no common English abbreviation, abbreviate the English |
| - translation of the usual phrase used by native speakers. |
| - If this is not available or is a phrase mentioning the country |
| - (e.g. "Cape Verde Time"), then: |
| - |
| - When a country is identified with a single or principal zone, |
| - append 'T' to the country's ISO code, e.g. 'CVT' for |
| - Cape Verde Time. For summer time append 'ST'; |
| - for double summer time append 'DST'; etc. |
| - Otherwise, take the first three letters of an English place |
| - name identifying each zone and append 'T', 'ST', etc. |
| - as before; e.g. 'VLAST' for VLAdivostok Summer Time. |
| - |
| - Use UT (with time zone abbreviation '-00') for locations while |
| - uninhabited. The leading '-' is a flag that the time |
| - zone is in some sense undefined; this notation is |
| - derived from Internet RFC 3339. |
| - |
| -Application writers should note that these abbreviations are ambiguous |
| -in practice: e.g. 'CST' has a different meaning in China than |
| -it does in the United States. In new applications, it's often better |
| -to use numeric UT offsets like '-0600' instead of time zone |
| -abbreviations like 'CST'; this avoids the ambiguity. |
| - |
| - |
| ------ Accuracy of the tz database ----- |
| - |
| -The tz database is not authoritative, and it surely has errors. |
| -Corrections are welcome and encouraged; see the file CONTRIBUTING. |
| -Users requiring authoritative data should consult national standards |
| -bodies and the references cited in the database's comments. |
| - |
| -Errors in the tz database arise from many sources: |
| - |
| - * The tz database predicts future time stamps, and current predictions |
| - will be incorrect after future governments change the rules. |
| - For example, if today someone schedules a meeting for 13:00 next |
| - October 1, Casablanca time, and tomorrow Morocco changes its |
| - daylight saving rules, software can mess up after the rule change |
| - if it blithely relies on conversions made before the change. |
| - |
| - * The pre-1970 entries in this database cover only a tiny sliver of how |
| - clocks actually behaved; the vast majority of the necessary |
| - information was lost or never recorded. Thousands more zones would |
| - be needed if the tz database's scope were extended to cover even |
| - just the known or guessed history of standard time; for example, |
| - the current single entry for France would need to split into dozens |
| - of entries, perhaps hundreds. And in most of the world even this |
| - approach would be misleading due to widespread disagreement or |
| - indifference about what times should be observed. In her 2015 book |
| - "The Global Transformation of Time, 1870-1950", Vanessa Ogle writes |
| - "Outside of Europe and North America there was no system of time |
| - zones at all, often not even a stable landscape of mean times, |
| - prior to the middle decades of the twentieth century". See: |
| - Timothy Shenk, Booked: A Global History of Time. Dissent 2015-12-17 |
| - https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanessa-ogle |
| - |
| - * Most of the pre-1970 data entries come from unreliable sources, often |
| - astrology books that lack citations and whose compilers evidently |
| - invented entries when the true facts were unknown, without |
| - reporting which entries were known and which were invented. |
| - These books often contradict each other or give implausible entries, |
| - and on the rare occasions when they are checked they are |
| - typically found to be incorrect. |
| - |
| - * For the UK the tz database relies on years of first-class work done by |
| - Joseph Myers and others; see <http://www.polyomino.org.uk/british-time/>. |
| - Other countries are not done nearly as well. |
| - |
| - * Sometimes, different people in the same city would maintain clocks |
| - that differed significantly. Railway time was used by railroad |
| - companies (which did not always agree with each other), |
| - church-clock time was used for birth certificates, etc. |
| - Often this was merely common practice, but sometimes it was set by law. |
| - For example, from 1891 to 1911 the UT offset in France was legally |
| - 0:09:21 outside train stations and 0:04:21 inside. |
| - |
| - * Although a named location in the tz database stands for the |
| - containing region, its pre-1970 data entries are often accurate for |
| - only a small subset of that region. For example, Europe/London |
| - stands for the United Kingdom, but its pre-1847 times are valid |
| - only for locations that have London's exact meridian, and its 1847 |
| - transition to GMT is known to be valid only for the L&NW and the |
| - Caledonian railways. |
| - |
| - * The tz database does not record the earliest time for which a zone's |
| - data entries are thereafter valid for every location in the region. |
| - For example, Europe/London is valid for all locations in its |
| - region after GMT was made the standard time, but the date of |
| - standardization (1880-08-02) is not in the tz database, other than |
| - in commentary. For many zones the earliest time of validity is |
| - unknown. |
| - |
| - * The tz database does not record a region's boundaries, and in many |
| - cases the boundaries are not known. For example, the zone |
| - America/Kentucky/Louisville represents a region around the city of |
| - Louisville, the boundaries of which are unclear. |
| - |
| - * Changes that are modeled as instantaneous transitions in the tz |
| - database were often spread out over hours, days, or even decades. |
| - |
| - * Even if the time is specified by law, locations sometimes |
| - deliberately flout the law. |
| - |
| - * Early timekeeping practices, even assuming perfect clocks, were |
| - often not specified to the accuracy that the tz database requires. |
| - |
| - * Sometimes historical timekeeping was specified more precisely |
| - than what the tz database can handle. For example, from 1909 to |
| - 1937 Netherlands clocks were legally UT +00:19:32.13, but the tz |
| - database cannot represent the fractional second. |
| - |
| - * Even when all the timestamp transitions recorded by the tz database |
| - are correct, the tz rules that generate them may not faithfully |
| - reflect the historical rules. For example, from 1922 until World |
| - War II the UK moved clocks forward the day following the third |
| - Saturday in April unless that was Easter, in which case it moved |
| - clocks forward the previous Sunday. Because the tz database has no |
| - way to specify Easter, these exceptional years are entered as |
| - separate tz Rule lines, even though the legal rules did not change. |
| - |
| - * The tz database models pre-standard time using the proleptic Gregorian |
| - calendar and local mean time (LMT), but many people used other |
| - calendars and other timescales. For example, the Roman Empire used |
| - the Julian calendar, and had 12 varying-length daytime hours with a |
| - non-hour-based system at night. |
| - |
| - * Early clocks were less reliable, and data entries do not represent |
| - this unreliability. |
| - |
| - * As for leap seconds, civil time was not based on atomic time before |
| - 1972, and we don't know the history of earth's rotation accurately |
| - enough to map SI seconds to historical solar time to more than |
| - about one-hour accuracy. See: Morrison LV, Stephenson FR. |
| - Historical values of the Earth's clock error Delta T and the |
| - calculation of eclipses. J Hist Astron. 2004;35:327-36 |
| - <http://adsabs.harvard.edu/full/2004JHA....35..327M>; |
| - Historical values of the Earth's clock error. J Hist Astron. 2005;36:339 |
| - <http://adsabs.harvard.edu/full/2005JHA....36..339M>. |
| - |
| - * The relationship between POSIX time (that is, UTC but ignoring leap |
| - seconds) and UTC is not agreed upon after 1972. Although the POSIX |
| - clock officially stops during an inserted leap second, at least one |
| - proposed standard has it jumping back a second instead; and in |
| - practice POSIX clocks more typically either progress glacially during |
| - a leap second, or are slightly slowed while near a leap second. |
| - |
| - * The tz database does not represent how uncertain its information is. |
| - Ideally it would contain information about when data entries are |
| - incomplete or dicey. Partial temporal knowledge is a field of |
| - active research, though, and it's not clear how to apply it here. |
| - |
| -In short, many, perhaps most, of the tz database's pre-1970 and future |
| -time stamps are either wrong or misleading. Any attempt to pass the |
| -tz database off as the definition of time should be unacceptable to |
| -anybody who cares about the facts. In particular, the tz database's |
| -LMT offsets should not be considered meaningful, and should not prompt |
| -creation of zones merely because two locations differ in LMT or |
| -transitioned to standard time at different dates. |
| - |
| - |
| ------ Time and date functions ----- |
| - |
| -The tz code contains time and date functions that are upwards |
| -compatible with those of POSIX. |
| - |
| -POSIX has the following properties and limitations. |
| - |
| -* In POSIX, time display in a process is controlled by the |
| - environment variable TZ. Unfortunately, the POSIX TZ string takes |
| - a form that is hard to describe and is error-prone in practice. |
| - Also, POSIX TZ strings can't deal with other (for example, Israeli) |
| - daylight saving time rules, or situations where more than two |
| - time zone abbreviations are used in an area. |
| - |
| - The POSIX TZ string takes the following form: |
| - |
| - stdoffset[dst[offset][,date[/time],date[/time]]] |
| - |
| - where: |
| - |
| - std and dst |
| - are 3 or more characters specifying the standard |
| - and daylight saving time (DST) zone names. |
| - Starting with POSIX.1-2001, std and dst may also be |
| - in a quoted form like "<UTC+10>"; this allows |
| - "+" and "-" in the names. |
| - offset |
| - is of the form '[+-]hh:[mm[:ss]]' and specifies the |
| - offset west of UT. 'hh' may be a single digit; 0<=hh<=24. |
| - The default DST offset is one hour ahead of standard time. |
| - date[/time],date[/time] |
| - specifies the beginning and end of DST. If this is absent, |
| - the system supplies its own rules for DST, and these can |
| - differ from year to year; typically US DST rules are used. |
| - time |
| - takes the form 'hh:[mm[:ss]]' and defaults to 02:00. |
| - This is the same format as the offset, except that a |
| - leading '+' or '-' is not allowed. |
| - date |
| - takes one of the following forms: |
| - Jn (1<=n<=365) |
| - origin-1 day number not counting February 29 |
| - n (0<=n<=365) |
| - origin-0 day number counting February 29 if present |
| - Mm.n.d (0[Sunday]<=d<=6[Saturday], 1<=n<=5, 1<=m<=12) |
| - for the dth day of week n of month m of the year, |
| - where week 1 is the first week in which day d appears, |
| - and '5' stands for the last week in which day d appears |
| - (which may be either the 4th or 5th week). |
| - Typically, this is the only useful form; |
| - the n and Jn forms are rarely used. |
| - |
| - Here is an example POSIX TZ string, for US Pacific time using rules |
| - appropriate from 1987 through 2006: |
| - |
| - TZ='PST8PDT,M4.1.0/02:00,M10.5.0/02:00' |
| - |
| - This POSIX TZ string is hard to remember, and mishandles time stamps |
| - before 1987 and after 2006. With this package you can use this |
| - instead: |
| - |
| - TZ='America/Los_Angeles' |
| - |
| -* POSIX does not define the exact meaning of TZ values like "EST5EDT". |
| - Typically the current US DST rules are used to interpret such values, |
| - but this means that the US DST rules are compiled into each program |
| - that does time conversion. This means that when US time conversion |
| - rules change (as in the United States in 1987), all programs that |
| - do time conversion must be recompiled to ensure proper results. |
| - |
| -* The TZ environment variable is process-global, which makes it hard |
| - to write efficient, thread-safe applications that need access |
| - to multiple time zones. |
| - |
| -* In POSIX, there's no tamper-proof way for a process to learn the |
| - system's best idea of local wall clock. (This is important for |
| - applications that an administrator wants used only at certain times - |
| - without regard to whether the user has fiddled the "TZ" environment |
| - variable. While an administrator can "do everything in UTC" to get |
| - around the problem, doing so is inconvenient and precludes handling |
| - daylight saving time shifts - as might be required to limit phone |
| - calls to off-peak hours.) |
| - |
| -* POSIX provides no convenient and efficient way to determine the UT |
| - offset and time zone abbreviation of arbitrary time stamps, |
| - particularly for time zone settings that do not fit into the |
| - POSIX model. |
| - |
| -* POSIX requires that systems ignore leap seconds. |
| - |
| -* The tz code attempts to support all the time_t implementations |
| - allowed by POSIX. The time_t type represents a nonnegative count of |
| - seconds since 1970-01-01 00:00:00 UTC, ignoring leap seconds. |
| - In practice, time_t is usually a signed 64- or 32-bit integer; 32-bit |
| - signed time_t values stop working after 2038-01-19 03:14:07 UTC, so |
| - new implementations these days typically use a signed 64-bit integer. |
| - Unsigned 32-bit integers are used on one or two platforms, |
| - and 36-bit and 40-bit integers are also used occasionally. |
| - Although earlier POSIX versions allowed time_t to be a |
| - floating-point type, this was not supported by any practical |
| - systems, and POSIX.1-2013 and the tz code both require time_t |
| - to be an integer type. |
| - |
| -These are the extensions that have been made to the POSIX functions: |
| - |
| -* The "TZ" environment variable is used in generating the name of a file |
| - from which time zone information is read (or is interpreted a la |
| - POSIX); "TZ" is no longer constrained to be a three-letter time zone |
| - name followed by a number of hours and an optional three-letter |
| - daylight time zone name. The daylight saving time rules to be used |
| - for a particular time zone are encoded in the time zone file; |
| - the format of the file allows U.S., Australian, and other rules to be |
| - encoded, and allows for situations where more than two time zone |
| - abbreviations are used. |
| - |
| - It was recognized that allowing the "TZ" environment variable to |
| - take on values such as "America/New_York" might cause "old" programs |
| - (that expect "TZ" to have a certain form) to operate incorrectly; |
| - consideration was given to using some other environment variable |
| - (for example, "TIMEZONE") to hold the string used to generate the |
| - time zone information file name. In the end, however, it was decided |
| - to continue using "TZ": it is widely used for time zone purposes; |
| - separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance; |
| - and systems where "new" forms of "TZ" might cause problems can simply |
| - use TZ values such as "EST5EDT" which can be used both by |
| - "new" programs (a la POSIX) and "old" programs (as zone names and |
| - offsets). |
| - |
| -* The code supports platforms with a UT offset member in struct tm, |
| - e.g., tm_gmtoff. |
| - |
| -* The code supports platforms with a time zone abbreviation member in |
| - struct tm, e.g., tm_zone. |
| - |
| -* Since the "TZ" environment variable can now be used to control time |
| - conversion, the "daylight" and "timezone" variables are no longer |
| - needed. (These variables are defined and set by "tzset"; however, their |
| - values will not be used by "localtime.") |
| - |
| -* Functions tzalloc, tzfree, localtime_rz, and mktime_z for |
| - more-efficient thread-safe applications that need to use |
| - multiple time zones. The tzalloc and tzfree functions |
| - allocate and free objects of type timezone_t, and localtime_rz |
| - and mktime_z are like localtime_r and mktime with an extra |
| - timezone_t argument. The functions were inspired by NetBSD. |
| - |
| -* A function "tzsetwall" has been added to arrange for the system's |
| - best approximation to local wall clock time to be delivered by |
| - subsequent calls to "localtime." Source code for portable |
| - applications that "must" run on local wall clock time should call |
| - "tzsetwall();" if such code is moved to "old" systems that don't |
| - provide tzsetwall, you won't be able to generate an executable program. |
| - (These time zone functions also arrange for local wall clock time to be |
| - used if tzset is called - directly or indirectly - and there's no "TZ" |
| - environment variable; portable applications should not, however, rely |
| - on this behavior since it's not the way SVR2 systems behave.) |
| - |
| -* Negative time_t values are supported, on systems where time_t is signed. |
| - |
| -* These functions can account for leap seconds, thanks to Bradley White. |
| - |
| -Points of interest to folks with other systems: |
| - |
| -* Code compatible with this package is already part of many platforms, |
| - including GNU/Linux, Android, the BSDs, Chromium OS, Cygwin, AIX, iOS, |
| - BlackBery 10, macOS, Microsoft Windows, OpenVMS, and Solaris. |
| - On such hosts, the primary use of this package |
| - is to update obsolete time zone rule tables. |
| - To do this, you may need to compile the time zone compiler |
| - 'zic' supplied with this package instead of using the system 'zic', |
| - since the format of zic's input is occasionally extended, |
| - and a platform may still be shipping an older zic. |
| - |
| -* The UNIX Version 7 "timezone" function is not present in this package; |
| - it's impossible to reliably map timezone's arguments (a "minutes west |
| - of GMT" value and a "daylight saving time in effect" flag) to a |
| - time zone abbreviation, and we refuse to guess. |
| - Programs that in the past used the timezone function may now examine |
| - tzname[localtime(&clock)->tm_isdst] to learn the correct time |
| - zone abbreviation to use. Alternatively, use |
| - localtime(&clock)->tm_zone if this has been enabled. |
| - |
| -* The 4.2BSD gettimeofday function is not used in this package. |
| - This formerly let users obtain the current UTC offset and DST flag, |
| - but this functionality was removed in later versions of BSD. |
| - |
| -* In SVR2, time conversion fails for near-minimum or near-maximum |
| - time_t values when doing conversions for places that don't use UT. |
| - This package takes care to do these conversions correctly. |
| - A comment in the source code tells how to get compatibly wrong |
| - results. |
| - |
| -The functions that are conditionally compiled if STD_INSPIRED is defined |
| -should, at this point, be looked on primarily as food for thought. They are |
| -not in any sense "standard compatible" - some are not, in fact, specified in |
| -*any* standard. They do, however, represent responses of various authors to |
| -standardization proposals. |
| - |
| -Other time conversion proposals, in particular the one developed by folks at |
| -Hewlett Packard, offer a wider selection of functions that provide capabilities |
| -beyond those provided here. The absence of such functions from this package |
| -is not meant to discourage the development, standardization, or use of such |
| -functions. Rather, their absence reflects the decision to make this package |
| -contain valid extensions to POSIX, to ensure its broad acceptability. If |
| -more powerful time conversion functions can be standardized, so much the |
| -better. |
| - |
| - |
| ------ Interface stability ----- |
| - |
| -The tz code and data supply the following interfaces: |
| - |
| - * A set of zone names as per "Names of time zone rules" above. |
| - |
| - * Library functions described in "Time and date functions" above. |
| - |
| - * The programs tzselect, zdump, and zic, documented in their man pages. |
| - |
| - * The format of zic input files, documented in the zic man page. |
| - |
| - * The format of zic output files, documented in the tzfile man page. |
| - |
| - * The format of zone table files, documented in zone1970.tab. |
| - |
| - * The format of the country code file, documented in iso3166.tab. |
| - |
| -When these interfaces are changed, an effort is made to preserve |
| -backward compatibility. For example, tz data files typically do not |
| -rely on recently-added zic features, so that users can run older zic |
| -versions to process newer data files. |
| - |
| -Interfaces not listed above are less stable. For example, users |
| -should not rely on particular UT offsets or abbreviations for time |
| -stamps, as data entries are often based on guesswork and these guesses |
| -may be corrected or improved. |
| - |
| - |
| ------ Calendrical issues ----- |
| - |
| -Calendrical issues are a bit out of scope for a time zone database, |
| -but they indicate the sort of problems that we would run into if we |
| -extended the time zone database further into the past. An excellent |
| -resource in this area is Nachum Dershowitz and Edward M. Reingold, |
| -Calendrical Calculations: Third Edition, Cambridge University Press (2008) |
| -<http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/>. |
| -Other information and sources are given below. They sometimes disagree. |
| - |
| - |
| -France |
| - |
| -Gregorian calendar adopted 1582-12-20. |
| -French Revolutionary calendar used 1793-11-24 through 1805-12-31, |
| -and (in Paris only) 1871-05-06 through 1871-05-23. |
| - |
| - |
| -Russia |
| - |
| -From Chris Carrier (1996-12-02): |
| -On 1929-10-01 the Soviet Union instituted an "Eternal Calendar" |
| -with 30-day months plus 5 holidays, with a 5-day week. |
| -On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the |
| -Gregorian calendar while retaining the 6-day week; on 1940-06-27 it |
| -reverted to the 7-day week. With the 6-day week the usual days |
| -off were the 6th, 12th, 18th, 24th and 30th of the month. |
| -(Source: Evitiar Zerubavel, _The Seven Day Circle_) |
| - |
| - |
| -Mark Brader reported a similar story in "The Book of Calendars", edited |
| -by Frank Parise (1982, Facts on File, ISBN 0-8719-6467-8), page 377. But: |
| - |
| -From: Petteri Sulonen (via Usenet) |
| -Date: 14 Jan 1999 00:00:00 GMT |
| -... |
| - |
| -If your source is correct, how come documents between 1929 and 1940 were |
| -still dated using the conventional, Gregorian calendar? |
| - |
| -I can post a scan of a document dated December 1, 1934, signed by |
| -Yenukidze, the secretary, on behalf of Kalinin, the President of the |
| -Executive Committee of the Supreme Soviet, if you like. |
| - |
| - |
| - |
| -Sweden (and Finland) |
| - |
| -From: Mark Brader |
| -Subject: Re: Gregorian reform - a part of locale? |
| -<news:1996Jul6.012937.29190@sq.com> |
| -Date: 1996-07-06 |
| - |
| -In 1700, Denmark made the transition from Julian to Gregorian. Sweden |
| -decided to *start* a transition in 1700 as well, but rather than have one of |
| -those unsightly calendar gaps :-), they simply decreed that the next leap |
| -year after 1696 would be in 1744 - putting the whole country on a calendar |
| -different from both Julian and Gregorian for a period of 40 years. |
| - |
| -However, in 1704 something went wrong and the plan was not carried through; |
| -they did, after all, have a leap year that year. And one in 1708. In 1712 |
| -they gave it up and went back to Julian, putting 30 days in February that |
| -year!... |
| - |
| -Then in 1753, Sweden made the transition to Gregorian in the usual manner, |
| -getting there only 13 years behind the original schedule. |
| - |
| -(A previous posting of this story was challenged, and Swedish readers |
| -produced the following references to support it: "Tideräkning och historia" |
| -by Natanael Beckman (1924) and "Tid, en bok om tideräkning och |
| -kalenderväsen" by Lars-Olof Lodén (1968). |
| - |
| - |
| -Grotefend's data |
| - |
| -From: "Michael Palmer" [with one obvious typo fixed] |
| -Subject: Re: Gregorian Calendar (was Re: Another FHC related question |
| -Newsgroups: soc.genealogy.german |
| -Date: Tue, 9 Feb 1999 02:32:48 -800 |
| -... |
| - |
| -The following is a(n incomplete) listing, arranged chronologically, of |
| -European states, with the date they converted from the Julian to the |
| -Gregorian calendar: |
| - |
| -04/15 Oct 1582 - Italy (with exceptions), Spain, Portugal, Poland (Roman |
| - Catholics and Danzig only) |
| -09/20 Dec 1582 - France, Lorraine |
| - |
| -21 Dec 1582/ |
| - 01 Jan 1583 - Holland, Brabant, Flanders, Hennegau |
| -10/21 Feb 1583 - bishopric of Liege (Lüttich) |
| -13/24 Feb 1583 - bishopric of Augsburg |
| -04/15 Oct 1583 - electorate of Trier |
| -05/16 Oct 1583 - Bavaria, bishoprics of Freising, Eichstedt, Regensburg, |
| - Salzburg, Brixen |
| -13/24 Oct 1583 - Austrian Oberelsaß and Breisgau |
| -20/31 Oct 1583 - bishopric of Basel |
| -02/13 Nov 1583 - duchy of Jülich-Berg |
| -02/13 Nov 1583 - electorate and city of Köln |
| -04/15 Nov 1583 - bishopric of Würzburg |
| -11/22 Nov 1583 - electorate of Mainz |
| -16/27 Nov 1583 - bishopric of Strassburg and the margraviate of Baden |
| -17/28 Nov 1583 - bishopric of Münster and duchy of Cleve |
| -14/25 Dec 1583 - Steiermark |
| - |
| -06/17 Jan 1584 - Austria and Bohemia |
| -11/22 Jan 1584 - Lucerne, Uri, Schwyz, Zug, Freiburg, Solothurn |
| -12/23 Jan 1584 - Silesia and the Lausitz |
| -22 Jan/ |
| - 02 Feb 1584 - Hungary (legally on 21 Oct 1587) |
| - Jun 1584 - Unterwalden |
| -01/12 Jul 1584 - duchy of Westfalen |
| - |
| -16/27 Jun 1585 - bishopric of Paderborn |
| - |
| -14/25 Dec 1590 - Transylvania |
| - |
| -22 Aug/ |
| - 02 Sep 1612 - duchy of Prussia |
| - |
| -13/24 Dec 1614 - Pfalz-Neuburg |
| - |
| - 1617 - duchy of Kurland (reverted to the Julian calendar in |
| - 1796) |
| - |
| - 1624 - bishopric of Osnabrück |
| - |
| - 1630 - bishopric of Minden |
| - |
| -15/26 Mar 1631 - bishopric of Hildesheim |
| - |
| - 1655 - Kanton Wallis |
| - |
| -05/16 Feb 1682 - city of Strassburg |
| - |
| -18 Feb/ |
| - 01 Mar 1700 - Protestant Germany (including Swedish possessions in |
| - Germany), Denmark, Norway |
| -30 Jun/ |
| - 12 Jul 1700 - Gelderland, Zutphen |
| -10 Nov/ |
| - 12 Dec 1700 - Utrecht, Overijssel |
| - |
| -31 Dec 1700/ |
| - 12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva, |
| - Turgau, and Schaffhausen |
| - |
| - 1724 - Glarus, Appenzell, and the city of St. Gallen |
| - |
| -01 Jan 1750 - Pisa and Florence |
| - |
| -02/14 Sep 1752 - Great Britain |
| - |
| -17 Feb/ |
| - 01 Mar 1753 - Sweden |
| - |
| -1760-1812 - Graubünden |
| - |
| -The Russian empire (including Finland and the Baltic states) did not |
| -convert to the Gregorian calendar until the Soviet revolution of 1917. |
| - |
| -Source: H. Grotefend, _Taschenbuch der Zeitrechnung des deutschen |
| -Mittelalters und der Neuzeit_, herausgegeben von Dr. O. Grotefend |
| -(Hannover: Hahnsche Buchhandlung, 1941), pp. 26-28. |
| - |
| - |
| ------ Time and time zones on Mars ----- |
| - |
| -Some people's work schedules use Mars time. Jet Propulsion Laboratory |
| -(JPL) coordinators have kept Mars time on and off at least since 1997 |
| -for the Mars Pathfinder mission. Some of their family members have |
| -also adapted to Mars time. Dozens of special Mars watches were built |
| -for JPL workers who kept Mars time during the Mars Exploration |
| -Rovers mission (2004). These timepieces look like normal Seikos and |
| -Citizens but use Mars seconds rather than terrestrial seconds. |
| - |
| -A Mars solar day is called a "sol" and has a mean period equal to |
| -about 24 hours 39 minutes 35.244 seconds in terrestrial time. It is |
| -divided into a conventional 24-hour clock, so each Mars second equals |
| -about 1.02749125 terrestrial seconds. |
| - |
| -The prime meridian of Mars goes through the center of the crater |
| -Airy-0, named in honor of the British astronomer who built the |
| -Greenwich telescope that defines Earth's prime meridian. Mean solar |
| -time on the Mars prime meridian is called Mars Coordinated Time (MTC). |
| - |
| -Each landed mission on Mars has adopted a different reference for |
| -solar time keeping, so there is no real standard for Mars time zones. |
| -For example, the Mars Exploration Rover project (2004) defined two |
| -time zones "Local Solar Time A" and "Local Solar Time B" for its two |
| -missions, each zone designed so that its time equals local true solar |
| -time at approximately the middle of the nominal mission. Such a "time |
| -zone" is not particularly suited for any application other than the |
| -mission itself. |
| - |
| -Many calendars have been proposed for Mars, but none have achieved |
| -wide acceptance. Astronomers often use Mars Sol Date (MSD) which is a |
| -sequential count of Mars solar days elapsed since about 1873-12-29 |
| -12:00 GMT. |
| - |
| -The tz database does not currently support Mars time, but it is |
| -documented here in the hopes that support will be added eventually. |
| - |
| -Sources: |
| - |
| -Michael Allison and Robert Schmunk, |
| -"Technical Notes on Mars Solar Time as Adopted by the Mars24 Sunclock" |
| -<http://www.giss.nasa.gov/tools/mars24/help/notes.html> (2012-08-08). |
| - |
| -Jia-Rui Chong, "Workdays Fit for a Martian", Los Angeles Times |
| -<http://articles.latimes.com/2004/jan/14/science/sci-marstime14> |
| -(2004-01-14), pp A1, A20-A21. |
| - |
| -Tom Chmielewski, "Jet Lag Is Worse on Mars", The Atlantic (2015-02-26) |
| -<http://www.theatlantic.com/technology/archive/2015/02/jet-lag-is-worse-on-mars/386033/> |
| - |
| ------ |
| - |
| -This file is in the public domain, so clarified as of 2009-05-17 by |
| -Arthur David Olson. |
| - |
| ------ |
| -Local Variables: |
| -coding: utf-8 |
| -End: |
| Index: UPDATING |
| =================================================================== |
| --- UPDATING (版本 324740) |
| +++ UPDATING (版本 325322) |
| @@ -16,6 +16,10 @@ |
| stable/10, and then rebuild without this option. The bootstrap process from |
| older version of current is a bit fragile. |
| |
| +20171102 p23 FreeBSD-EN-17:09.tzdata |
| + |
| + Update timezone database information. [EN-17:09] |
| + |
| 20171017 p22 FreeBSD-SA-17:07.wpa |
| |
| Fix WPA2 protocol vulnerability. [SA-17:07] |
| Index: contrib/tzdata/CONTRIBUTING |
| =================================================================== |
| --- contrib/tzdata/CONTRIBUTING (版本 324740) |
| +++ contrib/tzdata/CONTRIBUTING (版本 325322) |
| @@ -5,23 +5,29 @@ |
| warning, the data entries do not cover all of civil time before |
| 1970, and undoubtedly errors remain in the code and data. Feel |
| free to fill gaps or fix mistakes, and please email improvements |
| -to tz@iana.org for use in the future. |
| +to tz@iana.org for use in the future. In your email, please give |
| +reliable sources that reviewers can check. |
| |
| +----- |
| + |
| +Developers can contribute technical changes to the source code and |
| +data as follows. |
| + |
| To email small changes, please run a POSIX shell command like |
| 'diff -u old/europe new/europe >myfix.patch', and attach |
| myfix.patch to the email. |
| |
| -For more-elaborate changes, please read the Theory file and browse |
| -the mailing list archives <http://mm.icann.org/pipermail/tz/> for |
| -examples of patches that tend to work well. Ideally, additions to |
| +For more-elaborate changes, please read the theory.html file and browse |
| +the mailing list archives <https://mm.icann.org/pipermail/tz/> for |
| +examples of patches that tend to work well. Additions to |
| data should contain commentary citing reliable sources as |
| -justification. |
| +justification. Citations should use https: URLs if available. |
| |
| Please submit changes against either the latest release in |
| -<ftp://ftp.iana.org/tz/> or the master branch of the experimental |
| -Git repository. If you use Git the following workflow may be helpful: |
| +<https://www.iana.org/time-zones> or the master branch of the development |
| +repository. If you use Git the following workflow may be helpful: |
| |
| - * Copy the experimental repository. |
| + * Copy the development repository. |
| |
| git clone https://github.com/eggert/tz.git |
| cd tz |
| Index: contrib/tzdata/LICENSE |
| =================================================================== |
| --- contrib/tzdata/LICENSE (版本 324740) |
| +++ contrib/tzdata/LICENSE (版本 325322) |
| @@ -1,4 +1,5 @@ |
| -With a few exceptions, all files in the tz code and data (including |
| -this one) are in the public domain. The exceptions are date.c, |
| -newstrftime.3, and strftime.c, which contain material derived from BSD |
| -and which use the BSD 3-clause license. |
| +Unless specified below, all files in the tz code and data (including |
| +this LICENSE file) are in the public domain. |
| + |
| +If the files date.c, newstrftime.3, and strftime.c are present, they |
| +contain material derived from BSD and use the BSD 3-clause license. |
| Index: contrib/tzdata/Makefile |
| =================================================================== |
| --- contrib/tzdata/Makefile (版本 324740) |
| +++ contrib/tzdata/Makefile (版本 325322) |
| @@ -49,6 +49,7 @@ |
| # "Compiled" time zone information is placed in the "TZDIR" directory |
| # (and subdirectories). |
| # Use an absolute path name for TZDIR unless you're just testing the software. |
| +# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty. |
| |
| TZDIR_BASENAME= zoneinfo |
| TZDIR= $(TOPDIR)/etc/$(TZDIR_BASENAME) |
| @@ -72,11 +73,11 @@ |
| |
| LIBDIR= $(TOPDIR)/lib |
| |
| -# If you always want time values interpreted as "seconds since the epoch |
| -# (not counting leap seconds)", use |
| +# If you want only POSIX time, with time values interpreted as |
| +# seconds since the epoch (not counting leap seconds), use |
| # REDO= posix_only |
| -# below. If you always want right time values interpreted as "seconds since |
| -# the epoch" (counting leap seconds)", use |
| +# below. If you want only "right" time, with values interpreted |
| +# as seconds since the epoch (counting leap seconds), use |
| # REDO= right_only |
| # below. If you want both sets of data available, with leap seconds not |
| # counted normally, use |
| @@ -85,10 +86,31 @@ |
| # normally, use |
| # REDO= right_posix |
| # below. POSIX mandates that leap seconds not be counted; for compatibility |
| -# with it, use "posix_only" or "posix_right". |
| +# with it, use "posix_only" or "posix_right". Use POSIX time on systems with |
| +# leap smearing; this can work better than unsmeared "right" time with |
| +# applications that are not leap second aware, and is closer to unsmeared |
| +# "right" time than unsmeared POSIX time is (e.g., 0.5 vs 1.0 s max error). |
| |
| REDO= posix_right |
| |
| +# To install data in text form that has all the information of the binary data, |
| +# (optionally incorporating leap second information), use |
| +# TZDATA_TEXT= tzdata.zi leapseconds |
| +# To install text data without leap second information (e.g., because |
| +# REDO='posix_only'), use |
| +# TZDATA_TEXT= tzdata.zi |
| +# To avoid installing text data, use |
| +# TZDATA_TEXT= |
| + |
| +TZDATA_TEXT= leapseconds tzdata.zi |
| + |
| +# For backward-compatibility links for old zone names, use |
| +# BACKWARD= backward pacificnew |
| +# To omit these links, use |
| +# BACKWARD= |
| + |
| +BACKWARD= backward pacificnew |
| + |
| # If you want out-of-scope and often-wrong data from the file 'backzone', use |
| # PACKRATDATA= backzone |
| # To omit this data, use |
| @@ -96,6 +118,11 @@ |
| |
| PACKRATDATA= |
| |
| +# The name of a locale using the UTF-8 encoding, used during self-tests. |
| +# The tests are skipped if the name does not appear to work on this system. |
| + |
| +UTF8_LOCALE= en_US.utf8 |
| + |
| # Since "." may not be in PATH... |
| |
| YEARISTYPE= ./yearistype |
| @@ -103,50 +130,53 @@ |
| # Non-default libraries needed to link. |
| LDLIBS= |
| |
| -# Add the following to the end of the "CFLAGS=" line as needed. |
| +# Add the following to the end of the "CFLAGS=" line as needed to override |
| +# defaults specified in the source code. "-DFOO" is equivalent to "-DFOO=1". |
| # -DBIG_BANG=-9999999LL if the Big Bang occurred at time -9999999 (see zic.c) |
| +# -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime |
| +# formats that generate only the last two digits of year numbers |
| +# -DEPOCH_LOCAL if the 'time' function returns local time not UT |
| +# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater |
| +# than what POSIX specifies, assuming local time is UT. |
| +# For example, N is 252460800 on AmigaOS. |
| # -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r |
| +# -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ' |
| # -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows) |
| -# -DHAVE_DOS_FILE_NAMES if file names have drive specifiers etc. (MS-DOS) |
| -# -DHAVE_GETTEXT=1 if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris) |
| -# -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares |
| +# -DHAVE_GENERIC=0 if _Generic does not work |
| +# -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris) |
| +# -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares |
| # ctime_r and asctime_r incompatibly with the POSIX standard |
| # (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined). |
| -# -DHAVE_INTTYPES_H=1 if you have a pre-C99 compiler with "inttypes.h" |
| +# -DHAVE_INTTYPES_H if you have a non-C99 compiler with <inttypes.h> |
| # -DHAVE_LINK=0 if your system lacks a link function |
| # -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function |
| # -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz |
| -# This defaults to 1 if a working localtime_rz seems to be available. |
| # localtime_rz can make zdump significantly faster, but is nonstandard. |
| # -DHAVE_POSIX_DECLS=0 if your system's include files do not declare |
| # functions like 'link' or variables like 'tzname' required by POSIX |
| -# -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h" |
| -# -DHAVE_STRFTIME_L=1 if <time.h> declares locale_t and strftime_l |
| -# This defaults to 0 if _POSIX_VERSION < 200809, 1 otherwise. |
| +# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function |
| +# -DHAVE_STDBOOL_H if you have a non-C99 compiler with <stdbool.h> |
| +# -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h> |
| +# -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l |
| # -DHAVE_STRDUP=0 if your system lacks the strdup function |
| # -DHAVE_SYMLINK=0 if your system lacks the symlink function |
| -# -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h" |
| -# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h" |
| +# -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h> |
| +# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a <sys/wait.h> |
| # -DHAVE_TZSET=0 if your system lacks a tzset function |
| -# -DHAVE_UNISTD_H=0 if your compiler lacks a "unistd.h" (Microsoft C++ 7?) |
| -# -DEPOCH_LOCAL=1 if the 'time' function returns local time not UT |
| -# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater |
| -# than what POSIX specifies, assuming local time is UT. |
| -# For example, N is 252460800 on AmigaOS. |
| -# -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU=1 |
| -# if you do not want run time warnings about formats that may cause |
| -# year 2000 grief |
| -# -Dssize_t=long on ancient hosts that lack ssize_t |
| -# -DTHREAD_SAFE=1 to make localtime.c thread-safe, as POSIX requires; |
| +# -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h> |
| +# -Dlocale_t=XXX if your system uses XXX instead of locale_t |
| +# -Dssize_t=long on hosts like MS-Windows that lack ssize_t |
| +# -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires; |
| # not needed by the main-program tz code, which is single-threaded. |
| # Append other compiler flags as needed, e.g., -pthread on GNU/Linux. |
| # -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t |
| +# This is intended for internal use only; it mangles external names. |
| # -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz" |
| # -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory; |
| # the default is system-supplied, typically "/usr/lib/locale" |
| # -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified |
| # DST transitions if the time zone files cannot be accessed |
| -# -DUNINIT_TRAP=1 if reading uninitialized storage can cause problems |
| +# -DUNINIT_TRAP if reading uninitialized storage can cause problems |
| # other than simply getting garbage data |
| # -DUSE_LTZ=0 to build zdump with the system time zone library |
| # Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below. |
| @@ -154,27 +184,28 @@ |
| # (or some other number) to set the maximum time zone abbreviation length |
| # that zic will accept without a warning (the default is 6) |
| # $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking |
| -GCC_DEBUG_FLAGS = -Dlint -g3 -O3 -fno-common -fstrict-aliasing \ |
| - -Wall -Wextra \ |
| - -Wbad-function-cast -Wcast-align -Wdate-time \ |
| - -Wdeclaration-after-statement \ |
| - -Wdouble-promotion \ |
| - -Wformat=2 -Winit-self -Wjump-misses-init \ |
| - -Wlogical-op -Wmissing-prototypes -Wnested-externs \ |
| - -Wold-style-definition -Woverlength-strings -Wpointer-arith \ |
| - -Wshadow -Wstrict-prototypes -Wsuggest-attribute=const \ |
| - -Wsuggest-attribute=format -Wsuggest-attribute=noreturn \ |
| - -Wsuggest-attribute=pure -Wtrampolines \ |
| - -Wunused -Wwrite-strings \ |
| - -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ |
| - -Wno-type-limits -Wno-unused-parameter |
| +# Select instrumentation via "make GCC_INSTRUMENT='whatever'". |
| +GCC_INSTRUMENT = \ |
| + -fsanitize=undefined -fsanitize-address-use-after-scope \ |
| + -fsanitize-undefined-trap-on-error -fstack-protector |
| +GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ |
| + $(GCC_INSTRUMENT) \ |
| + -Wall -Wextra \ |
| + -Walloc-size-larger-than=100000 -Warray-bounds=2 \ |
| + -Wbad-function-cast -Wcast-align -Wdate-time \ |
| + -Wdeclaration-after-statement -Wdouble-promotion \ |
| + -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ |
| + -Winit-self -Wjump-misses-init -Wlogical-op \ |
| + -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ |
| + -Wold-style-definition -Woverlength-strings -Wpointer-arith \ |
| + -Wshadow -Wshift-overflow=2 -Wstrict-prototypes -Wstringop-overflow=5 \ |
| + -Wsuggest-attribute=const -Wsuggest-attribute=format \ |
| + -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ |
| + -Wtrampolines -Wundef -Wuninitialized -Wunused \ |
| + -Wvariadic-macros -Wvla -Wwrite-strings \ |
| + -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ |
| + -Wno-type-limits -Wno-unused-parameter |
| # |
| -# If you want to use System V compatibility code, add |
| -# -DUSG_COMPAT |
| -# to the end of the "CFLAGS=" line. This arrange for "timezone" and "daylight" |
| -# variables to be kept up-to-date by the time conversion functions. Neither |
| -# "timezone" nor "daylight" is described in X3J11's work. |
| -# |
| # If your system has a "GMT offset" field in its "struct tm"s |
| # (or if you decide to add such a field in your system's "time.h" file), |
| # add the name to a define such as |
| @@ -186,6 +217,31 @@ |
| # and define NO_TM_ZONE to suppress any guessing. These two fields are not |
| # required by POSIX, but are widely available on GNU/Linux and BSD systems. |
| # |
| +# The next batch of options control support for external variables |
| +# exported by tzcode. In practice these variables are less useful |
| +# than TM_GMTOFF and TM_ZONE. However, most of them are standardized. |
| +# # |
| +# # To omit or support the external variable "tzname", add one of: |
| +# # -DHAVE_TZNAME=0 |
| +# # -DHAVE_TZNAME=1 |
| +# # to the "CFLAGS=" line. "tzname" is required by POSIX 1988 and later. |
| +# # If not defined, the code attempts to guess HAVE_TZNAME from other macros. |
| +# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause |
| +# # crashes when combined with some platforms' standard libraries, |
| +# # presumably due to memory allocation issues. |
| +# # |
| +# # To omit or support the external variables "timezone" and "daylight", add |
| +# # -DUSG_COMPAT=0 |
| +# # -DUSG_COMPAT=1 |
| +# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by |
| +# # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later. |
| +# # If not defined, the code attempts to guess USG_COMPAT from other macros. |
| +# # |
| +# # To support the external variable "altzone", add |
| +# # -DALTZONE |
| +# # to the end of the "CFLAGS=" line; although "altzone" appeared in |
| +# # System V Release 3.1 it has not been standardized. |
| +# |
| # If you want functions that were inspired by early versions of X3J11's work, |
| # add |
| # -DSTD_INSPIRED |
| @@ -223,11 +279,6 @@ |
| # -DALL_STATE |
| # to the end of the "CFLAGS=" line. Storage is obtained by calling malloc. |
| # |
| -# If you want an "altzone" variable (a la System V Release 3.1), add |
| -# -DALTZONE |
| -# to the end of the "CFLAGS=" line. |
| -# This variable is not described in X3J11's work. |
| -# |
| # NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put |
| # out by the National Institute of Standards and Technology |
| # which claims to test C and Posix conformance. If you want to pass PCTS, add |
| @@ -237,8 +288,8 @@ |
| # If you want strict compliance with XPG4 as of 1994-04-09, add |
| # -DXPG4_1994_04_09 |
| # to the end of the "CFLAGS=" line. This causes "strftime" to always return |
| -# 53 as a week number (rather than 52 or 53) for those days in January that |
| -# before the first Monday in January when a "%V" format is used and January 1 |
| +# 53 as a week number (rather than 52 or 53) for January days before |
| +# January's first Monday when a "%V" format is used and January 1 |
| # falls on a Friday, Saturday, or Sunday. |
| |
| CFLAGS= |
| @@ -262,7 +313,7 @@ |
| |
| # How to use zic to install tz binary files. |
| |
| -ZIC_INSTALL= $(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR) $(LEAPSECONDS) |
| +ZIC_INSTALL= $(ZIC) -d $(DESTDIR)$(TZDIR) $(LEAPSECONDS) |
| |
| # The name of a Posix-compliant 'awk' on your system. |
| AWK= awk |
| @@ -286,6 +337,7 @@ |
| # The name, arguments and environment of a program to validate your web pages. |
| # See <http://openjade.sourceforge.net/doc/> for a validator, and |
| # <https://validator.w3.org/source/> for a validation library. |
| +# Set VALIDATE=':' if you do not have such a program. |
| VALIDATE = nsgmls |
| VALIDATE_FLAGS = -s -B -wall -wno-unused-param |
| VALIDATE_ENV = \ |
| @@ -352,7 +404,7 @@ |
| RANLIB= : |
| |
| TZCOBJS= zic.o |
| -TZDOBJS= zdump.o localtime.o asctime.o |
| +TZDOBJS= zdump.o localtime.o asctime.o strftime.o |
| DATEOBJS= date.o localtime.o strftime.o asctime.o |
| LIBSRCS= localtime.c asctime.c difftime.c |
| LIBOBJS= localtime.o asctime.o difftime.o |
| @@ -367,20 +419,22 @@ |
| time2posix.3.txt \ |
| tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \ |
| date.1.txt |
| -COMMON= CONTRIBUTING LICENSE Makefile NEWS README Theory version |
| +COMMON= calendars CONTRIBUTING LICENSE Makefile \ |
| + NEWS README theory.html version |
| WEB_PAGES= tz-art.htm tz-how-to.html tz-link.htm |
| DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES) |
| PRIMARY_YDATA= africa antarctica asia australasia \ |
| europe northamerica southamerica |
| -YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward |
| +YDATA= $(PRIMARY_YDATA) etcetera $(BACKWARD) |
| NDATA= systemv factory |
| TDATA= $(YDATA) $(NDATA) |
| ZONETABLES= zone1970.tab zone.tab |
| -TABDATA= iso3166.tab leapseconds $(ZONETABLES) |
| +TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) |
| LEAP_DEPS= leapseconds.awk leap-seconds.list |
| -DATA= $(YDATA) $(NDATA) backzone $(TABDATA) \ |
| - leap-seconds.list yearistype.sh |
| -AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk |
| +TZDATA_ZI_DEPS= zishrink.awk $(TDATA) $(PACKRATDATA) |
| +DATA= $(YDATA) $(NDATA) backzone iso3166.tab leap-seconds.list \ |
| + leapseconds yearistype.sh $(ZONETABLES) |
| +AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk zishrink.awk |
| MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl |
| TZS_YEAR= 2050 |
| TZS= to$(TZS_YEAR).tzs |
| @@ -387,13 +441,13 @@ |
| TZS_NEW= to$(TZS_YEAR)new.tzs |
| TZS_DEPS= $(PRIMARY_YDATA) asctime.c localtime.c \ |
| private.h tzfile.h zdump.c zic.c |
| -ENCHILADA= $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) $(TZS) |
| +ENCHILADA= $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) $(TZS) tzdata.zi |
| |
| # Consult these files when deciding whether to rebuild the 'version' file. |
| # This list is not the same as the output of 'git ls-files', since |
| # .gitignore is not distributed. |
| VERSION_DEPS= \ |
| - CONTRIBUTING LICENSE Makefile NEWS README Theory \ |
| + calendars CONTRIBUTING LICENSE Makefile NEWS README \ |
| africa antarctica asctime.c asia australasia \ |
| backward backzone \ |
| checklinks.awk checktab.awk \ |
| @@ -402,7 +456,7 @@ |
| leap-seconds.list leapseconds.awk localtime.c \ |
| newctime.3 newstrftime.3 newtzset.3 northamerica \ |
| pacificnew private.h \ |
| - southamerica strftime.c systemv \ |
| + southamerica strftime.c systemv theory.html \ |
| time2posix.3 tz-art.htm tz-how-to.html tz-link.htm \ |
| tzfile.5 tzfile.h tzselect.8 tzselect.ksh \ |
| workman.sh yearistype.sh \ |
| @@ -424,7 +478,7 @@ |
| $(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \ |
| $(DESTDIR)$(MANDIR)/man8 |
| $(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES) |
| - cp -f iso3166.tab $(ZONETABLES) $(DESTDIR)$(TZDIR)/. |
| + cp -f $(TABDATA) $(DESTDIR)$(TZDIR)/. |
| cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/. |
| cp libtz.a $(DESTDIR)$(LIBDIR)/. |
| $(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a |
| @@ -445,6 +499,11 @@ |
| printf '%s\n' "$$V" >$@.out |
| mv $@.out $@ |
| |
| +# This file can be tailored by setting BACKWARD, PACKRATDATA, etc. |
| +tzdata.zi: $(TZDATA_ZI_DEPS) |
| + LC_ALL=C $(AWK) -f zishrink.awk $(TDATA) $(PACKRATDATA) >$@.out |
| + mv $@.out $@ |
| + |
| version.h: version |
| VERSION=`cat version` && printf '%s\n' \ |
| 'static char const PKGVERSION[]="($(PACKAGE)) ";' \ |
| @@ -470,6 +529,7 @@ |
| # Arguments to pass to submakes of install_data. |
| # They can be overridden by later submake arguments. |
| INSTALLARGS = \ |
| + BACKWARD=$(BACKWARD) \ |
| DESTDIR=$(DESTDIR) \ |
| LEAPSECONDS='$(LEAPSECONDS)' \ |
| PACKRATDATA='$(PACKRATDATA)' \ |
| @@ -478,10 +538,8 @@ |
| ZIC='$(ZIC)' |
| |
| # 'make install_data' installs one set of tz binary files. |
| -# It can be tailored by setting LEAPSECONDS, PACKRATDATA, etc. |
| -install_data: zic leapseconds yearistype $(PACKRATDATA) $(TDATA) |
| - $(ZIC_INSTALL) $(TDATA) |
| - $(AWK) '/^Rule/' $(TDATA) | $(ZIC_INSTALL) - $(PACKRATDATA) |
| +install_data: zic leapseconds yearistype tzdata.zi |
| + $(ZIC_INSTALL) tzdata.zi |
| |
| posix_only: |
| $(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data |
| @@ -518,14 +576,14 @@ |
| |
| zones: $(REDO) |
| |
| -$(TZS_NEW): $(TDATA) zdump zic |
| +$(TZS_NEW): tzdata.zi zdump zic |
| mkdir -p tzs.dir |
| - $(zic) -d tzs.dir $(TDATA) |
| - $(AWK) '/^Link/{print $$1 "\t" $$2 "\t" $$3}' \ |
| - $(TDATA) | LC_ALL=C sort >$@.out |
| + $(zic) -d tzs.dir tzdata.zi |
| + $(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \ |
| + tzdata.zi | LC_ALL=C sort >$@.out |
| wd=`pwd` && \ |
| zones=`$(AWK) -v wd="$$wd" \ |
| - '/^Zone/{print wd "/tzs.dir/" $$2}' $(TDATA) \ |
| + '/^Z/{print wd "/tzs.dir/" $$2}' tzdata.zi \ |
| | LC_ALL=C sort` && \ |
| ./zdump -i -c $(TZS_YEAR) $$zones >>$@.out |
| sed 's,^TZ=".*tzs\.dir/,TZ=",' $@.out >$@.sed.out |
| @@ -542,7 +600,8 @@ |
| cp $(TZS_NEW) $(TZS) |
| |
| libtz.a: $(LIBOBJS) |
| - $(AR) ru $@ $(LIBOBJS) |
| + rm -f $@ |
| + $(AR) -rc $@ $(LIBOBJS) |
| $(RANLIB) $@ |
| |
| date: $(DATEOBJS) |
| @@ -560,18 +619,24 @@ |
| chmod +x $@.out |
| mv $@.out $@ |
| |
| -check: check_character_set check_white_space check_links check_sorted \ |
| - check_tables check_tzs check_web |
| +check: check_character_set check_white_space check_links \ |
| + check_name_lengths check_sorted \ |
| + check_tables check_web check_zishrink check_tzs |
| |
| check_character_set: $(ENCHILADA) |
| - LC_ALL=en_US.utf8 && export LC_ALL && \ |
| + test ! '$(UTF8_LOCALE)' || \ |
| + ! printf 'A\304\200B\n' | \ |
| + LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \ |
| + LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \ |
| sharp='#' && \ |
| ! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \ |
| $(MISC) $(SOURCES) $(WEB_PAGES) \ |
| - CONTRIBUTING LICENSE Makefile README version && \ |
| + CONTRIBUTING LICENSE Makefile README \ |
| + version tzdata.zi && \ |
| ! grep -Env $(SAFE_SHARP_LINE) $(TDATA) backzone \ |
| leapseconds yearistype.sh zone.tab && \ |
| - ! grep -Env $(OK_LINE) $(ENCHILADA) |
| + ! grep -Env $(OK_LINE) $(ENCHILADA); \ |
| + } |
| |
| check_white_space: $(ENCHILADA) |
| patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \ |
| @@ -578,6 +643,13 @@ |
| ! grep -En "$$pat" $(ENCHILADA) |
| ! grep -n '[[:space:]]$$' $(ENCHILADA) |
| |
| +PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+ |
| +FILE_NAME_COMPONENT_TOO_LONG = \ |
| + $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15} |
| + |
| +check_name_lengths: $(TDATA) backzone |
| + ! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' $(TDATA) backzone |
| + |
| CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; } |
| |
| check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab |
| @@ -592,6 +664,7 @@ |
| |
| check_links: checklinks.awk $(TDATA) |
| $(AWK) -f checklinks.awk $(TDATA) |
| + $(AWK) -f checklinks.awk tzdata.zi |
| |
| check_tables: checktab.awk $(PRIMARY_YDATA) $(ZONETABLES) |
| for tab in $(ZONETABLES); do \ |
| @@ -602,14 +675,32 @@ |
| check_tzs: $(TZS) $(TZS_NEW) |
| diff -u $(TZS) $(TZS_NEW) |
| |
| -check_web: $(WEB_PAGES) |
| - $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) $(WEB_PAGES) |
| +# This checks only the HTML 4.01 strict page. |
| +# To check the the other pages, use <https://validator.w3.org/>. |
| +check_web: tz-how-to.html |
| + $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html |
| |
| +# Check that tzdata.zi generates the same binary data that its sources do. |
| +check_zishrink: tzdata.zi zic leapseconds $(PACKRATDATA) $(TDATA) |
| + for type in posix right; do \ |
| + mkdir -p time_t.dir/$$type time_t.dir/$$type-shrunk && \ |
| + case $$type in \ |
| + right) leap='-L leapseconds';; \ |
| + *) leap=;; \ |
| + esac && \ |
| + $(ZIC) $$leap -d time_t.dir/$$type $(TDATA) && \ |
| + $(AWK) '/^Rule/' $(TDATA) | \ |
| + $(ZIC) $$leap -d time_t.dir/$$type - $(PACKRATDATA) && \ |
| + $(ZIC) $$leap -d time_t.dir/$$type-shrunk tzdata.zi && \ |
| + diff -r time_t.dir/$$type time_t.dir/$$type-shrunk || exit; \ |
| + done |
| + rm -fr time_t.dir |
| + |
| clean_misc: |
| rm -f core *.o *.out \ |
| date tzselect version.h zdump zic yearistype libtz.a |
| clean: clean_misc |
| - rm -fr *.dir tzdb-*/ $(TZS_NEW) |
| + rm -fr *.dir tzdata.zi tzdb-*/ $(TZS_NEW) |
| |
| maintainer-clean: clean |
| @echo 'This command is intended for maintainers to use; it' |
| @@ -663,6 +754,7 @@ |
| touch -cmr `ls -t $$file workman.sh | sed 1q` $$file.txt || \ |
| exit; \ |
| done |
| + touch -cmr `ls -t $(TZDATA_ZI_DEPS) | sed 1q` tzdata.zi |
| touch -cmr `ls -t $(TZS_DEPS) | sed 1q` $(TZS) |
| touch -cmr `ls -t $(VERSION_DEPS) | sed 1q` version |
| touch $@ |
| @@ -674,7 +766,7 @@ |
| $(MAKE) maintainer-clean |
| $(MAKE) "CFLAGS=$(GCC_DEBUG_FLAGS)" ALL |
| mkdir -p public.dir |
| - for i in $(TDATA) ; do \ |
| + for i in $(TDATA) tzdata.zi; do \ |
| $(zic) -v -d public.dir $$i 2>&1 || exit; \ |
| done |
| $(zic) -v -d public.dir $(TDATA) |
| @@ -768,8 +860,8 @@ |
| $(MAKE) clean ; \ |
| done |
| |
| -zonenames: $(TDATA) |
| - @$(AWK) '/^Zone/ { print $$2 } /^Link/ { print $$3 }' $(TDATA) |
| +zonenames: tzdata.zi |
| + @$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi |
| |
| asctime.o: private.h tzfile.h |
| date.o: private.h |
| @@ -785,6 +877,7 @@ |
| .PHONY: check check_character_set check_links |
| .PHONY: check_public check_sorted check_tables |
| .PHONY: check_time_t_alternatives check_tzs check_web check_white_space |
| +.PHONY: check_zishrink |
| .PHONY: clean clean_misc force_tzs |
| .PHONY: install install_data maintainer-clean names |
| .PHONY: posix_only posix_packrat posix_right |
| Index: sys/conf/newvers.sh |
| =================================================================== |
| --- sys/conf/newvers.sh (版本 324740) |
| +++ sys/conf/newvers.sh (版本 325322) |
| @@ -32,7 +32,7 @@ |
| |
| TYPE="FreeBSD" |
| REVISION="10.3" |
| -BRANCH="RELEASE-p22" |
| +BRANCH="RELEASE-p23" |
| if [ "X${BRANCH_OVERRIDE}" != "X" ]; then |
| BRANCH=${BRANCH_OVERRIDE} |
| fi |
| Index: contrib/tzdata/NEWS |
| =================================================================== |
| --- contrib/tzdata/NEWS (版本 324740) |
| +++ contrib/tzdata/NEWS (版本 325322) |
| @@ -1,5 +1,344 @@ |
| News for the tz database |
| |
| +Release 2017c - 2017-10-20 14:49:34 -0700 |
| + |
| + Briefly: |
| + Northern Cyprus switches from +03 to +02/+03 on 2017-10-29. |
| + Fiji ends DST 2018-01-14, not 2018-01-21. |
| + Namibia switches from +01/+02 to +02 on 2018-04-01. |
| + Sudan switches from +03 to +02 on 2017-11-01. |
| + Tonga likely switches from +13/+14 to +13 on 2017-11-05. |
| + Turks & Caicos switches from -04 to -05/-04 on 2018-11-04. |
| + A new file tzdata.zi now holds a small text copy of all data. |
| + The zic input format has been regularized slightly. |
| + |
| + Changes to future time stamps |
| + |
| + Northern Cyprus has decided to resume EU rules starting |
| + 2017-10-29, thus reinstituting winter time. |
| + |
| + Fiji ends DST 2018-01-14 instead of the 2018-01-21 previously |
| + predicted. (Thanks to Dominic Fok.) Adjust future predictions |
| + accordingly. |
| + |
| + Namibia will switch from +01 with DST to +02 all year on |
| + 2017-09-03 at 02:00. This affects UT offsets starting 2018-04-01 |
| + at 02:00. (Thanks to Steffen Thorsen.) |
| + |
| + Sudan will switch from +03 to +02 on 2017-11-01. (Thanks to Ahmed |
| + Atyya and Yahia Abdalla.) South Sudan is not switching, so |
| + Africa/Juba is no longer a link to Africa/Khartoum. |
| + |
| + Tonga has likely ended its experiment with DST, and will not |
| + adjust its clocks on 2017-11-05. Although Tonga has not announced |
| + whether it will continue to observe DST, the IATA is assuming that |
| + it will not. (Thanks to David Wade.) |
| + |
| + Turks & Caicos will switch from -04 all year to -05 with US DST on |
| + 2018-03-11 at 03:00. This affects UT offsets starting 2018-11-04 |
| + at 02:00. (Thanks to Steffen Thorsen.) |
| + |
| + Changes to past time stamps |
| + |
| + Namibia switched from +02 to +01 on 1994-03-21, not 1994-04-03. |
| + (Thanks to Arthur David Olson.) |
| + |
| + Detroit did not observe DST in 1967. |
| + |
| + Use railway time for Asia/Kolkata before 1941, by switching to |
| + Madras local time (UT +052110) in 1870, then to IST (UT +0530) in |
| + 1906. Also, treat 1941-2's +0630 as DST, like 1942-5. |
| + |
| + Europe/Dublin's 1946 and 1947 fallback transitions occurred at |
| + 02:00 standard time, not 02:00 DST. (Thanks to Michael Deckers.) |
| + |
| + Pacific/Apia and Pacific/Pago_Pago switched from Antipodean to |
| + American time in 1892, not 1879. (Thanks to Michael Deckers.) |
| + |
| + Adjust the 1867 transition in Alaska to better reflect the |
| + historical record, by changing it to occur on 1867-10-18 at 15:30 |
| + Sitka time rather than at the start of 1867-10-17 local time. |
| + Although strictly speaking this is accurate only for Sitka, |
| + the rest of Alaska's blanks need to be filled in somehow. |
| + |
| + Fix off-by-one errors in UT offsets for Adak and Nome before 1867. |
| + (Thanks to Michael Deckers.) |
| + |
| + Add 7 s to the UT offset in Asia/Yangon before 1920. |
| + |
| + Changes to zone names |
| + |
| + Remove Canada/East-Saskatchewan from the 'backward' file, as it |
| + exceeded the 14-character limit and was an unused misnomer anyway. |
| + |
| + Changes to build procedure |
| + |
| + To support applications that prefer to read time zone data in text |
| + form, two zic input files tzdata.zi and leapseconds are now |
| + installed by default. The commands 'zic tzdata.zi' and 'zic -L |
| + leapseconds tzdata.zi' can reproduce the tzdata binary files |
| + without and with leap seconds, respectively. To prevent these two |
| + new files from being installed, use 'make TZDATA_TEXT=', and to |
| + suppress leap seconds from the tzdata text installation, use 'make |
| + TZDATA_TEXT=tzdata.zi'. |
| + |
| + 'make BACKWARD=' now suppresses backward-compatibility names |
| + like 'US/Pacific' that are defined in the 'backward' and |
| + 'pacificnew' files. |
| + |
| + 'make check' now works on systems that lack a UTF-8 locale, |
| + or that lack the nsgmls program. Set UTF8_LOCALE to configure |
| + the name of a UTF-8 locale, if you have one. |
| + |
| + Y2K runtime checks are no longer enabled by default. Add |
| + -DDEPRECATE_TWO_DIGIT_YEARS to CFLAGS to enable them, instead of |
| + adding -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU |
| + to disable them. (New name suggested by Brian Inglis.) |
| + |
| + The build procedure for zdump now works on AIX 7.1. |
| + (Problem reported by Kees Dekker.) |
| + |
| + Changes to code |
| + |
| + zic and the reference runtime now reject multiple leap seconds |
| + within 28 days of each other, or leap seconds before the Epoch. |
| + As a result, support for double leap seconds, which was |
| + obsolescent and undocumented, has been removed. Double leap |
| + seconds were an error in the C89 standard; they have never existed |
| + in civil timekeeping. (Thanks to Robert Elz and Bradley White for |
| + noticing glitches in the code that uncovered this problem.) |
| + |
| + zic now warns about use of the obsolescent and undocumented -y |
| + option, and about use of the obsolescent TYPE field of Rule lines. |
| + |
| + zic now allows unambiguous abbreviations like "Sa" and "Su" for |
| + weekdays; formerly it rejected them due to a bug. Conversely, zic |
| + no longer considers non-prefixes to be abbreviations; for example, |
| + it no longer accepts "lF" as an abbreviation for "lastFriday". |
| + Also, zic warns about the undocumented usage with a "last-" |
| + prefix, e.g., "last-Fri". |
| + |
| + Similarly, zic now accepts the unambiguous abbreviation "L" for |
| + "Link" in ordinary context and for "Leap" in leap-second context. |
| + Conversely, zic no longer accepts non-prefixes such as "La" as |
| + abbreviations for words like "Leap". |
| + |
| + zic no longer accepts leap second lines in ordinary input, or |
| + ordinary lines in leap second input. Formerly, zic sometimes |
| + warned about this undocumented usage and handled it incorrectly. |
| + |
| + The new macro HAVE_TZNAME governs whether the tzname external |
| + variable is exported, instead of USG_COMPAT. USG_COMPAT now |
| + governs only the external variables "timezone" and "daylight". |
| + This change is needed because the three variables are not in the |
| + same category: although POSIX requires tzname, it specifies the |
| + other two variables as optional. Also, USG_COMPAT is now 1 or 0: |
| + if not defined, the code attempts to guess it from other macros. |
| + |
| + localtime.c and difftime.c no longer require stdio.h, and .c files |
| + other than zic.c no longer require sys/wait.h. |
| + |
| + zdump.c no longer assumes snprintf. (Reported by Jonathan Leffler.) |
| + |
| + Calculation of time_t extrema works around a bug in GCC 4.8.4 |
| + (Reported by Stan Shebs and Joseph Myers.) |
| + |
| + zic.c no longer mistranslates formats of line numbers in non-English |
| + locales. (Problem reported by Benno Schulenberg.) |
| + |
| + Several minor changes have been made to the code to make it a |
| + bit easier to port to MS-Windows and Solaris. (Thanks to Kees |
| + Dekker for reporting the problems.) |
| + |
| + Changes to documentation and commentary |
| + |
| + The two new files 'theory.html' and 'calendars' contain the |
| + contents of the removed file 'Theory'. The goal is to document |
| + tzdb theory more accessibly. |
| + |
| + The zic man page now documents abbreviation rules. |
| + |
| + tz-link.htm now covers how to apply tzdata changes to clients. |
| + (Thanks to Jorge Fábregas for the AIX link.) It also mentions MySQL. |
| + |
| + The leap-seconds.list URL has been updated to something that is |
| + more reliable for tzdb. (Thanks to Tim Parenti and Brian Inglis.) |
| + |
| +Release 2017b - 2017-03-17 07:30:38 -0700 |
| + |
| + Briefly: Haiti has resumed DST. |
| + |
| + Changes to past and future time stamps |
| + |
| + Haiti resumed observance of DST in 2017. (Thanks to Steffen Thorsen.) |
| + |
| + Changes to past time stamps |
| + |
| + Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01. |
| + |
| + Use "MMT" to abbreviate Liberia's time zone before 1972, as "-004430" |
| + is one byte over the POSIX limit. (Problem reported by Derick Rethans.) |
| + |
| + Changes to code |
| + |
| + The reference localtime implementation now falls back on the |
| + current US daylight-saving transition rules rather than the |
| + 1987-2006 rules. This fallback occurs only when (1) the TZ |
| + environment variable's value has a name like "AST4ADT" that asks |
| + for daylight saving time but does not specify the rules, (2) there |
| + is no file by that name, and (3) the TZDEFRULES file cannot be |
| + loaded. (Thanks to Tom Lane.) |
| + |
| + |
| +Release 2017a - 2017-02-28 00:05:36 -0800 |
| + |
| + Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia |
| + discontinues DST. |
| + |
| + Changes to future time stamps |
| + |
| + Mongolia no longer observes DST. (Thanks to Ganbold Tsagaankhuu.) |
| + |
| + Chile's Region of Magallanes moves from -04/-03 to -03 year-round. |
| + Its clocks diverge from America/Santiago starting 2017-05-13 at |
| + 23:00, hiving off a new zone America/Punta_Arenas. Although the |
| + Chilean government says this change expires in May 2019, for now |
| + assume it's permanent. (Thanks to Juan Correa and Deborah |
| + Goldsmith.) This also affects Antarctica/Palmer. |
| + |
| + Changes to past time stamps |
| + |
| + Fix many entries for historical time stamps for Europe/Madrid |
| + before 1979, to agree with tables compiled by Pere Planesas of the |
| + National Astronomical Observatory of Spain. As a side effect, |
| + this changes some time stamps for Africa/Ceuta before 1929, which |
| + are probably guesswork anyway. (Thanks to Steve Allen and |
| + Pierpaolo Bernardi for the heads-ups, and to Michael Deckers for |
| + correcting the 1901 transition.) |
| + |
| + Ecuador observed DST from 1992-11-28 to 1993-02-05. |
| + (Thanks to Alois Treindl.) |
| + |
| + Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21. |
| + (Thanks to Stepan Golosunov.) |
| + |
| + Changes to past and future time zone abbreviations |
| + |
| + Switch to numeric time zone abbreviations for South America, as |
| + part of the ongoing project of removing invented abbreviations. |
| + This avoids the need to invent an abbreviation for the new Chilean |
| + new zone. Similarly, switch from invented to numeric time zone |
| + abbreviations for Afghanistan, American Samoa, the Azores, |
| + Bangladesh, Bhutan, the British Indian Ocean Territory, Brunei, |
| + Cape Verde, Chatham Is, Christmas I, Cocos (Keeling) Is, Cook Is, |
| + Dubai, East Timor, Eucla, Fiji, French Polynesia, Greenland, |
| + Indochina, Iran, Iraq, Kiribati, Lord Howe, Macquarie, Malaysia, |
| + the Maldives, Marshall Is, Mauritius, Micronesia, Mongolia, |
| + Myanmar, Nauru, Nepal, New Caledonia, Niue, Norfolk I, Palau, |
| + Papua New Guinea, the Philippines, Pitcairn, Qatar, Réunion, St |
| + Pierre & Miquelon, Samoa, Saudi Arabia, Seychelles, Singapore, |
| + Solomon Is, Tokelau, Tuvalu, Wake, Vanuatu, Wallis & Futuna, and |
| + Xinjiang; for 20-minute daylight saving time in Ghana before 1943; |
| + for half-hour daylight saving time in Belize before 1944 and in |
| + the Dominican Republic before 1975; and for Canary Islands before |
| + 1946, for Guinea-Bissau before 1975, for Iceland before 1969, for |
| + Indian Summer Time before 1942, for Indonesia before around 1964, |
| + for Kenya before 1960, for Liberia before 1973, for Madeira before |
| + 1967, for Namibia before 1943, for the Netherlands in 1937-9, for |
| + Pakistan before 1971, for Western Sahara before 1977, and for |
| + Zaporozhye in 1880-1924. |
| + |
| + For Alaska time from 1900 through 1967, instead of "CAT" use the |
| + abbreviation "AST", the abbreviation commonly used at the time |
| + (Atlantic Standard Time had not been standardized yet). Use "AWT" |
| + and "APT" instead of the invented abbreviations "CAWT" and "CAPT". |
| + |
| + Use "CST" and "CDT" instead of invented abbreviations for Macau |
| + before 1999 and Taiwan before 1938, and use "JST" instead of the |
| + invented abbreviation "JCST" for Japan and Korea before 1938. |
| + |
| + Change to database entry category |
| + |
| + Move the Pacific/Johnston link from 'australasia' to 'backward', |
| + since Johnston is now uninhabited. |
| + |
| + Changes to code |
| + |
| + zic no longer mishandles some transitions in January 2038 when it |
| + attempts to work around Qt bug 53071. This fixes a bug affecting |
| + Pacific/Tongatapu that was introduced in zic 2016e. localtime.c |
| + now contains a workaround, useful when loading a file generated by |
| + a buggy zic. (Problem and localtime.c fix reported by Bradley |
| + White.) |
| + |
| + zdump -i now outputs non-hour numeric time zone abbreviations |
| + without a colon, e.g., "+0530" rather than "+05:30". This agrees |
| + with zic %z and with common practice, and simplifies auditing of |
| + zdump output. |
| + |
| + zdump is now buildable again with -DUSE_LTZ=0. |
| + (Problem reported by Joseph Myers.) |
| + |
| + zdump.c now always includes private.h, to avoid code duplication |
| + with private.h. (Problem reported by Kees Dekker.) |
| + |
| + localtime.c no longer mishandles early or late timestamps |
| + when TZ is set to a POSIX-style string that specifies DST. |
| + (Problem reported by Kees Dekker.) |
| + |
| + date and strftime now cause %z to generate "-0000" instead of |
| + "+0000" when the UT offset is zero and the time zone abbreviation |
| + begins with "-". |
| + |
| + Changes to documentation and commentary |
| + |
| + The 'Theory' file now better documents choice of historical time |
| + zone abbreviations. (Problems reported by Michael Deckers.) |
| + |
| + tz-link.htm now covers leap smearing, which is popular in clouds. |
| + |
| + |
| +Release 2016j - 2016-11-22 23:17:13 -0800 |
| + |
| + Briefly: Saratov, Russia moves from +03 to +04 on 2016-12-04. |
| + |
| + Changes to future time stamps |
| + |
| + Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00. |
| + This hives off a new zone Europe/Saratov from Europe/Volgograd. |
| + (Thanks to Yuri Konotopov and Stepan Golosunov.) |
| + |
| + Changes to past time stamps |
| + |
| + The new zone Asia/Atyrau for Atyraū Region, Kazakhstan, is like |
| + Asia/Aqtau except it switched from +05/+06 to +04/+05 in spring |
| + 1999, not fall 1994. (Thanks to Stepan Golosunov.) |
| + |
| + Changes to past time zone abbreviations |
| + |
| + Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote |
| + summer time before 1948. The old use of "EET" was a typo. |
| + |
| + Changes to code |
| + |
| + zic no longer mishandles file systems that lack hard links, fixing |
| + bugs introduced in 2016g. (Problems reported by Tom Lane.) |
| + Also, when the destination already contains symbolic links, zic |
| + should now work better on systems where the 'link' system call |
| + does not follow symbolic links. |
| + |
| + Changes to documentation and commentary |
| + |
| + tz-link.htm now documents the relationship between release version |
| + numbers and development-repository commit tags. (Suggested by |
| + Paul Koning.) |
| + |
| + The 'Theory' file now documents UT. |
| + |
| + iso3166.tab now accents "Curaçao", and commentary now mentions |
| + the names "Cabo Verde" and "Czechia". (Thanks to Jiří Boháč.) |
| + |
| + |
| Release 2016i - 2016-11-01 23:19:52 -0700 |
| |
| Briefly: Cyprus split into two time zones on 2016-10-30, and Tonga |
| @@ -212,7 +551,7 @@ |
| 23 commits and some working-file changes have been made since |
| release 2016g, the version number is now something like |
| '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. |
| - Official releases uses the same version number format as before, |
| + Tagged releases use the same version number format as before, |
| e.g., '2016g'. To support the more-accurate version number, its |
| specification has moved from a line in the Makefile to a new |
| source file 'version'. |
| @@ -870,9 +1209,9 @@ |
| been fixed. (Thanks to Christos Zoulas for reporting most of |
| these problems and for suggesting fixes.) |
| |
| - If USG_COMPAT is defined and the requested time stamp is standard time, |
| + If USG_COMPAT is defined and the requested timestamp is standard time, |
| the tz library's localtime and mktime functions now set the extern |
| - variable timezone to a value appropriate for that time stamp; and |
| + variable timezone to a value appropriate for that timestamp; and |
| similarly for ALTZONE, daylight saving time, and the altzone variable. |
| This change is a companion to the tzname change in 2014h, and is |
| designed to make timezone and altzone more compatible with tzname. |
| @@ -879,7 +1218,7 @@ |
| |
| The tz library's functions now set errno to EOVERFLOW if they fail |
| because the result cannot be represented. ctime and ctime_r now |
| - return NULL and set errno when a time stamp is out of range, rather |
| + return NULL and set errno when a timestamp is out of range, rather |
| than having undefined behavior. |
| |
| Some bugs associated with the new 2014g functions have been fixed. |
| @@ -896,7 +1235,7 @@ |
| |
| Release 2014h - 2014-09-25 18:59:03 -0700 |
| |
| - Changes affecting past time stamps |
| + Changes affecting past timestamps |
| |
| America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. |
| |
| @@ -904,8 +1243,8 @@ |
| not 1920-01-06. The old entry was based on a misinterpretation of Shanks. |
| |
| Some more zones have been turned into links, when they differed |
| - from existing zones only for older time stamps. As usual, |
| - these changes affect UTC offsets in pre-1970 time stamps only. |
| + from existing zones only for older timestamps. As usual, |
| + these changes affect UTC offsets in pre-1970 timestamps only. |
| Their old contents have been moved to the 'backzone' file. |
| The affected zones are: Africa/Blantyre, Africa/Bujumbura, |
| Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, |
| @@ -917,7 +1256,7 @@ |
| not merely on platforms defining TM_GMTOFF. |
| |
| The tz library's localtime and mktime functions now set tzname to a value |
| - appropriate for the requested time stamp, and zdump now uses this |
| + appropriate for the requested timestamp, and zdump now uses this |
| on platforms not defining TM_ZONE, fixing a 2014g regression. |
| (Thanks to Tim Parenti for reporting the problem.) |
| |
| @@ -957,13 +1296,13 @@ |
| |
| Release 2014g - 2014-08-28 12:31:23 -0700 |
| |
| - Changes affecting future time stamps |
| + Changes affecting future timestamps |
| |
| Turks & Caicos is switching from US eastern time to UT -04 |
| year-round, modeled as a switch on 2014-11-02 at 02:00. |
| [As noted in 2014j, this switch was later delayed.] |
| |
| - Changes affecting past time stamps |
| + Changes affecting past timestamps |
| |
| Time in Russia or the USSR before 1926 or so has been corrected by |
| a few seconds in the following zones: Asia/Irkutsk, |
| @@ -973,7 +1312,7 @@ |
| Vladimir Karpinsky.) |
| |
| The Portuguese decree of 1911-05-26 took effect on 1912-01-01. |
| - This affects 1911 time stamps in Africa/Bissau, Africa/Luanda, |
| + This affects 1911 timestamps in Africa/Bissau, Africa/Luanda, |
| Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 |
| GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. |
| (Thanks to Stephen Colebourne for pointing to the decree.) |
| @@ -981,7 +1320,7 @@ |
| Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. |
| |
| A new file 'backzone' contains data which may appeal to |
| - connoisseurs of old time stamps, although it is out of scope for |
| + connoisseurs of old timestamps, although it is out of scope for |
| the tz database, is often poorly sourced, and contains some data |
| that is known to be incorrect. The new file is not recommended |
| for ordinary use and its entries are not installed by default. |
| @@ -989,8 +1328,8 @@ |
| Isle of Man entries.) |
| |
| Some more zones have been turned into links, when they differed |
| - from existing zones only for older time stamps. As usual, |
| - these changes affect UTC offsets in pre-1970 time stamps only. |
| + from existing zones only for older timestamps. As usual, |
| + these changes affect UTC offsets in pre-1970 timestamps only. |
| Their old contents have been moved to the 'backzone' file. |
| The affected zones are: Africa/Bangui, Africa/Brazzaville, |
| Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, |
| @@ -1041,7 +1380,7 @@ |
| but does not cause other problems such as traps. |
| |
| If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now |
| - more likely to guess right for ambiguous time stamps near |
| + more likely to guess right for ambiguous timestamps near |
| transitions where tm_isdst does not change. |
| |
| If HAVE_STRFTIME_L is defined to 1, the tz library now defines |
| @@ -1114,7 +1453,7 @@ |
| |
| Release 2014f - 2014-08-05 17:42:36 -0700 |
| |
| - Changes affecting future time stamps |
| + Changes affecting future timestamps |
| |
| Russia will subtract an hour from most of its time zones on 2014-10-26 |
| at 02:00 local time. (Thanks to Alexander Krivenyshev.) |
| @@ -1165,13 +1504,13 @@ |
| These abbreviations are now used for time in Korea, Taiwan, |
| and Sakhalin while controlled by Japan. |
| |
| - Changes affecting past time stamps |
| + Changes affecting past timestamps |
| |
| China's five zones have been simplified to two, since the post-1970 |
| differences in the other three seem to have been imaginary. The |
| zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been |
| removed; backwards-compatibility links still work, albeit with |
| - different behaviors for time stamps before May 1980. Asia/Urumqi's |
| + different behaviors for timestamps before May 1980. Asia/Urumqi's |
| 1980 transition to UT +08 has been removed, so that it is now at |
| +06 and not +08. (Thanks to Luther Ma and to Alois Treindl; |
| Treindl sent helpful translations of two papers by Guo Qingsheng.) |
| @@ -1178,7 +1517,7 @@ |
| |
| Some zones have been turned into links, when they differed from existing |
| zones only for older UTC offsets where data entries were likely invented. |
| - These changes affect UTC offsets in pre-1970 time stamps only. This is |
| + These changes affect UTC offsets in pre-1970 timestamps only. This is |
| similar to the change in release 2013e, except this time for western |
| Africa. The affected zones are: Africa/Bamako, Africa/Banjul, |
| Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, |
| @@ -1323,7 +1662,7 @@ |
| |
| Release 2014e - 2014-06-12 21:53:52 -0700 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. |
| (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily |
| @@ -1335,7 +1674,7 @@ |
| temporarily switch to standard time at 03:00 the last Saturday before |
| Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. |
| |
| - Changes affecting past time stamps |
| + Changes affecting past timestamps |
| |
| The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of |
| "MSD" for Moscow's double daylight time in summer 1921. Also, a typo |
| @@ -1353,7 +1692,7 @@ |
| |
| Changes affecting code |
| |
| - zic no longer generates files containing time stamps before the Big Bang. |
| + zic no longer generates files containing timestamps before the Big Bang. |
| This works around GNOME bug 730332 |
| <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. |
| (Thanks to Leonardo Chiquitto for reporting the bug, and to |
| @@ -1366,7 +1705,7 @@ |
| |
| Release 2014c - 2014-05-13 07:44:13 -0700 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| Egypt observes DST starting 2014-05-15 at 24:00. |
| (Thanks to Ahmad El-Dardiry and Gunther Vermier.) |
| @@ -1380,7 +1719,7 @@ |
| Changes affecting code |
| |
| zic now generates transitions for minimum time values, eliminating guesswork |
| - when handling low-valued time stamps. (Thanks to Arthur David Olson.) |
| + when handling low-valued timestamps. (Thanks to Arthur David Olson.) |
| |
| Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) |
| |
| @@ -1391,7 +1730,7 @@ |
| |
| Release 2014b - 2014-03-24 21:28:50 -0700 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. |
| (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. |
| @@ -1430,12 +1769,12 @@ |
| |
| Release 2014a - 2014-03-07 23:30:29 -0800 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for |
| the heads-up, and to Tim Parenti for simplifying the update.) |
| |
| - Changes affecting past time stamps |
| + Changes affecting past timestamps |
| |
| Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. |
| (Thanks to Steffen Thorsen.) |
| @@ -1499,13 +1838,13 @@ |
| |
| Release 2013i - 2013-12-17 07:25:23 -0800 |
| |
| - Changes affecting near-future time stamps: |
| + Changes affecting near-future timestamps: |
| |
| Jordan switches back to standard time at 00:00 on December 20, 2013. |
| The 2006-2011 transition schedule is planned to resume in 2014. |
| (Thanks to Steffen Thorsen.) |
| |
| - Changes affecting past time stamps: |
| + Changes affecting past timestamps: |
| |
| In 2004, Cuba began DST on March 28, not April 4. |
| (Thanks to Steffen Thorsen.) |
| @@ -1529,7 +1868,7 @@ |
| |
| Release 2013h - 2013-10-25 15:32:32 -0700 |
| |
| - Changes affecting current and future time stamps: |
| + Changes affecting current and future timestamps: |
| |
| Libya has switched its UT offset back to +02 without DST, instead |
| of +01 with DST. (Thanks to Even Scharning.) |
| @@ -1537,7 +1876,7 @@ |
| Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. |
| (Thanks to Gwillim Law.) |
| |
| - Changes affecting future time stamps: |
| + Changes affecting future timestamps: |
| |
| Acre and (we guess) western Amazonas will switch from UT -04 to -05 |
| on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. |
| @@ -1588,7 +1927,7 @@ |
| |
| Release 2013g - 2013-09-30 21:08:26 -0700 |
| |
| - Changes affecting current and near-future time stamps |
| + Changes affecting current and near-future timestamps |
| |
| Morocco now observes DST from the last Sunday in March to the last |
| Sunday in October, not April to September respectively. (Thanks |
| @@ -1621,7 +1960,7 @@ |
| |
| Release 2013f - 2013-09-24 23:37:36 -0700 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| Tocantins will very likely not observe DST starting this spring. |
| (Thanks to Steffen Thorsen.) |
| @@ -1668,7 +2007,7 @@ |
| |
| Release 2013e - 2013-09-19 23:50:04 -0700 |
| |
| - Changes affecting near-future time stamps |
| + Changes affecting near-future timestamps |
| |
| This year Fiji will start DST on October 27, not October 20. |
| (Thanks to David Wheeler for the heads-up.) For now, guess that |
| @@ -1686,13 +2025,13 @@ |
| Use ART (UT -03, standard time), rather than WARST (also -03, but |
| daylight saving time) for San Luis, Argentina since 2009. |
| |
| - Changes affecting Godthåb time stamps after 2037 if version mismatch |
| + Changes affecting Godthåb timestamps after 2037 if version mismatch |
| |
| Allow POSIX-like TZ strings where the transition time's hour can |
| range from -167 through 167, instead of the POSIX-required 0 |
| through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the |
| new Fiji rules. This is a more-compact way to represent |
| - far-future time stamps for America/Godthab, America/Santiago, |
| + far-future timestamps for America/Godthab, America/Santiago, |
| Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, |
| Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by |
| this change. (Derived from a suggestion by Arthur David Olson.) |
| @@ -1710,12 +2049,12 @@ |
| embedded TZ-format string, and the tz file format version number |
| has therefore been increased from 2 to 3 as a precaution. |
| Version-2-based client code should continue to work as before for |
| - all time stamps before 2038. Existing version-2-based client code |
| + all timestamps before 2038. Existing version-2-based client code |
| (tzcode, GNU/Linux, Solaris) has been tested on version-3-format |
| - files, and typically works in practice even for time stamps after |
| + files, and typically works in practice even for timestamps after |
| 2037; the only known exception is America/Godthab. |
| |
| - Changes affecting time stamps before 1970 |
| + Changes affecting timestamps before 1970 |
| |
| Pacific/Johnston is now a link to Pacific/Honolulu. This corrects |
| some errors before 1947. |
| @@ -1723,7 +2062,7 @@ |
| Some zones have been turned into links, when they differ from existing |
| zones only in older data entries that were likely invented or that |
| differ only in LMT or transitions from LMT. These changes affect |
| - only time stamps before 1943. The affected zones are: |
| + only timestamps before 1943. The affected zones are: |
| Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, |
| America/Grenada, America/Guadeloupe, America/Marigot, |
| America/Montserrat, America/St_Barthelemy, America/St_Kitts, |
| @@ -1733,11 +2072,11 @@ |
| link is better for WWII-era times.) |
| |
| Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects |
| - America/Cayman, America/Jamaica and America/Grand_Turk time stamps |
| + America/Cayman, America/Jamaica and America/Grand_Turk timestamps |
| from 1890 to 1912. |
| |
| Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. |
| - This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks |
| + This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks |
| to Alois Treindl). |
| |
| Change the date of the circa-1850 Zurich transition from 1849-09-12 |
| @@ -1755,7 +2094,7 @@ |
| data can't be summarized using a TZ string, and uses a 402-year |
| window rather than a 400-year window. For the current data, this |
| affects only the Asia/Tehran file. It does not affect any of the |
| - time stamps that this file represents, so zdump outputs the same |
| + timestamps that this file represents, so zdump outputs the same |
| information as before. (Thanks to Andrew Main (Zefram).) |
| |
| The 'date' command has a new '-r' option, which lets you specify |
| @@ -1787,7 +2126,7 @@ |
| Changes affecting the zdump utility |
| |
| zdump now outputs "UT" when referring to Universal Time, not "UTC". |
| - "UTC" does not make sense for time stamps that predate the introduction |
| + "UTC" does not make sense for timestamps that predate the introduction |
| of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen |
| for clarifying UT vs UTC.) |
| |
| @@ -1798,7 +2137,7 @@ |
| |
| Remove from zone.tab the names America/Montreal, America/Shiprock, |
| and Antarctica/South_Pole, as they are equivalent to existing |
| - same-country-code zones for post-1970 time stamps. The data entries for |
| + same-country-code zones for post-1970 timestamps. The data entries for |
| these names are unchanged, so the names continue to work as before. |
| |
| Changes affecting code internals |
| @@ -1816,7 +2155,7 @@ |
| |
| The 'leapseconds' file is now generated automatically from a |
| new file 'leap-seconds.list', which is a copy of |
| - <ftp://time.nist.gov/pub/leap-seconds.list>. |
| + <ftp://ftp.nist.gov/pub/time/leap-seconds.list> |
| A new source file 'leapseconds.awk' implements this. |
| The goal is simplification of the future maintenance of 'leapseconds'. |
| |
| @@ -1858,7 +2197,7 @@ |
| |
| There is a new section about the accuracy of the tz database, |
| describing the many ways that errors can creep in, and |
| - explaining why so many of the pre-1970 time stamps are wrong or |
| + explaining why so many of the pre-1970 timestamps are wrong or |
| misleading (thanks to Steve Allen, Lester Caine, and Garrett |
| Wollman for discussions that contributed to this). |
| |
| @@ -1893,7 +2232,7 @@ |
| |
| Release 2013d - 2013-07-05 07:38:01 -0700 |
| |
| - Changes affecting future time stamps: |
| + Changes affecting future timestamps: |
| |
| Morocco's midsummer transitions this year are July 7 and August 10, |
| not July 9 and August 8. (Thanks to Andrew Paprocki.) |
| @@ -1901,7 +2240,7 @@ |
| Israel now falls back on the last Sunday of October. |
| (Thanks to Ephraim Silverberg.) |
| |
| - Changes affecting past time stamps: |
| + Changes affecting past timestamps: |
| |
| Specify Jerusalem's location more precisely; this changes the pre-1880 |
| times by 2 s. |
| @@ -1939,7 +2278,7 @@ |
| |
| Release 2013c - 2013-04-19 16:17:40 -0700 |
| |
| - Changes affecting current and future time stamps: |
| + Changes affecting current and future timestamps: |
| |
| Palestine observed DST starting March 29, 2013. (Thanks to |
| Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, |
| @@ -1950,7 +2289,7 @@ |
| by moving the end of DST to the 4th Sunday in March every year. |
| (Thanks to Carlos Raúl Perasso.) |
| |
| - Changes affecting past time stamps: |
| + Changes affecting past timestamps: |
| |
| Fix some historical data for Palestine to agree with that of |
| timeanddate.com, as follows: |
| @@ -1984,10 +2323,10 @@ |
| |
| Release 2013b - 2013-03-10 22:33:40 -0700 |
| |
| - Changes affecting current and future time stamps: |
| + Changes affecting current and future timestamps: |
| |
| Haiti uses US daylight-saving rules this year, and presumably future years. |
| - This changes time stamps starting today. (Thanks to Steffen Thorsen.) |
| + This changes timestamps starting today. (Thanks to Steffen Thorsen.) |
| |
| Paraguay will end DST on March 24 this year. |
| (Thanks to Steffen Thorsen.) For now, assume it's just this year. |
| @@ -2011,7 +2350,7 @@ |
| The zone offset at the end of version-2-format zone files is now |
| allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) |
| |
| - Changes affecting current and future time stamps: |
| + Changes affecting current and future timestamps: |
| |
| Chile's 2013 rules, and we guess rules for 2014 and later, will be |
| the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. |
| @@ -2020,9 +2359,9 @@ |
| New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. |
| (Thanks to Tobias Conradi and Arthur David Olson.) |
| |
| - Many changes affect historical time stamps before 1940. |
| + Many changes affect historical timestamps before 1940. |
| These were deduced from: Milne J. Civil time. Geogr J. 1899 |
| - Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>. |
| + Feb;13(2):173-94 <https://www.jstor.org/stable/1774359>. |
| |
| Changes affecting the code: |
| |
| @@ -2152,7 +2491,7 @@ |
| |
| Release code2012c-data2012d - 2012-07-19 16:35:33 -0700 |
| |
| - Changes for Morocco's time stamps, which take effect in a couple of |
| + Changes for Morocco's timestamps, which take effect in a couple of |
| hours, along with infrastructure changes to accommodate how the tz |
| code and data are released on IANA. |
| |
| @@ -2296,12 +2635,12 @@ |
| |
| Release 2011d - 2011-03-14 09:18:01 -0400 |
| |
| - changes that impact present-day time stamps in Cuba, Samoa, and Turkey |
| + changes that impact present-day timestamps in Cuba, Samoa, and Turkey |
| |
| |
| Release 2011c - 2011-03-07 09:30:09 -0500 |
| |
| - These do affect current time stamps in Chile and Annette Island, Canada. |
| + These do affect current timestamps in Chile and Annette Island, Canada. |
| |
| |
| Release 2011b - 2011-02-07 08:44:50 -0500 |
| @@ -3766,7 +4105,7 @@ |
| numbers. Recent releases also come in an experimental format |
| consisting of a single tarball tzdb-R.tar.lz with extra data. |
| |
| -Release time stamps are taken from the release's commit (for newer, |
| +Release timestamps are taken from the release's commit (for newer, |
| Git-based releases), from the newest file in the tarball (for older |
| releases, where this info is available) or from the email announcing |
| the release (if all else fails; these are marked with a time zone of |
| Index: contrib/tzdata/README |
| =================================================================== |
| --- contrib/tzdata/README (版本 324740) |
| +++ contrib/tzdata/README (版本 325322) |
| @@ -10,24 +10,9 @@ |
| changes made by political bodies to time zone boundaries, UTC offsets, |
| and daylight-saving rules. |
| |
| -Here is a recipe for acquiring, building, installing, and testing the |
| -tz distribution on a GNU/Linux or similar host. |
| - |
| -To acquire the distribution, run the following shell commands: |
| - |
| - mkdir tz |
| - cd tz |
| - wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz' |
| - gzip -dc tzcode-latest.tar.gz | tar -xf - |
| - gzip -dc tzdata-latest.tar.gz | tar -xf - |
| - |
| -Alternatively, the following shell commands acquire the same |
| -distribution, with extra data useful for regression testing: |
| - |
| - wget --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz' |
| - lzip -dc tzdb-latest.tar.lz | tar -xf - |
| - |
| -Be sure to read the comments in "Makefile" and make any changes needed |
| +See <https://www.iana.org/time-zones/repository/tz-link.html> or the |
| +file tz-link.htm for how to acquire the code and data. Once acquired, |
| +read the comments in the file 'Makefile' and make any changes needed |
| to make things right for your system, especially if you are using some |
| platform other than GNU/Linux. Then run the following commands, |
| substituting your desired installation directory for "$HOME/tzdir": |
| @@ -60,10 +45,6 @@ |
| maintainer, to whom the time zone community owes the greatest debt of all. |
| None of them are responsible for remaining errors. |
| |
| -Look in <ftp://ftp.iana.org/tz/releases/> for updated versions of these files. |
| - |
| -Please send comments or information to tz@iana.org. |
| - |
| ----- |
| |
| This file is in the public domain, so clarified as of 2009-05-17 by |
| Index: contrib/tzdata/africa |
| =================================================================== |
| --- contrib/tzdata/africa (版本 324740) |
| +++ contrib/tzdata/africa (版本 325322) |
| @@ -6,7 +6,7 @@ |
| # tz@iana.org for general use in the future). For more, please see |
| # the file CONTRIBUTING in the tz distribution. |
| |
| -# From Paul Eggert (2014-10-31): |
| +# From Paul Eggert (2017-02-20): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -13,8 +13,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -26,44 +26,38 @@ |
| # |
| # For data circa 1899, a common source is: |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. |
| -# http://www.jstor.org/stable/1774359 |
| +# https://www.jstor.org/stable/1774359 |
| # |
| # A reliable and entertaining source about time zones is |
| # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). |
| # |
| +# European-style abbreviations are commonly used along the Mediterranean. |
| +# For sub-Saharan Africa abbreviations were less standardized. |
| # Previous editions of this database used WAT, CAT, SAT, and EAT |
| -# for +0:00 through +3:00, respectively, |
| -# but Mark R V Murray reports that |
| -# 'SAST' is the official abbreviation for +2:00 in the country of South Africa, |
| -# 'CAT' is commonly used for +2:00 in countries north of South Africa, and |
| -# 'WAT' is probably the best name for +1:00, as the common phrase for |
| +# for UT +00 through +03, respectively, |
| +# but in 1997 Mark R V Murray reported that |
| +# 'SAST' is the official abbreviation for +02 in the country of South Africa, |
| +# 'CAT' is commonly used for +02 in countries north of South Africa, and |
| +# 'WAT' is probably the best name for +01, as the common phrase for |
| # the area that includes Nigeria is "West Africa". |
| -# He has heard of "Western Sahara Time" for +0:00 but can find no reference. |
| # |
| -# To make things confusing, 'WAT' seems to have been used for -1:00 long ago; |
| -# I'd guess that this was because people needed _some_ name for -1:00, |
| -# and at the time, far west Africa was the only major land area in -1:00. |
| -# This usage is now obsolete, as the last use of -1:00 on the African |
| -# mainland seems to have been 1976 in Western Sahara. |
| +# To summarize, the following abbreviations seemed to have some currency: |
| +# +00 GMT Greenwich Mean Time |
| +# +02 CAT Central Africa Time |
| +# +02 SAST South Africa Standard Time |
| +# and Murray suggested the following abbreviation: |
| +# +01 WAT West Africa Time |
| +# Murray's suggestion seems to have caught on in news reports and the like. |
| +# I vaguely recall 'WAT' also being used for -01 in the past but |
| +# cannot now come up with solid citations. |
| # |
| -# To summarize, the following abbreviations seem to have some currency: |
| -# -1:00 WAT West Africa Time (no longer used) |
| -# 0:00 GMT Greenwich Mean Time |
| -# 2:00 CAT Central Africa Time |
| -# 2:00 SAST South Africa Standard Time |
| -# and Murray suggests the following abbreviation: |
| -# 1:00 WAT West Africa Time |
| -# I realize that this leads to 'WAT' being used for both -1:00 and 1:00 |
| -# for times before 1976, but this is the best I can think of |
| -# until we get more information. |
| -# |
| # I invented the following abbreviations; corrections are welcome! |
| -# 2:00 WAST West Africa Summer Time |
| -# 2:30 BEAT British East Africa Time (no longer used) |
| -# 2:45 BEAUT British East Africa Unified Time (no longer used) |
| -# 3:00 CAST Central Africa Summer Time (no longer used) |
| -# 3:00 SAST South Africa Summer Time (no longer used) |
| -# 3:00 EAT East Africa Time |
| +# +02 WAST West Africa Summer Time |
| +# +03 CAST Central Africa Summer Time (no longer used) |
| +# +03 SAST South Africa Summer Time (no longer used) |
| +# +03 EAT East Africa Time |
| +# 'EAT' also seems to have caught on; the others are rare but are paired |
| +# with better-attested non-DST abbreviations. |
| |
| # Algeria |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| @@ -119,19 +113,19 @@ |
| # Cameroon |
| # See Africa/Lagos. |
| |
| -# Cape Verde |
| +# Cape Verde / Cabo Verde |
| # |
| -# Shanks gives 1907 for the transition to CVT. |
| +# Shanks gives 1907 for the transition to +02. |
| # Perhaps the 1911-05-26 Portuguese decree |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| # merely made it official? |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia |
| - -2:00 - CVT 1942 Sep |
| - -2:00 1:00 CVST 1945 Oct 15 |
| - -2:00 - CVT 1975 Nov 25 2:00 |
| - -1:00 - CVT |
| + -2:00 - -02 1942 Sep |
| + -2:00 1:00 -01 1945 Oct 15 |
| + -2:00 - -02 1975 Nov 25 2:00 |
| + -1:00 - -01 |
| |
| # Central African Republic |
| # See Africa/Lagos. |
| @@ -224,7 +218,7 @@ |
| # saving time in Egypt will end in the night of 2007-09-06 to 2007-09-07. |
| # From Jesper Nørgaard Welen (2007-08-15): [The following agree:] |
| # http://www.nentjes.info/Bill/bill5.htm |
| -# http://www.timeanddate.com/worldclock/city.html?n=53 |
| +# https://www.timeanddate.com/worldclock/city.html?n=53 |
| # From Steffen Thorsen (2007-09-04): The official information...: |
| # http://www.sis.gov.eg/En/EgyptOnline/Miscellaneous/000002/0207000000000000001580.htm |
| Rule Egypt 2007 only - Sep Thu>=1 24:00 0 - |
| @@ -262,8 +256,8 @@ |
| # timeanddate[2] and another site I've found[3] also support that. |
| # |
| # [1] https://bugzilla.redhat.com/show_bug.cgi?id=492263 |
| -# [2] http://www.timeanddate.com/worldclock/clockchange.html?n=53 |
| -# [3] http://wwp.greenwichmeantime.com/time-zone/africa/egypt/ |
| +# [2] https://www.timeanddate.com/worldclock/clockchange.html?n=53 |
| +# [3] https://wwp.greenwichmeantime.com/time-zone/africa/egypt/ |
| |
| # From Arthur David Olson (2009-04-20): |
| # In 2009 (and for the next several years), Ramadan ends before the fourth |
| @@ -273,10 +267,10 @@ |
| # From Steffen Thorsen (2009-08-11): |
| # We have been able to confirm the August change with the Egyptian Cabinet |
| # Information and Decision Support Center: |
| -# http://www.timeanddate.com/news/time/egypt-dst-ends-2009.html |
| +# https://www.timeanddate.com/news/time/egypt-dst-ends-2009.html |
| # |
| # The Middle East News Agency |
| -# http://www.mena.org.eg/index.aspx |
| +# https://www.mena.org.eg/index.aspx |
| # also reports "Egypt starts winter time on August 21" |
| # today in article numbered "71, 11/08/2009 12:25 GMT." |
| # Only the title above is available without a subscription to their service, |
| @@ -326,7 +320,7 @@ |
| # Thursday of April.... Clocks will still be turned back for Ramadan, but |
| # dates not yet announced.... |
| # http://almogaz.com/news/weird-news/2015/04/05/1947105 ... |
| -# http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html |
| +# https://www.timeanddate.com/news/time/egypt-starts-dst-2015.html |
| |
| # From Ahmed Nazmy (2015-04-20): |
| # Egypt's ministers cabinet just announced ... that it will cancel DST at |
| @@ -388,7 +382,7 @@ |
| Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Accra -0:00:52 - LMT 1918 |
| - 0:00 Ghana %s |
| + 0:00 Ghana GMT/+0020 |
| |
| # Guinea |
| # See Africa/Abidjan. |
| @@ -397,12 +391,12 @@ |
| # |
| # Shanks gives 1911-05-26 for the transition to WAT, |
| # evidently confusing the date of the Portuguese decree |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| # with the date that it took effect, namely 1912-01-01. |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 |
| - -1:00 - WAT 1975 |
| + -1:00 - -01 1975 |
| 0:00 - GMT |
| |
| # Kenya |
| @@ -409,8 +403,8 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul |
| 3:00 - EAT 1930 |
| - 2:30 - BEAT 1940 |
| - 2:45 - BEAUT 1960 |
| + 2:30 - +0230 1940 |
| + 2:45 - +0245 1960 |
| 3:00 - EAT |
| Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia |
| Link Africa/Nairobi Africa/Asmara # Eritrea |
| @@ -426,18 +420,25 @@ |
| # See Africa/Johannesburg. |
| |
| # Liberia |
| -# From Paul Eggert (2006-03-22): |
| -# In 1972 Liberia was the last country to switch |
| -# from a UTC offset that was not a multiple of 15 or 20 minutes. |
| -# Howse reports that it was in honor of their president's birthday. |
| -# Shank & Pottenger report the date as May 1, whereas Howse reports Jan; |
| -# go with Shanks & Pottenger. |
| -# For Liberia before 1972, Shanks & Pottenger report -0:44, whereas Howse and |
| -# Whitman each report -0:44:30; go with the more precise figure. |
| +# |
| +# From Paul Eggert (2017-03-02): |
| +# |
| +# The Nautical Almanac for the Year 1970, p 264, is the source for -0:44:30. |
| +# |
| +# In 1972 Liberia was the last country to switch from a UTC offset |
| +# that was not a multiple of 15 or 20 minutes. The 1972 change was on |
| +# 1972-01-07, according to an entry dated 1972-01-04 on p 330 of: |
| +# Presidential Papers: First year of the administration of |
| +# President William R. Tolbert, Jr., July 23, 1971-July 31, 1972. |
| +# Monrovia: Executive Mansion. |
| +# |
| +# Use the abbreviation "MMT" before 1972, as the more-accurate numeric |
| +# abbreviation "-004430" would be one byte over the POSIX limit. |
| +# |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Monrovia -0:43:08 - LMT 1882 |
| -0:43:08 - MMT 1919 Mar # Monrovia Mean Time |
| - -0:44:30 - LRT 1972 May # Liberia Time |
| + -0:44:30 - MMT 1972 Jan 7 # approximately MMT |
| 0:00 - GMT |
| |
| ############################################################################### |
| @@ -446,11 +447,11 @@ |
| |
| # From Even Scharning (2012-11-10): |
| # Libya set their time one hour back at 02:00 on Saturday November 10. |
| -# http://www.libyaherald.com/2012/11/04/clocks-to-go-back-an-hour-on-saturday/ |
| +# https://www.libyaherald.com/2012/11/04/clocks-to-go-back-an-hour-on-saturday/ |
| # Here is an official source [in Arabic]: http://ls.ly/fb6Yc |
| # |
| # Steffen Thorsen forwarded a translation (2012-11-10) in |
| -# http://mm.icann.org/pipermail/tz/2012-November/018451.html |
| +# https://mm.icann.org/pipermail/tz/2012-November/018451.html |
| # |
| # From Tim Parenti (2012-11-11): |
| # Treat the 2012-11-10 change as a zone change from UTC+2 to UTC+1. |
| @@ -461,7 +462,7 @@ |
| # From Even Scharning (2013-10-25): |
| # The scheduled end of DST in Libya on Friday, October 25, 2013 was |
| # cancelled yesterday.... |
| -# http://www.libyaherald.com/2013/10/24/correction-no-time-change-tomorrow/ |
| +# https://www.libyaherald.com/2013/10/24/correction-no-time-change-tomorrow/ |
| # |
| # From Paul Eggert (2013-10-25): |
| # For now, assume they're reverting to the pre-2012 rules of permanent UT +02. |
| @@ -514,7 +515,7 @@ |
| # basis.... |
| # It seems that Mauritius observed daylight saving time from 1982-10-10 to |
| # 1983-03-20 as well, but that was not successful.... |
| -# http://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html |
| +# https://www.timeanddate.com/news/time/mauritius-daylight-saving-time.html |
| |
| # From Alex Krivenyshev (2008-06-25): |
| # http://economicdevelopment.gov.mu/portal/site/Mainhomepage/menuitem.a42b24128104d9845dabddd154508a0c/?content_id=0a7cee8b5d69a110VgnVCM1000000a04a8c0RCRD |
| @@ -582,7 +583,7 @@ |
| # http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-%C3%A9nergie-de-l-heure-d-%C3%A9t%C3%A9-ont-%C3%A9t%C3%A9-atteints- |
| # |
| # Our wrap-up: |
| -# http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html |
| +# https://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html |
| |
| # From Arthur David Olson (2009-07-11): |
| # The "mauritius-dst-will-not-repeat" wrapup includes this: |
| @@ -596,7 +597,7 @@ |
| Rule Mauritius 2009 only - Mar lastSun 2:00 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis |
| - 4:00 Mauritius MU%sT # Mauritius Time |
| + 4:00 Mauritius +04/+05 |
| # Agalega Is, Rodriguez |
| # no information; probably like Indian/Mauritius |
| |
| @@ -614,7 +615,7 @@ |
| # be one hour ahead of GMT between 1 June and 27 September, according to |
| # Communication Minister and Government Spokesman, Khalid Naciri...." |
| # |
| -# http://www.worldtimezone.net/dst_news/dst_news_morocco01.html |
| +# http://www.worldtimezone.com/dst_news/dst_news_morocco01.html |
| # http://en.afrik.com/news11892.html |
| |
| # From Alex Krivenyshev (2008-05-09): |
| @@ -627,7 +628,7 @@ |
| |
| # From Patrice Scattolin (2008-05-09): |
| # According to this article: |
| -# http://www.avmaroc.com/actualite/heure-dete-comment-a127896.html |
| +# https://www.avmaroc.com/actualite/heure-dete-comment-a127896.html |
| # (and republished here: <http://www.actu.ma/heure-dete-comment_i127896_0.html>) |
| # the changes occur at midnight: |
| # |
| @@ -649,7 +650,7 @@ |
| # posted in English). |
| # |
| # The following Google query will generate many relevant hits: |
| -# http://www.google.com/search?hl=en&q=Conseil+de+gouvernement+maroc+heure+avance&btnG=Search |
| +# https://www.google.com/search?hl=en&q=Conseil+de+gouvernement+maroc+heure+avance&btnG=Search |
| |
| # From Steffen Thorsen (2008-08-27): |
| # Morocco will change the clocks back on the midnight between August 31 |
| @@ -660,7 +661,7 @@ |
| # http://www.menara.ma/fr/Actualites/Maroc/Societe/ci.retour_a_l_heure_gmt_a_partir_du_dimanche_31_aout_a_minuit_officiel_.default |
| # |
| # We have some further details posted here: |
| -# http://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html |
| +# https://www.timeanddate.com/news/time/morocco-ends-dst-early-2008.html |
| |
| # From Steffen Thorsen (2009-03-17): |
| # Morocco will observe DST from 2009-06-01 00:00 to 2009-08-21 00:00 according |
| @@ -670,7 +671,7 @@ |
| # (French) |
| # |
| # Our summary: |
| -# http://www.timeanddate.com/news/time/morocco-starts-dst-2009.html |
| +# https://www.timeanddate.com/news/time/morocco-starts-dst-2009.html |
| |
| # From Alexander Krivenyshev (2009-03-17): |
| # Here is a link to official document from Royaume du Maroc Premier Ministre, |
| @@ -693,7 +694,7 @@ |
| # http://www.lavieeco.com/actualites/4099-le-maroc-passera-a-l-heure-d-ete-gmt1-le-2-mai.html |
| # (French) |
| # Our page: |
| -# http://www.timeanddate.com/news/time/morocco-starts-dst-2010.html |
| +# https://www.timeanddate.com/news/time/morocco-starts-dst-2010.html |
| |
| # From Dan Abitol (2011-03-30): |
| # ...Rules for Africa/Casablanca are the following (24h format) |
| @@ -710,7 +711,7 @@ |
| # They said that the decision was already taken. |
| # |
| # More articles in the press |
| -# http://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html |
| +# https://www.yabiladi.com/articles/details/5058/secret-l-heure-d-ete-maroc-leve.html |
| # http://www.lematin.ma/Actualite/Express/Article.asp?id=148923 |
| # http://www.lavieeco.com/actualite/Le-Maroc-passe-sur-GMT%2B1-a-partir-de-dim |
| |
| @@ -802,7 +803,7 @@ |
| # 1433 (18 April 2012) and the decision of the Head of Government of |
| # 16 N. 3-29-15 Chaaban 1435 (4 June 2015). |
| # Source (french): |
| -# http://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/ |
| +# https://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/ |
| # |
| # From Milamber (2015-06-09): |
| # http://www.mmsp.gov.ma/fr/actualites.aspx?id=863 |
| @@ -811,7 +812,7 @@ |
| # [The gov.ma announcement] would (probably) make the switch on 2015-07-19 go |
| # from 03:00 to 04:00 rather than from 02:00 to 03:00, as in the patch.... |
| # I think the patch is correct and the quoted text is wrong; the text in |
| -# <http://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/> agrees |
| +# <https://lnt.ma/le-maroc-reculera-dune-heure-le-dimanche-14-juin/> agrees |
| # with the patch. |
| |
| # From Paul Eggert (2015-06-08): |
| @@ -915,7 +916,7 @@ |
| # since most of it was then controlled by Morocco. |
| |
| Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún |
| - -1:00 - WAT 1976 Apr 14 |
| + -1:00 - -01 1976 Apr 14 |
| 0:00 Morocco WE%sT |
| |
| # Mozambique |
| @@ -922,7 +923,7 @@ |
| # |
| # Shanks gives 1903-03-01 for the transition to CAT. |
| # Perhaps the 1911-05-26 Portuguese decree |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| # merely made it official? |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| @@ -936,10 +937,18 @@ |
| Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo |
| Link Africa/Maputo Africa/Lusaka # Zambia |
| |
| + |
| # Namibia |
| -# The 1994-04-03 transition is from Shanks & Pottenger. |
| -# Shanks & Pottenger report no DST after 1998-04; go with IATA. |
| |
| +# From Arthur David Olson (2017-08-09): |
| +# The text of the "Namibia Time Act, 1994" is available online at |
| +# www.lac.org.na/laws/1994/811.pdf |
| +# and includes this nugget: |
| +# Notwithstanding the provisions of subsection (2) of section 1, the |
| +# first winter period after the commencement of this Act shall |
| +# commence at OOhOO on Monday 21 March 1994 and shall end at 02h00 on |
| +# Sunday 4 September 1994. |
| + |
| # From Petronella Sibeene (2007-03-30): |
| # http://allafrica.com/stories/200703300178.html |
| # While the entire country changes its time, Katima Mulilo and other |
| @@ -949,21 +958,35 @@ |
| # the country are close to 40 minutes earlier in sunrise than the rest |
| # of the country. |
| # |
| -# From Paul Eggert (2007-03-31): |
| -# Apparently the Caprivi Strip informally observes Botswana time, but |
| -# we have no details. In the meantime people there can use Africa/Gaborone. |
| +# From Paul Eggert (2017-02-22): |
| +# Although the Zambezi Region (formerly known as Caprivi) informally |
| +# observes Botswana time, we have no details about historical practice. |
| +# In the meantime people there can use Africa/Gaborone. |
| +# See: Immanuel S. The Namibian. 2017-02-23. |
| +# https://www.namibian.com.na/51480/read/Time-change-divides-lawmakers |
| |
| +# From Steffen Thorsen (2017-08-09): |
| +# Namibia is going to change their time zone to what is now their DST: |
| +# https://www.newera.com.na/2017/02/23/namibias-winter-time-might-be-repealed/ |
| +# This video is from the government decision: |
| +# https://www.nbc.na/news/na-passes-namibia-time-bill-repealing-1994-namibia-time-act.8665 |
| +# We have made the assumption so far that they will change their time zone at |
| +# the same time they would normally start DST, the first Sunday in September: |
| +# https://www.timeanddate.com/news/time/namibia-new-time-zone.html |
| + |
| # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S |
| -Rule Namibia 1995 max - Apr Sun>=1 2:00 0 - |
| +Rule Namibia 1994 only - Mar 21 0:00 0 - |
| +Rule Namibia 1994 2016 - Sep Sun>=1 2:00 1:00 S |
| +Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 |
| - 1:30 - SWAT 1903 Mar # SW Africa Time |
| + 1:30 - +0130 1903 Mar |
| 2:00 - SAST 1942 Sep 20 2:00 |
| 2:00 1:00 SAST 1943 Mar 21 2:00 |
| 2:00 - SAST 1990 Mar 21 # independence |
| - 2:00 - CAT 1994 Apr 3 |
| - 1:00 Namibia WA%sT |
| + 2:00 - CAT 1994 Mar 21 0:00 |
| + 1:00 Namibia WA%sT 2017 Sep 3 2:00 |
| + 2:00 - CAT |
| |
| # Niger |
| # See Africa/Lagos. |
| @@ -985,7 +1008,7 @@ |
| # Réunion |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis |
| - 4:00 - RET # Réunion Time |
| + 4:00 - +04 |
| # |
| # Crozet Islands also observes Réunion time; see the 'antarctica' file. |
| # |
| @@ -1020,7 +1043,7 @@ |
| # Seychelles |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria |
| - 4:00 - SCT # Seychelles Time |
| + 4:00 - +04 |
| # From Paul Eggert (2001-05-30): |
| # Aldabra, Farquhar, and Desroches, originally dependencies of the |
| # Seychelles, were transferred to the British Indian Ocean Territory |
| @@ -1050,7 +1073,7 @@ |
| # no information |
| |
| # Sudan |
| -# |
| + |
| # From <http://www.sunanews.net/sn13jane.html> |
| # Sudan News Agency (2000-01-13), |
| # also reported by Michaël De Beukelaer-Dossche via Steffen Thorsen: |
| @@ -1057,7 +1080,17 @@ |
| # Clocks will be moved ahead for 60 minutes all over the Sudan as of noon |
| # Saturday.... This was announced Thursday by Caretaker State Minister for |
| # Manpower Abdul-Rahman Nur-Eddin. |
| + |
| +# From Ahmed Atyya, National Telecommunications Corp. (NTC), Sudan (2017-10-17): |
| +# ... the Republic of Sudan is going to change the time zone from (GMT+3:00) |
| +# to (GMT+ 2:00) starting from Wednesday 1 November 2017. |
| # |
| +# From Paul Eggert (2017-10-18): |
| +# A scanned copy (in Arabic) of Cabinet Resolution No. 352 for the |
| +# year 2017 can be found as an attachment in email today from Yahia |
| +# Abdalla of NTC, archived at: |
| +# https://mm.icann.org/pipermail/tz/2017-October/025333.html |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Sudan 1970 only - May 1 0:00 1:00 S |
| Rule Sudan 1970 1985 - Oct 15 0:00 0 - |
| @@ -1066,10 +1099,14 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Africa/Khartoum 2:10:08 - LMT 1931 |
| 2:00 Sudan CA%sT 2000 Jan 15 12:00 |
| - 3:00 - EAT |
| + 3:00 - EAT 2017 Nov 1 |
| + 2:00 - CAT |
| |
| # South Sudan |
| -Link Africa/Khartoum Africa/Juba |
| +# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| +Zone Africa/Juba 2:06:28 - LMT 1931 |
| + 2:00 Sudan CA%sT 2000 Jan 15 12:00 |
| + 3:00 - EAT |
| |
| # Swaziland |
| # See Africa/Johannesburg. |
| @@ -1107,11 +1144,11 @@ |
| # According to several news sources, Tunisia will not observe DST this year. |
| # (Arabic) |
| # http://www.elbashayer.com/?page=viewn&nid=42546 |
| -# http://www.babnet.net/kiwidetail-15295.asp |
| +# https://www.babnet.net/kiwidetail-15295.asp |
| # |
| # We have also confirmed this with the US embassy in Tunisia. |
| # We have a wrap-up about this on the following page: |
| -# http://www.timeanddate.com/news/time/tunisia-cancels-dst-2009.html |
| +# https://www.timeanddate.com/news/time/tunisia-cancels-dst-2009.html |
| |
| # From Alexander Krivenyshev (2009-03-17): |
| # Here is a link to Tunis Afrique Presse News Agency |
| Index: contrib/tzdata/antarctica |
| =================================================================== |
| --- contrib/tzdata/antarctica (版本 324740) |
| +++ contrib/tzdata/antarctica (版本 325322) |
| @@ -26,7 +26,7 @@ |
| # Heard Island, McDonald Islands (uninhabited) |
| # previously sealers and scientific personnel wintered |
| # Margaret Turner reports |
| -# http://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html |
| +# https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html |
| # (1999-09-30) that they're UT +05, with no DST; |
| # presumably this is when they have visitors. |
| # |
| @@ -47,7 +47,7 @@ |
| # http://www.aad.gov.au/default.asp?casid=37079 |
| # |
| # We have more background information here: |
| -# http://www.timeanddate.com/news/time/antarctica-new-times.html |
| +# https://www.timeanddate.com/news/time/antarctica-new-times.html |
| |
| # From Steffen Thorsen (2010-03-10): |
| # We got these changes from the Australian Antarctic Division: ... |
| @@ -62,7 +62,7 @@ |
| # - Mawson station stays on UTC+5. |
| # |
| # Background: |
| -# http://www.timeanddate.com/news/time/antartica-time-changes-2010.html |
| +# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html |
| |
| # From Steffen Thorsen (2016-10-28): |
| # Australian Antarctica Division informed us that Casey changed time |
| @@ -110,7 +110,8 @@ |
| # O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02 |
| # Prat, -6230-05941 |
| # Villa Las Estrellas (a town), around the Frei base, since 1984-04-09 |
| -# These locations have always used Santiago time; use TZ='America/Santiago'. |
| +# These locations employ Region of Magallanes time; use |
| +# TZ='America/Punta_Arenas'. |
| |
| # China - year-round bases |
| # Great Wall, King George Island, -6213-05858, since 1985-02-20 |
| @@ -144,7 +145,7 @@ |
| # |
| # year-round base in the main continent |
| # Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 |
| -# <http://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05) |
| +# <https://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05) |
| # |
| # Another base at Port-Martin, 50km east, began operation in 1947. |
| # It was destroyed by fire on 1952-01-14. |
| Index: contrib/tzdata/asia |
| =================================================================== |
| --- contrib/tzdata/asia (版本 324740) |
| +++ contrib/tzdata/asia (版本 325322) |
| @@ -6,7 +6,7 @@ |
| # tz@iana.org for general use in the future). For more, please see |
| # the file CONTRIBUTING in the tz distribution. |
| |
| -# From Paul Eggert (2015-08-08): |
| +# From Paul Eggert (2017-01-13): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -13,8 +13,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -26,7 +26,7 @@ |
| # |
| # For data circa 1899, a common source is: |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. |
| -# http://www.jstor.org/stable/1774359 |
| +# https://www.jstor.org/stable/1774359 |
| # |
| # For Russian data circa 1919, a source is: |
| # Byalokoz EL. New Counting of Time in Russia since July 1, 1919. |
| @@ -35,29 +35,24 @@ |
| # A reliable and entertaining source about time zones is |
| # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). |
| # |
| -# I invented the abbreviations marked '*' in the following table; |
| -# the rest are from earlier versions of this file, or from other sources. |
| -# Corrections are welcome! |
| +# The following alphabetic abbreviations appear in these tables: |
| # std dst |
| # LMT Local Mean Time |
| # 2:00 EET EEST Eastern European Time |
| # 2:00 IST IDT Israel |
| -# 3:00 AST ADT Arabia* |
| -# 3:30 IRST IRDT Iran* |
| -# 4:00 GST Gulf* |
| # 5:30 IST India |
| -# 7:00 ICT Indochina, most times and locations* |
| # 7:00 WIB west Indonesia (Waktu Indonesia Barat) |
| # 8:00 WITA central Indonesia (Waktu Indonesia Tengah) |
| # 8:00 CST China |
| -# 8:00 IDT Indochina, 1943-45, 1947-55, 1960-75 (some locations)* |
| -# 8:00 JWST Western Standard Time (Japan, 1896/1937)* |
| -# 8:30 KST KDT Korea when at +0830* |
| -# 9:00 JCST Central Standard Time (Japan, 1896/1937) |
| +# 8:30 KST KDT Korea when at +0830 |
| # 9:00 WIT east Indonesia (Waktu Indonesia Timur) |
| # 9:00 JST JDT Japan |
| # 9:00 KST KDT Korea when at +09 |
| # 9:30 ACST Australian Central Standard Time |
| +# Otherwise, these tables typically use numeric abbreviations like +03 |
| +# and +0330 for integer hour and minute UTC offsets. Although earlier |
| +# editions invented alphabetic time zone abbreviations for every |
| +# offset, this did not reflect common practice. |
| # |
| # See the 'europe' file for Russia and Turkey in Asia. |
| |
| @@ -65,7 +60,7 @@ |
| # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as |
| # additional information from Tom Yap, Sun Microsystems Intercontinental |
| # Technical Support (including a page from the Official Airline Guide - |
| -# Worldwide Edition). The names for time zones are guesses. |
| +# Worldwide Edition). |
| |
| ############################################################################### |
| |
| @@ -80,14 +75,14 @@ |
| Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S |
| Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 - |
| Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 - |
| -Rule RussiaAsia 1985 2011 - Mar lastSun 2:00s 1:00 S |
| -Rule RussiaAsia 1996 2011 - Oct lastSun 2:00s 0 - |
| +Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 S |
| +Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 - |
| |
| # Afghanistan |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Kabul 4:36:48 - LMT 1890 |
| - 4:00 - AFT 1945 |
| - 4:30 - AFT |
| + 4:00 - +04 1945 |
| + 4:30 - +0430 |
| |
| # Armenia |
| # From Paul Eggert (2006-03-22): |
| @@ -114,6 +109,9 @@ |
| # or |
| # (brief) |
| # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html |
| +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| +Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 S |
| +Rule Armenia 2011 only - Oct lastSun 2:00s 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2 |
| 3:00 - +03 1957 Mar |
| @@ -120,7 +118,8 @@ |
| 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s |
| 3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s |
| 4:00 - +04 1997 |
| - 4:00 RussiaAsia +04/+05 |
| + 4:00 RussiaAsia +04/+05 2011 |
| + 4:00 Armenia +04/+05 |
| |
| # Azerbaijan |
| |
| @@ -132,7 +131,7 @@ |
| # From Steffen Thorsen (2016-03-17): |
| # ... the Azerbaijani Cabinet of Ministers has cancelled switching to |
| # daylight saving time.... |
| -# http://www.azernews.az/azerbaijan/94137.html |
| +# https://www.azernews.az/azerbaijan/94137.html |
| # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html |
| # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html |
| |
| @@ -173,11 +172,11 @@ |
| # the 19th and 20th, and they have not set the end date yet. |
| # |
| # Some sources: |
| -# http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601 |
| +# https://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601 |
| # http://bdnews24.com/details.php?id=85889&cid=2 |
| # |
| # Our wrap-up: |
| -# http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html |
| +# https://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html |
| |
| # From A. N. M. Kamrus Saadat (2009-06-15): |
| # Finally we've got the official mail regarding DST start time where DST start |
| @@ -230,18 +229,17 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Dhaka 6:01:40 - LMT 1890 |
| 5:53:20 - HMT 1941 Oct # Howrah Mean Time? |
| - 6:30 - BURT 1942 May 15 # Burma Time |
| - 5:30 - IST 1942 Sep |
| - 6:30 - BURT 1951 Sep 30 |
| - 6:00 - DACT 1971 Mar 26 # Dacca Time |
| - 6:00 - BDT 2009 |
| - 6:00 Dhaka BD%sT |
| + 6:30 - +0630 1942 May 15 |
| + 5:30 - +0530 1942 Sep |
| + 6:30 - +0630 1951 Sep 30 |
| + 6:00 - +06 2009 |
| + 6:00 Dhaka +06/+07 |
| |
| # Bhutan |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu |
| - 5:30 - IST 1987 Oct |
| - 6:00 - BTT # Bhutan Time |
| + 5:30 - +0530 1987 Oct |
| + 6:00 - +06 |
| |
| # British Indian Ocean Territory |
| # Whitman and the 1995 CIA time zone map say 5:00, but the |
| @@ -251,25 +249,31 @@ |
| # then contained the Chagos Archipelago). |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Chagos 4:49:40 - LMT 1907 |
| - 5:00 - IOT 1996 # BIOT Time |
| - 6:00 - IOT |
| + 5:00 - +05 1996 |
| + 6:00 - +06 |
| |
| # Brunei |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan |
| - 7:30 - BNT 1933 |
| - 8:00 - BNT |
| + 7:30 - +0730 1933 |
| + 8:00 - +08 |
| |
| # Burma / Myanmar |
| |
| # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon. |
| |
| +# From Paul Eggert (2017-04-20): |
| +# Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is |
| +# used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead |
| +# of Greenwich." This refers to the period before Burma's transition to +0630, |
| +# a transition for which Shanks is the only source. |
| + |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| -Zone Asia/Yangon 6:24:40 - LMT 1880 # or Rangoon |
| - 6:24:40 - RMT 1920 # Rangoon Mean Time? |
| - 6:30 - BURT 1942 May # Burma Time |
| - 9:00 - JST 1945 May 3 |
| - 6:30 - MMT # Myanmar Time |
| +Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon |
| + 6:24:47 - RMT 1920 # Rangoon local time |
| + 6:30 - +0630 1942 May |
| + 9:00 - +09 1945 May 3 |
| + 6:30 - +0630 |
| |
| # Cambodia |
| # See Asia/Bangkok. |
| @@ -323,7 +327,7 @@ |
| # |
| # From Jesper Nørgaard Welen (2006-07-14): |
| # I have investigated the timezones around 1970 on the |
| -# http://www.astro.com/atlas site [with provinces and county |
| +# https://www.astro.com/atlas site [with provinces and county |
| # boundaries summarized below].... A few other exceptions were two |
| # counties on the Sichuan side of the Xizang-Sichuan border, |
| # counties Dege and Baiyu which lies on the Sichuan side and are |
| @@ -332,7 +336,7 @@ |
| # (could be true), for the moment I am assuming that those two |
| # counties are mistakes in the astro.com data. |
| |
| -# From Paul Eggert (2014-06-30): |
| +# From Paul Eggert (2017-01-05): |
| # Alois Treindl kindly sent me translations of the following two sources: |
| # |
| # (1) |
| @@ -390,28 +394,26 @@ |
| # mainly observed in coastal areas), the five zones were: |
| # |
| # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT +08:30 |
| -# Asia/Harbin (currently a link to Asia/Shanghai) |
| +# Now part of Asia/Shanghai; its pre-1970 times are not recorded here. |
| # Heilongjiang (except Mohe county), Jilin |
| # |
| # Zhongyuan Time ("Central plain Time") UT +08 |
| -# Asia/Shanghai |
| +# Now part of Asia/Shanghai. |
| # most of China |
| -# This currently represents most other zones as well, |
| -# as apparently these regions have been the same since 1970. |
| # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest. |
| # Guo says Shanghai switched to UT +08 "from the end of the 19th century". |
| # |
| -# Long-shu Time (probably due to Long and Shu being two names of the area) UT +07 |
| -# Asia/Chongqing (currently a link to Asia/Shanghai) |
| +# Long-shu Time (probably as Long and Shu were two names of the area) UT +07 |
| +# Now part of Asia/Shanghai; its pre-1970 times are not recorded here. |
| # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan; |
| -# most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong |
| +# most of Gansu; west Inner Mongolia; east Qinghai; and the Guangdong |
| # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing, |
| # Yangchun, Yangjiang, Yu'nan, and Yunfu. |
| # |
| # Xin-zang Time ("Xinjiang-Tibet Time") UT +06 |
| -# Asia/Urumqi |
| -# This currently represents Kunlun Time as well, |
| -# as apparently the two regions have been the same since 1970. |
| +# This region is now part of either Asia/Urumqi or Asia/Shanghai with |
| +# current boundaries uncertain; times before 1970 for areas that |
| +# disagree with Ürümqi or Shanghai are not recorded here. |
| # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai; |
| # the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang, |
| # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi; |
| @@ -422,7 +424,7 @@ |
| # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan. |
| # |
| # Kunlun Time UT +05:30 |
| -# Asia/Kashgar (currently a link to Asia/Urumqi) |
| +# This region is now in the same status as Xin-zang Time (see above). |
| # West Tibet, including Pulan, Aheqi, Shufu, Shule; |
| # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke, |
| # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding, |
| @@ -477,7 +479,7 @@ |
| |
| # From David Cochrane (2014-03-26): |
| # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986: |
| -# http://content.time.com/time/magazine/article/0,9171,960684,00.html |
| +# https://content.time.com/time/magazine/article/0,9171,960684,00.html |
| |
| # From Luther Ma (2014-04-22): |
| # I have interviewed numerous people of various nationalities and from |
| @@ -523,7 +525,7 @@ |
| # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi |
| # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) |
| Zone Asia/Urumqi 5:50:20 - LMT 1928 |
| - 6:00 - XJT |
| + 6:00 - +06 |
| |
| |
| # Hong Kong (Xianggang) |
| @@ -634,7 +636,7 @@ |
| # (both in Okinawa) adopt the Western Standard Time which is based on |
| # 120E. The adoption began from Jan 1, 1896. The original text can be |
| # found on Wikisource: |
| -# http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) |
| +# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) |
| # ... This could be the first adoption of time zone in Taiwan, because |
| # during the Qing Dynasty, it seems that there was no time zone |
| # declared officially. |
| @@ -647,7 +649,7 @@ |
| # territory, including later occupations, adopt Japan Central Time |
| # (UTC+9). The adoption began on Oct 1, 1937. The original text can |
| # be found on Wikisource: |
| -# http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 |
| +# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 |
| # |
| # That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937. |
| |
| @@ -742,30 +744,29 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| # Taipei or Taibei or T'ai-pei |
| Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1 |
| - 8:00 - JWST 1937 Oct 1 |
| + 8:00 - CST 1937 Oct 1 |
| 9:00 - JST 1945 Sep 21 1:00 |
| 8:00 Taiwan C%sT |
| |
| # Macau (Macao, Aomen) |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S |
| -Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 - |
| -Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S |
| -Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S |
| -Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S |
| -Rule Macau 1965 only - Oct 31 0:00 0 - |
| -Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S |
| -Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 - |
| -Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S |
| -Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 - |
| -Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 - |
| -Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S |
| -Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S |
| -Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 - |
| +Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 D |
| +Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 S |
| +Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 D |
| +Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 D |
| +Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 D |
| +Rule Macau 1965 only - Oct 31 0:00 0 S |
| +Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 D |
| +Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 S |
| +Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 D |
| +Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 S |
| +Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 S |
| +Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 D |
| +Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 D |
| +Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 S |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1 |
| - 8:00 Macau MO%sT 1999 Dec 20 # return to China |
| - 8:00 PRC C%sT |
| + 8:00 Macau C%sT |
| |
| |
| ############################################################################### |
| @@ -784,6 +785,12 @@ |
| # Looks like the time zone split in Cyprus went through last night. |
| # http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/ |
| |
| +# From Paul Eggert (2017-10-18): |
| +# Northern Cyprus will reinstate winter time on October 29, thus |
| +# staying in sync with the rest of Cyprus. See: Anastasiou A. |
| +# Cyprus to remain united in time. Cyprus Mail 2017-10-17. |
| +# https://cyprus-mail.com/2017/10/17/cyprus-remain-united-time/ |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Cyprus 1975 only - Apr 13 0:00 1:00 S |
| Rule Cyprus 1975 only - Oct 12 0:00 0 - |
| @@ -801,7 +808,8 @@ |
| Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14 |
| 2:00 Cyprus EE%sT 1998 Sep |
| 2:00 EUAsia EE%sT 2016 Sep 8 |
| - 3:00 - +03 |
| + 3:00 - +03 2017 Oct 29 1:00u |
| + 2:00 EUAsia EE%sT |
| |
| # Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72. |
| # However, for various reasons many users expect to find it under Europe. |
| @@ -861,7 +869,7 @@ |
| |
| # From João Carrascalão, brother of the former governor of East Timor, in |
| # East Timor may be late for its millennium |
| -# <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31): |
| +# <https://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31): |
| # Portugal tried to change the time forward in 1974 because the sun |
| # rises too early but the suggestion raised a lot of problems with the |
| # Timorese and I still don't think it would work today because it |
| @@ -881,16 +889,15 @@ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 |
| - 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time |
| - 9:00 - JST 1945 Sep 23 |
| - 9:00 - TLT 1976 May 3 |
| - 8:00 - WITA 2000 Sep 17 0:00 |
| - 9:00 - TLT |
| + 8:00 - +08 1942 Feb 21 23:00 |
| + 9:00 - +09 1976 May 3 |
| + 8:00 - +08 2000 Sep 17 0:00 |
| + 9:00 - +09 |
| |
| # India |
| |
| # From Ian P. Beacock, in "A brief history of (modern) time", The Atlantic |
| -# http://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/ |
| +# https://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/ |
| # (2015-12-22): |
| # In January 1906, several thousand cotton-mill workers rioted on the |
| # outskirts of Bombay.... They were protesting the proposed abolition of |
| @@ -897,14 +904,55 @@ |
| # local time in favor of Indian Standard Time.... Journalists called this |
| # dispute the "Battle of the Clocks." It lasted nearly half a century. |
| |
| +# From Paul Eggert (2017-04-20): |
| +# Good luck trying to nail down old timekeeping records in India. |
| +# "... in the nineteenth century ... Madras Observatory took its magnetic |
| +# measurements on Göttingen time, its meteorological measurements on Madras |
| +# (local) time, dropped its time ball on Greenwich (ocean navigator's) time, |
| +# and distributed civil (local time)." -- Bartky IR. Selling the true time: |
| +# 19th-century timekeeping in america. Stanford U Press (2000), 247 note 19. |
| +# "A more potent cause of resistance to the general adoption of the present |
| +# standard time lies in the fact that it is Madras time. The citizen of |
| +# Bombay, proud of being 'primus in Indis' and of Calcutta, equally proud of |
| +# his city being the Capital of India, and - for a part of the year - the Seat |
| +# of the Supreme Government, alike look down on Madras, and refuse to change |
| +# the time they are using, for that of what they regard as a benighted |
| +# Presidency; while Madras, having for long given the standard time to the |
| +# rest of India, would resist the adoption of any other Indian standard in its |
| +# place." -- Oldham RD. On Time in India: a suggestion for its improvement. |
| +# Proceedings of the Asiatic Society of Bengal (April 1899), 49-55. |
| +# |
| +# "In 1870 ... Madras time - 'now used by the telegraph and regulated from the |
| +# only government observatory' - was suggested as a standard railway time, |
| +# first to be adopted on the Great Indian Peninsular Railway (GIPR).... |
| +# Calcutta, Bombay, and Karachi, were to be allowed to continue with their |
| +# local time for civil purposes." - Prasad R. Tracks of Change: Railways and |
| +# Everyday Life in Colonial India. Cambridge University Press (2016), 145. |
| +# |
| +# Reed S, Low F. The Indian Year Book 1936-37. Bennett, Coleman, pp 27-8. |
| +# https://archive.org/details/in.ernet.dli.2015.282212 |
| +# This lists +052110 as Madras local time used in railways, and says that on |
| +# 1906-01-01 railways and telegraphs in India switched to +0530. Some |
| +# municipalities retained their former time, and the time in Calcutta |
| +# continued to depend on whether you were at the railway station or at |
| +# government offices. Government time was at +055320 (according to Shanks) or |
| +# at +0554 (according to the Indian Year Book). Railway time is more |
| +# appropriate for our purposes, as it was better documented, it is what we do |
| +# elsewhere (e.g., Europe/London before 1880), and after 1906 it was |
| +# consistent in the region now identified by Asia/Kolkata. So, use railway |
| +# time for 1870-1941. Shanks is our only (and dubious) source for the |
| +# 1941-1945 data. |
| + |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| -Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata |
| - 5:53:20 - HMT 1941 Oct # Howrah Mean Time? |
| - 6:30 - BURT 1942 May 15 # Burma Time |
| +Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata |
| + 5:53:20 - HMT 1870 # Howrah Mean Time? |
| + 5:21:10 - MMT 1906 Jan 1 # Madras local time |
| + 5:30 - IST 1941 Oct |
| + 5:30 1:00 +0630 1942 May 15 |
| 5:30 - IST 1942 Sep |
| - 5:30 1:00 IST 1945 Oct 15 |
| + 5:30 1:00 +0630 1945 Oct 15 |
| 5:30 - IST |
| -# The following are like Asia/Kolkata: |
| +# Since 1970 the following are like Asia/Kolkata: |
| # Andaman Is |
| # Lakshadweep (Laccadive, Minicoy and Amindivi Is) |
| # Nicobar Is |
| @@ -953,33 +1001,33 @@ |
| # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, |
| # but this must be a typo. |
| 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia |
| - 7:20 - JAVT 1932 Nov # Java Time |
| - 7:30 - WIB 1942 Mar 23 |
| - 9:00 - JST 1945 Sep 23 |
| - 7:30 - WIB 1948 May |
| - 8:00 - WIB 1950 May |
| - 7:30 - WIB 1964 |
| + 7:20 - +0720 1932 Nov |
| + 7:30 - +0730 1942 Mar 23 |
| + 9:00 - +09 1945 Sep 23 |
| + 7:30 - +0730 1948 May |
| + 8:00 - +08 1950 May |
| + 7:30 - +0730 1964 |
| 7:00 - WIB |
| # west and central Borneo |
| Zone Asia/Pontianak 7:17:20 - LMT 1908 May |
| 7:17:20 - PMT 1932 Nov # Pontianak MT |
| - 7:30 - WIB 1942 Jan 29 |
| - 9:00 - JST 1945 Sep 23 |
| - 7:30 - WIB 1948 May |
| - 8:00 - WIB 1950 May |
| - 7:30 - WIB 1964 |
| + 7:30 - +0730 1942 Jan 29 |
| + 9:00 - +09 1945 Sep 23 |
| + 7:30 - +0730 1948 May |
| + 8:00 - +08 1950 May |
| + 7:30 - +0730 1964 |
| 8:00 - WITA 1988 Jan 1 |
| 7:00 - WIB |
| # Sulawesi, Lesser Sundas, east and south Borneo |
| Zone Asia/Makassar 7:57:36 - LMT 1920 |
| 7:57:36 - MMT 1932 Nov # Macassar MT |
| - 8:00 - WITA 1942 Feb 9 |
| - 9:00 - JST 1945 Sep 23 |
| + 8:00 - +08 1942 Feb 9 |
| + 9:00 - +09 1945 Sep 23 |
| 8:00 - WITA |
| # Maluku Islands, West Papua, Papua |
| Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov |
| - 9:00 - WIT 1944 Sep 1 |
| - 9:30 - ACST 1964 |
| + 9:00 - +09 1944 Sep 1 |
| + 9:30 - +0930 1964 |
| 9:00 - WIT |
| |
| # Iran |
| @@ -1011,8 +1059,6 @@ |
| # for at least the last 5 years. Before that, for a few years, the |
| # date used was the first Thursday night of Farvardin and the last |
| # Thursday night of Shahrivar, but I can't give exact dates.... |
| -# I have also changed the abbreviations to what is considered correct |
| -# here in Iran, IRST for regular time and IRDT for daylight saving time. |
| # |
| # From Roozbeh Pournader (2005-04-05): |
| # The text of the Iranian law, in effect since 1925, clearly mentions |
| @@ -1048,7 +1094,7 @@ |
| # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen: |
| # ... the Guardian Council ... approved a law on Sunday to re-introduce |
| # daylight saving time ... |
| -# http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916 |
| +# https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916 |
| # |
| # From Roozbeh Pournader (2007-11-05): |
| # This is quoted from Official Gazette of the Islamic Republic of |
| @@ -1119,9 +1165,9 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Tehran 3:25:44 - LMT 1916 |
| 3:25:44 - TMT 1946 # Tehran Mean Time |
| - 3:30 - IRST 1977 Nov |
| - 4:00 Iran IR%sT 1979 |
| - 3:30 Iran IR%sT |
| + 3:30 - +0330 1977 Nov |
| + 4:00 Iran +04/+05 1979 |
| + 3:30 Iran +0330/+0430 |
| |
| |
| # Iraq |
| @@ -1147,7 +1193,7 @@ |
| # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10 |
| # |
| # We have published a short article in English about the change: |
| -# http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html |
| +# https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html |
| |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Iraq 1982 only - May 1 0:00 1:00 D |
| @@ -1164,8 +1210,8 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Baghdad 2:57:40 - LMT 1890 |
| 2:57:36 - BMT 1918 # Baghdad Mean Time? |
| - 3:00 - AST 1982 May |
| - 3:00 Iraq A%sT |
| + 3:00 - +03 1982 May |
| + 3:00 Iraq +03/+04 |
| |
| |
| ############################################################################### |
| @@ -1455,17 +1501,15 @@ |
| # From Yu-Cheng Chuang (2013-07-12): |
| # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause |
| # about standard time" ... The adoption began from Jan 1, 1896. |
| -# http://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) |
| +# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) |
| # |
| # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which |
| # means the whole Japan territory, including later occupations, adopt Japan |
| # Central Time (UTC+9). The adoption began on Oct 1, 1937. |
| -# http://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 |
| +# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u |
| - 9:00 - JST 1896 Jan 1 |
| - 9:00 - JCST 1937 Oct 1 |
| 9:00 Japan J%sT |
| # Since 1938, all Japanese possessions have been like Asia/Tokyo. |
| |
| @@ -1524,7 +1568,7 @@ |
| # Official, in Arabic: |
| # http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14 |
| # ... Our background/permalink about it |
| -# http://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html |
| +# https://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html |
| # ... |
| # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P |
| # ... says midnight for the coming one and 1:00 for the ones in the future |
| @@ -1583,12 +1627,12 @@ |
| # was "blended" with the Central zone. Therefore, Kazakhstan now has |
| # two time zones, and difference between them is one hour. The zone |
| # closer to UTC is the former Western zone (probably still called the |
| -# same), encompassing four provinces in the west: Aqtobe, Atyrau, |
| -# Mangghystau, and West Kazakhstan. The other zone encompasses |
| +# same), encompassing four provinces in the west: Aqtöbe, Atyraū, |
| +# Mangghystaū, and West Kazakhstan. The other zone encompasses |
| # everything else.... I guess that would make Kazakhstan time zones |
| # de jure UTC+5 and UTC+6 respectively. |
| |
| -# From Stepan Golosunov (2016-03-27) ([*] means see later comments below): |
| +# From Stepan Golosunov (2016-03-27): |
| # Review of the linked documents from http://adilet.zan.kz/ |
| # produced the following data for post-1991 Kazakhstan: |
| # |
| @@ -1634,7 +1678,7 @@ |
| # |
| # This implies that on 1991-03-31 Asia/Oral remained on +04/+05 while |
| # the rest of Kazakhstan switched from +06/+07 to +05/06 or from +05/06 |
| -# to +04/+05. It's unclear how Kzyl-Orda oblast moved into the fifth |
| +# to +04/+05. It's unclear how Qyzylorda oblast moved into the fifth |
| # time belt. (By switching from +04/+05 to +05/+06 on 1991-09-29?) ... |
| # |
| # 1. Act of the Cabinet of Ministers of the Republic of Kazakhstan |
| @@ -1647,18 +1691,18 @@ |
| # on the whole territory of Kazakhstan 1 hour forward on 1992-01-19 at |
| # 2:00, specified DST rules. It acknowledged that Kazakhstan was |
| # located in the fourth and the fifth time belts and specified the |
| -# border between them to be located east of Kustanay and Aktyubinsk |
| -# oblasts (notably including Turgai and Kzyl-Orda oblasts into the fifth |
| +# border between them to be located east of Qostanay and Aktyubinsk |
| +# oblasts (notably including Turgai and Qyzylorda oblasts into the fifth |
| # time belt). |
| # |
| # This means switch on 1992-01-19 at 2:00 from +04/+05 to +05/+06 for |
| -# Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyrau and Kustanay oblasts; from |
| -# +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk) [*].... |
| +# Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyraū and Qostanay oblasts; from |
| +# +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk).... |
| # |
| # 2. Act of the Cabinet of Ministers of the Republic of Kazakhstan |
| # from 1992-03-27 No. 284 |
| # http://adilet.zan.kz/rus/docs/P920000284_ |
| -# cancels extra hour ("decree time") for Uralsk and Kzyl-Orda oblasts |
| +# cancels extra hour ("decree time") for Uralsk and Qyzylorda oblasts |
| # since the last Sunday of March 1992, while keeping them in the fourth |
| # and the fifth time belts respectively. |
| # |
| @@ -1665,7 +1709,7 @@ |
| # 3. Order of the Prime Minister of the Republic of Kazakhstan |
| # from 1994-09-23 No. 384 |
| # http://adilet.zan.kz/rus/docs/R940000384_ |
| -# cancels the extra hour ("decree time") on the territory of Mangystau |
| +# cancels the extra hour ("decree time") on the territory of Mangghystaū |
| # oblast since the last Sunday of September 1994 (saying that time on |
| # the territory would correspond to the third time belt as a |
| # result).... |
| @@ -1679,15 +1723,12 @@ |
| # 5. Act of the Government of the Republic of Kazakhstan |
| # from 1999-03-26 No. 305 |
| # http://adilet.zan.kz/rus/docs/P990000305_ |
| -# cancels the extra hour ("decree time") for Atyrau oblast since the |
| +# cancels the extra hour ("decree time") for Atyraū oblast since the |
| # last Sunday of March 1999 while retaining the oblast in the fourth |
| # time belt. |
| # |
| -# This means change from +05/+06 to +04/+05. |
| +# This means change from +05/+06 to +04/+05.... |
| # |
| -# There is no zone for Atyrau currently (listed under Asia/Aqtau in |
| -# zone1970.tab).[*] |
| -# |
| # 6. Act of the Government of the Republic of Kazakhstan |
| # from 2000-11-23 No. 1749 |
| # http://adilet.zan.kz/rus/archive/docs/P000001749_/23.11.2000 |
| @@ -1696,10 +1737,10 @@ |
| # The only changes I noticed are in definition of the border between the |
| # fourth and the fifth time belts. They account for changes in spelling |
| # and administrative division (splitting of Turgai oblast in 1997 |
| -# probably changed time in territories incorporated into Kostanay oblast |
| -# (including Arkalyk) from +06/+07 to +05/+06) and move Kyzylorda oblast |
| +# probably changed time in territories incorporated into Qostanay oblast |
| +# (including Arkalyk) from +06/+07 to +05/+06) and move Qyzylorda oblast |
| # from being in the fifth time belt and not using decree time into the |
| -# fourth time belt (no change in practice).[*] |
| +# fourth time belt (no change in practice). |
| # |
| # 7. Act of the Government of the Republic of Kazakhstan |
| # from 2003-12-29 No. 1342 |
| @@ -1709,7 +1750,7 @@ |
| # 8. Act of the Government of the Republic of Kazakhstan |
| # from 2004-07-20 No. 775 |
| # http://adilet.zan.kz/rus/archive/docs/P040000775_/20.07.2004 |
| -# modified the 2000-11-23 act to move Kostanay and Kyzylorda oblasts into |
| +# modified the 2000-11-23 act to move Qostanay and Qyzylorda oblasts into |
| # the fifth time belt and add Aktobe oblast to the list of regions not |
| # using extra hour ("decree time"), leaving Kazakhstan with only 2 time |
| # zones (+04/+05 and +06/+07). The changes were to be implemented |
| @@ -1721,14 +1762,14 @@ |
| # http://adilet.zan.kz/rus/docs/P040001059_ |
| # modified the 2000-11-23 act to remove exceptions from the "decree time" |
| # (leaving Kazakhstan in +05/+06 and +06/+07 zones), amended the |
| -# 2004-07-20 act to implement changes for Atyrau, West Kazakhstan, |
| -# Kostanay, Kyzylorda and Mangystau oblasts by not moving clocks |
| -# during the 2014 transition to "winter" time. |
| +# 2004-07-20 act to implement changes for Atyraū, West Kazakhstan, |
| +# Qostanay, Qyzylorda and Mangghystaū oblasts by not moving clocks |
| +# during the 2004 transition to "winter" time. |
| # |
| -# This means transition from +04/+05 to +05/+06 for Atyrau oblast (no |
| +# This means transition from +04/+05 to +05/+06 for Atyraū oblast (no |
| # zone currently), Asia/Oral, Asia/Aqtau and transition from +05/+06 to |
| -# +06/+07 for Kostanay oblast (Kostanay and Arkalyk, no zones currently) |
| -# and Asia/Qyzylorda on 2004-10-31 at 3:00....[*] |
| +# +06/+07 for Qostanay oblast (Qostanay and Arkalyk, no zones currently) |
| +# and Asia/Qyzylorda on 2004-10-31 at 3:00.... |
| # |
| # 10. Act of the Government of the Republic of Kazakhstan |
| # from 2005-03-15 No. 231 |
| @@ -1744,14 +1785,25 @@ |
| # Kazakh 1992-01-13 act appears to provide the same rules and 1992-03-27 |
| # act was to be enacted on the last Sunday of March 1992. |
| |
| -# From Paul Eggert (2016-04-15): |
| -# The tables below should reflect Stepan Golosunov's remarks above, |
| -# except for the items marked "[*]" which I haven't gotten to yet. |
| -# It looks like we will need new zones Asia/Atyrau and Asia/Qostanay |
| -# to handle changes from 1992 through 2004 that we did not previously |
| -# know about. |
| +# From Stepan Golosunov (2016-11-08): |
| +# Turgai reorganization should affect only southern part of Qostanay |
| +# oblast. Which should probably be separated into Asia/Arkalyk zone. |
| +# (There were also 1970, 1988 and 1990 Turgai oblast reorganizations |
| +# according to wikipedia.) |
| +# |
| +# [For Qostanay] http://www.ng.kz/gazeta/195/hranit/ |
| +# suggests that clocks were to be moved 40 minutes backwards on |
| +# 1920-01-01 to the fourth time belt. But I do not understand |
| +# how that could happen.... |
| +# |
| +# [For Atyrau and Oral] 1919 decree |
| +# (http://www.worldtimezone.com/dst_news/dst_news_russia-1919-02-08.html |
| +# and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in |
| +# the third time belt (before 1930 this means +03). |
| |
| -# |
| +# From Paul Eggert (2016-12-06): |
| +# The tables below reflect Golosunov's remarks, with exceptions as noted. |
| + |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| # |
| # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan |
| @@ -1764,6 +1816,8 @@ |
| 6:00 RussiaAsia +06/+07 2004 Oct 31 2:00s |
| 6:00 - +06 |
| # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY) |
| +# This currently includes Qostanay (aka Kostanay, Kustanay) (KZ-KUS); |
| +# see comments below. |
| Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2 |
| 4:00 - +04 1930 Jun 21 |
| 5:00 - +05 1981 Apr 1 |
| @@ -1775,7 +1829,21 @@ |
| 6:00 RussiaAsia +06/+07 1992 Mar 29 2:00s |
| 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s |
| 6:00 - +06 |
| -# Aqtobe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT) |
| +# The following zone is like Asia/Qyzylorda except for being one |
| +# hour earlier from 1991-09-29 to 1992-03-29. The 1991/2 rules for |
| +# Qostanay are unclear partly because of the 1997 Turgai |
| +# reorganization, so this zone is commented out for now. |
| +#Zone Asia/Qostanay 4:14:20 - LMT 1924 May 2 |
| +# 4:00 - +04 1930 Jun 21 |
| +# 5:00 - +05 1981 Apr 1 |
| +# 5:00 1:00 +06 1981 Oct 1 |
| +# 6:00 - +06 1982 Apr 1 |
| +# 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s |
| +# 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s |
| +# 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s |
| +# 6:00 - +06 |
| +# |
| +# Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT) |
| Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2 |
| 4:00 - +04 1930 Jun 21 |
| 5:00 - +05 1981 Apr 1 |
| @@ -1785,14 +1853,11 @@ |
| 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s |
| 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s |
| 5:00 - +05 |
| -# Qostanay (KZ-KUS) |
| - |
| -# Mangghystau (KZ-MAN) |
| +# Mangghystaū (KZ-MAN) |
| # Aqtau was not founded until 1963, but it represents an inhabited region, |
| # so include time stamps before 1963. |
| Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2 |
| 4:00 - +04 1930 Jun 21 |
| - 5:00 - +05 1963 |
| 5:00 - +05 1981 Oct 1 |
| 6:00 - +06 1982 Apr 1 |
| 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s |
| @@ -1800,12 +1865,22 @@ |
| 5:00 RussiaAsia +05/+06 1994 Sep 25 2:00s |
| 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s |
| 5:00 - +05 |
| - |
| +# Atyraū (KZ-ATY) is like Mangghystaū except it switched from |
| +# +04/+05 to +05/+06 in spring 1999, not fall 1994. |
| +Zone Asia/Atyrau 3:27:44 - LMT 1924 May 2 |
| + 3:00 - +03 1930 Jun 21 |
| + 5:00 - +05 1981 Oct 1 |
| + 6:00 - +06 1982 Apr 1 |
| + 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s |
| + 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s |
| + 5:00 RussiaAsia +05/+06 1999 Mar 28 2:00s |
| + 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s |
| + 5:00 - +05 |
| # West Kazakhstan (KZ-ZAP) |
| # From Paul Eggert (2016-03-18): |
| # The 1989 transition is from USSR act No. 227 (1989-03-14). |
| Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk |
| - 4:00 - +04 1930 Jun 21 |
| + 3:00 - +03 1930 Jun 21 |
| 5:00 - +05 1981 Apr 1 |
| 5:00 1:00 +06 1981 Oct 1 |
| 6:00 - +06 1982 Apr 1 |
| @@ -1851,9 +1926,9 @@ |
| # between 1987 and 1988 ... |
| |
| # From Sanghyuk Jung (2014-10-29): |
| -# http://mm.icann.org/pipermail/tz/2014-October/021830.html |
| +# https://mm.icann.org/pipermail/tz/2014-October/021830.html |
| # According to the Korean Wikipedia |
| -# http://ko.wikipedia.org/wiki/한국_표준시 |
| +# https://ko.wikipedia.org/wiki/한국_표준시 |
| # [oldid=12896437 2014-09-04 08:03 UTC] |
| # DST in Republic of Korea was as follows.... And I checked old |
| # newspapers in Korean, all articles correspond with data in Wikipedia. |
| @@ -1911,7 +1986,6 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 |
| 8:30 - KST 1912 Jan 1 |
| - 9:00 - JCST 1937 Oct 1 |
| 9:00 - JST 1945 Sep 8 |
| 9:00 - KST 1954 Mar 21 |
| 8:30 ROK K%sT 1961 Aug 10 |
| @@ -1918,7 +1992,6 @@ |
| 9:00 ROK K%sT |
| Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 |
| 8:30 - KST 1912 Jan 1 |
| - 9:00 - JCST 1937 Oct 1 |
| 9:00 - JST 1945 Aug 24 |
| 9:00 - KST 2015 Aug 15 00:00 |
| 8:30 - KST |
| @@ -1973,13 +2046,13 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 |
| 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. |
| - 7:00 - MALT 1933 Jan 1 # Malaya Time |
| - 7:00 0:20 MALST 1936 Jan 1 |
| - 7:20 - MALT 1941 Sep 1 |
| - 7:30 - MALT 1942 Feb 16 |
| - 9:00 - JST 1945 Sep 12 |
| - 7:30 - MALT 1982 Jan 1 |
| - 8:00 - MYT # Malaysia Time |
| + 7:00 - +07 1933 Jan 1 |
| + 7:00 0:20 +0720 1936 Jan 1 |
| + 7:20 - +0720 1941 Sep 1 |
| + 7:30 - +0730 1942 Feb 16 |
| + 9:00 - +09 1945 Sep 12 |
| + 7:30 - +0730 1982 Jan 1 |
| + 8:00 - +08 |
| # Sabah & Sarawak |
| # From Paul Eggert (2014-08-12): |
| # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 |
| @@ -1986,17 +2059,16 @@ |
| # and 1982 transition dates are from Mok Ly Yng. |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Kuching 7:21:20 - LMT 1926 Mar |
| - 7:30 - BORT 1933 # Borneo Time |
| - 8:00 NBorneo BOR%sT 1942 Feb 16 |
| - 9:00 - JST 1945 Sep 12 |
| - 8:00 - BORT 1982 Jan 1 |
| - 8:00 - MYT |
| + 7:30 - +0730 1933 |
| + 8:00 NBorneo +08/+0820 1942 Feb 16 |
| + 9:00 - +09 1945 Sep 12 |
| + 8:00 - +08 |
| |
| # Maldives |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Maldives 4:54:00 - LMT 1880 # Male |
| 4:54:00 - MMT 1960 # Male Mean Time |
| - 5:00 - MVT # Maldives Time |
| + 5:00 - +05 |
| |
| # Mongolia |
| |
| @@ -2078,7 +2150,7 @@ |
| # +08:00 instead. Different sources appear to disagree with the tz |
| # database on this, e.g.: |
| # |
| -# http://www.timeanddate.com/worldclock/city.html?n=1026 |
| +# https://www.timeanddate.com/worldclock/city.html?n=1026 |
| # http://www.worldtimeserver.com/current_time_in_MN.aspx |
| # |
| # both say GMT+08:00. |
| @@ -2123,6 +2195,10 @@ |
| # correction of 02:00 (in the previous edition) not being done correctly |
| # in the latest edition; so ignore it for now. |
| |
| +# From Ganbold Tsagaankhuu (2017-02-09): |
| +# Mongolian Government meeting has concluded today to cancel daylight |
| +# saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192 |
| + |
| Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S |
| Rule Mongol 1984 1998 - Sep lastSun 0:00 0 - |
| # IATA SSIM (1999-09) says Mongolia no longer observes DST. |
| @@ -2129,31 +2205,31 @@ |
| Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S |
| Rule Mongol 2001 2006 - Sep lastSat 2:00 0 - |
| Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S |
| -Rule Mongol 2015 max - Mar lastSat 2:00 1:00 S |
| -Rule Mongol 2015 max - Sep lastSat 0:00 0 - |
| +Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 S |
| +Rule Mongol 2015 2016 - Sep lastSat 0:00 0 - |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta |
| Zone Asia/Hovd 6:06:36 - LMT 1905 Aug |
| - 6:00 - HOVT 1978 # Hovd Time |
| - 7:00 Mongol HOV%sT |
| + 6:00 - +06 1978 |
| + 7:00 Mongol +07/+08 |
| # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga |
| Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug |
| - 7:00 - ULAT 1978 # Ulaanbaatar Time |
| - 8:00 Mongol ULA%sT |
| + 7:00 - +07 1978 |
| + 8:00 Mongol +08/+09 |
| # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan, |
| # Choybalsan, Sanbejse, Tchoibalsan |
| Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug |
| - 7:00 - ULAT 1978 |
| - 8:00 - ULAT 1983 Apr |
| - 9:00 Mongol CHO%sT 2008 Mar 31 # Choibalsan Time |
| - 8:00 Mongol CHO%sT |
| + 7:00 - +07 1978 |
| + 8:00 - +08 1983 Apr |
| + 9:00 Mongol +09/+10 2008 Mar 31 |
| + 8:00 Mongol +08/+09 |
| |
| # Nepal |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Kathmandu 5:41:16 - LMT 1920 |
| - 5:30 - IST 1986 |
| - 5:45 - NPT # Nepal Time |
| + 5:30 - +0530 1986 |
| + 5:45 - +0545 |
| |
| # Oman |
| # See Asia/Dubai. |
| @@ -2204,7 +2280,7 @@ |
| # help reduce load shedding by approving the closure of commercial centres at |
| # 9pm and moving clocks forward by one hour for the next three months. ...." |
| # |
| -# http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html |
| +# http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html |
| # http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4 |
| |
| # From Arthur David Olson (2008-05-19): |
| @@ -2270,7 +2346,7 @@ |
| # |
| # We have confirmed this year's end date with both with the Ministry of |
| # Water and Power and the Pakistan Electric Power Company: |
| -# http://www.timeanddate.com/news/time/pakistan-ends-dst09.html |
| +# https://www.timeanddate.com/news/time/pakistan-ends-dst09.html |
| |
| # From Christoph Göhre (2009-10-01): |
| # [T]he German Consulate General in Karachi reported me today that Pakistan |
| @@ -2302,10 +2378,10 @@ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Karachi 4:28:12 - LMT 1907 |
| - 5:30 - IST 1942 Sep |
| - 5:30 1:00 IST 1945 Oct 15 |
| - 5:30 - IST 1951 Sep 30 |
| - 5:00 - KART 1971 Mar 26 # Karachi Time |
| + 5:30 - +0530 1942 Sep |
| + 5:30 1:00 +0630 1945 Oct 15 |
| + 5:30 - +0530 1951 Sep 30 |
| + 5:00 - +05 1971 Mar 26 |
| 5:00 Pakistan PK%sT # Pakistan Time |
| |
| # Palestine |
| @@ -2452,7 +2528,7 @@ |
| # |
| # We are not sure if Gaza will do the same, last year they had a different |
| # end date, we will keep this page updated: |
| -# http://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html |
| +# https://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html |
| |
| # From Alexander Krivenyshev (2009-09-02): |
| # Seems that Gaza Strip will go back to Winter Time same date as West Bank. |
| @@ -2490,7 +2566,7 @@ |
| # the clocks were set back one hour at 2010-08-11 00:00:00 local time in |
| # Gaza and the West Bank. |
| # Some more background info: |
| -# http://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html |
| +# https://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html |
| |
| # From Steffen Thorsen (2011-08-26): |
| # Gaza and the West Bank did go back to standard time in the beginning of |
| @@ -2500,7 +2576,7 @@ |
| # |
| # http://www.maannews.net/eng/ViewDetails.aspx?ID=416217 |
| # Additional info: |
| -# http://www.timeanddate.com/news/time/palestine-dst-2011.html |
| +# https://www.timeanddate.com/news/time/palestine-dst-2011.html |
| |
| # From Alexander Krivenyshev (2011-08-27): |
| # According to the article in The Jerusalem Post: |
| @@ -2510,7 +2586,7 @@ |
| # The Hamas government said on Saturday that it won't observe summertime after |
| # the Muslim feast of Id al-Fitr, which begins on Tuesday..." |
| # ... |
| -# http://www.jpost.com/MiddleEast/Article.aspx?id=235650 |
| +# https://www.jpost.com/MiddleEast/Article.aspx?id=235650 |
| # http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html |
| # The rules for Egypt are stolen from the 'africa' file. |
| |
| @@ -2531,7 +2607,7 @@ |
| # http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html |
| # |
| # Our brief summary: |
| -# http://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html |
| +# https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html |
| |
| # From Steffen Thorsen (2013-03-26): |
| # The following news sources tells that Palestine will "start daylight saving |
| @@ -2551,11 +2627,11 @@ |
| |
| # From Steffen Thorsen (2015-03-03): |
| # Sources such as http://www.alquds.com/news/article/view/id/548257 |
| -# and http://www.raya.ps/ar/news/890705.html say Palestine areas will |
| +# and https://www.raya.ps/ar/news/890705.html say Palestine areas will |
| # start DST on 2015-03-28 00:00 which is one day later than expected. |
| # |
| # From Paul Eggert (2015-03-03): |
| -# http://www.timeanddate.com/time/change/west-bank/ramallah?year=2014 |
| +# https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014 |
| # says that the fall 2014 transition was Oct 23 at 24:00. |
| |
| # From Hannah Kreitem (2016-03-09): |
| @@ -2579,8 +2655,8 @@ |
| # |
| # From Paul Eggert (2016-10-19): |
| # It's also consistent with predictions in the following URLs today: |
| -# http://www.timeanddate.com/time/change/gaza-strip/gaza |
| -# http://www.timeanddate.com/time/change/west-bank/hebron |
| +# https://www.timeanddate.com/time/change/gaza-strip/gaza |
| +# https://www.timeanddate.com/time/change/west-bank/hebron |
| |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule EgyptAsia 1957 only - May 10 0:00 1:00 S |
| @@ -2616,7 +2692,7 @@ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Gaza 2:17:52 - LMT 1900 Oct |
| - 2:00 Zion EET 1948 May 15 |
| + 2:00 Zion EET/EEST 1948 May 15 |
| 2:00 EgyptAsia EE%sT 1967 Jun 5 |
| 2:00 Zion I%sT 1996 |
| 2:00 Jordan EE%sT 1999 |
| @@ -2629,7 +2705,7 @@ |
| 2:00 Palestine EE%sT |
| |
| Zone Asia/Hebron 2:20:23 - LMT 1900 Oct |
| - 2:00 Zion EET 1948 May 15 |
| + 2:00 Zion EET/EEST 1948 May 15 |
| 2:00 EgyptAsia EE%sT 1967 Jun 5 |
| 2:00 Zion I%sT 1996 |
| 2:00 Jordan EE%sT 1999 |
| @@ -2643,7 +2719,7 @@ |
| # Philippines, issued a proclamation announcing that 1844-12-30 was to |
| # be immediately followed by 1845-01-01; see R.H. van Gent's |
| # History of the International Date Line |
| -# http://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm |
| +# https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm |
| # The rest of the data entries are from Shanks & Pottenger. |
| |
| # From Jesper Nørgaard Welen (2006-04-26): |
| @@ -2670,15 +2746,15 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 |
| 8:04:00 - LMT 1899 May 11 |
| - 8:00 Phil PH%sT 1942 May |
| - 9:00 - JST 1944 Nov |
| - 8:00 Phil PH%sT |
| + 8:00 Phil +08/+09 1942 May |
| + 9:00 - +09 1944 Nov |
| + 8:00 Phil +08/+09 |
| |
| # Qatar |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha |
| - 4:00 - GST 1972 Jun |
| - 3:00 - AST |
| + 4:00 - +04 1972 Jun |
| + 3:00 - +03 |
| Link Asia/Qatar Asia/Bahrain |
| |
| # Saudi Arabia |
| @@ -2705,7 +2781,7 @@ |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 |
| - 3:00 - AST |
| + 3:00 - +03 |
| Link Asia/Riyadh Asia/Aden # Yemen |
| Link Asia/Riyadh Asia/Kuwait |
| |
| @@ -2715,14 +2791,13 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 |
| 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. |
| - 7:00 - MALT 1933 Jan 1 # Malaya Time |
| - 7:00 0:20 MALST 1936 Jan 1 |
| - 7:20 - MALT 1941 Sep 1 |
| - 7:30 - MALT 1942 Feb 16 |
| - 9:00 - JST 1945 Sep 12 |
| - 7:30 - MALT 1965 Aug 9 # independence |
| - 7:30 - SGT 1982 Jan 1 # Singapore Time |
| - 8:00 - SGT |
| + 7:00 - +07 1933 Jan 1 |
| + 7:00 0:20 +0720 1936 Jan 1 |
| + 7:20 - +0720 1941 Sep 1 |
| + 7:30 - +0730 1942 Feb 16 |
| + 9:00 - +09 1945 Sep 12 |
| + 7:30 - +0730 1982 Jan 1 |
| + 8:00 - +08 |
| |
| # Spratly Is |
| # no information |
| @@ -2781,8 +2856,8 @@ |
| Zone Asia/Colombo 5:19:24 - LMT 1880 |
| 5:19:32 - MMT 1906 # Moratuwa Mean Time |
| 5:30 - +0530 1942 Jan 5 |
| - 5:30 0:30 +0530/+06 1942 Sep |
| - 5:30 1:00 +0530/+0630 1945 Oct 16 2:00 |
| + 5:30 0:30 +06 1942 Sep |
| + 5:30 1:00 +0630 1945 Oct 16 2:00 |
| 5:30 - +0530 1996 May 25 0:00 |
| 6:30 - +0630 1996 Oct 26 0:30 |
| 6:00 - +06 2006 Apr 15 0:30 |
| @@ -2908,7 +2983,7 @@ |
| # We have not found any sources saying anything about when DST ends this year. |
| # |
| # Our summary |
| -# http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html |
| +# https://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html |
| |
| # From Steffen Thorsen (2009-10-27): |
| # The Syrian Arab News Network on 2009-09-29 reported that Syria will |
| @@ -2935,7 +3010,7 @@ |
| # http://www.sana.sy/ara/2/2012/03/26/408215.htm |
| # |
| # Our brief summary: |
| -# http://www.timeanddate.com/news/time/syria-dst-2012.html |
| +# https://www.timeanddate.com/news/time/syria-dst-2012.html |
| |
| # From Arthur David Olson (2012-03-27): |
| # Assume last Friday in March going forward XXX. |
| @@ -2964,7 +3039,7 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Bangkok 6:42:04 - LMT 1880 |
| 6:42:04 - BMT 1920 Apr # Bangkok Mean Time |
| - 7:00 - ICT |
| + 7:00 - +07 |
| Link Asia/Bangkok Asia/Phnom_Penh # Cambodia |
| Link Asia/Bangkok Asia/Vientiane # Laos |
| |
| @@ -2980,7 +3055,7 @@ |
| # United Arab Emirates |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Dubai 3:41:12 - LMT 1920 |
| - 4:00 - GST |
| + 4:00 - +04 |
| Link Asia/Dubai Asia/Muscat # Oman |
| |
| # Uzbekistan |
| @@ -3018,7 +3093,7 @@ |
| # is quoted verbatim in: |
| # http://www.thoigian.com.vn/?mPage=P80D01 |
| # is translated by Brian Inglis in: |
| -# http://mm.icann.org/pipermail/tz/2014-October/021654.html |
| +# https://mm.icann.org/pipermail/tz/2014-October/021654.html |
| # and is the basis for the information below. |
| # |
| # The 1906 transition was effective July 1 and standardized Indochina to |
| @@ -3053,15 +3128,15 @@ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 |
| - 7:06:30 - PLMT 1911 May 1 |
| - 7:00 - ICT 1942 Dec 31 23:00 |
| - 8:00 - IDT 1945 Mar 14 23:00 |
| - 9:00 - JST 1945 Sep 2 |
| - 7:00 - ICT 1947 Apr 1 |
| - 8:00 - IDT 1955 Jul 1 |
| - 7:00 - ICT 1959 Dec 31 23:00 |
| - 8:00 - IDT 1975 Jun 13 |
| - 7:00 - ICT |
| + 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT |
| + 7:00 - +07 1942 Dec 31 23:00 |
| + 8:00 - +08 1945 Mar 14 23:00 |
| + 9:00 - +09 1945 Sep 2 |
| + 7:00 - +07 1947 Apr 1 |
| + 8:00 - +08 1955 Jul 1 |
| + 7:00 - +07 1959 Dec 31 23:00 |
| + 8:00 - +08 1975 Jun 13 |
| + 7:00 - +07 |
| |
| # Yemen |
| # See Asia/Riyadh. |
| Index: contrib/tzdata/australasia |
| =================================================================== |
| --- contrib/tzdata/australasia (版本 324740) |
| +++ contrib/tzdata/australasia (版本 325322) |
| @@ -44,8 +44,8 @@ |
| 8:00 Aus AW%sT 1943 Jul |
| 8:00 AW AW%sT |
| Zone Australia/Eucla 8:35:28 - LMT 1895 Dec |
| - 8:45 Aus ACW%sT 1943 Jul |
| - 8:45 AW ACW%sT |
| + 8:45 Aus +0845/+0945 1943 Jul |
| + 8:45 AW +0845/+0945 |
| |
| # Queensland |
| # |
| @@ -212,7 +212,8 @@ |
| Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D |
| Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb |
| 10:00 - AEST 1981 Mar |
| - 10:30 LH LH%sT |
| + 10:30 LH +1030/+1130 1985 Jul |
| + 10:30 LH +1030/+11 |
| |
| # Australian miscellany |
| # |
| @@ -250,12 +251,12 @@ |
| 0 - -00 1948 Mar 25 |
| 10:00 Aus AE%sT 1967 |
| 10:00 AT AE%sT 2010 Apr 4 3:00 |
| - 11:00 - MIST # Macquarie I Standard Time |
| + 11:00 - +11 |
| |
| # Christmas |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Christmas 7:02:52 - LMT 1895 Feb |
| - 7:00 - CXT # Christmas Island Time |
| + 7:00 - +07 |
| |
| # Cocos (Keeling) Is |
| # These islands were ruled by the Ross family from about 1830 to 1978. |
| @@ -262,7 +263,7 @@ |
| # We don't know when standard time was introduced; for now, we guess 1900. |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Indian/Cocos 6:27:40 - LMT 1900 |
| - 6:30 - CCT # Cocos Islands Time |
| + 6:30 - +0630 |
| |
| |
| # Fiji |
| @@ -292,7 +293,7 @@ |
| # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=1096:3310-cabinet-approves-change-in-daylight-savings-dates&catid=49:cabinet-releases&Itemid=166 |
| # |
| # A bit more background info here: |
| -# http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html |
| +# https://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html |
| |
| # From Alexander Krivenyshev (2010-10-24): |
| # According to Radio Fiji and Fiji Times online, Fiji will end DST 3 |
| @@ -356,9 +357,12 @@ |
| # clocks go forward an hour at 2am to 3am.... Daylight Saving will |
| # end at 3.00am on Sunday 15th January 2017." |
| |
| -# From Paul Eggert (2016-10-03): |
| -# For now, guess DST from 02:00 the first Sunday in November to |
| -# 03:00 the third Sunday in January. Although ad hoc, it matches |
| +# From Paul Eggert (2017-08-21): |
| +# Dominic Fok writes (2017-08-20) that DST ends 2018-01-14, citing |
| +# Extraordinary Government of Fiji Gazette Supplement No. 21 (2017-08-27), |
| +# [Legal Notice No. 41] of an order of the previous day by J Usamate. |
| +# For now, guess DST from 02:00 the first Sunday in November to 03:00 |
| +# the first Sunday on or after January 14. Although ad hoc, it matches |
| # transitions since late 2014 and seems more likely to match future |
| # practice than guessing no DST. |
| |
| @@ -372,19 +376,19 @@ |
| Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 - |
| Rule Fiji 2014 only - Jan Sun>=18 2:00 0 - |
| Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S |
| -Rule Fiji 2015 max - Jan Sun>=15 3:00 0 - |
| +Rule Fiji 2015 max - Jan Sun>=14 3:00 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva |
| - 12:00 Fiji FJ%sT # Fiji Time |
| + 12:00 Fiji +12/+13 |
| |
| # French Polynesia |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea |
| - -9:00 - GAMT # Gambier Time |
| + -9:00 - -09 |
| Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct |
| - -9:30 - MART # Marquesas Time |
| + -9:30 - -0930 |
| Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete |
| - -10:00 - TAHT # Tahiti Time |
| + -10:00 - -10 |
| # Clipperton (near North America) is administered from French Polynesia; |
| # it is uninhabited. |
| |
| @@ -399,15 +403,15 @@ |
| # Kiribati |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki |
| - 12:00 - GILT # Gilbert Is Time |
| + 12:00 - +12 |
| Zone Pacific/Enderbury -11:24:20 - LMT 1901 |
| - -12:00 - PHOT 1979 Oct # Phoenix Is Time |
| - -11:00 - PHOT 1995 |
| - 13:00 - PHOT |
| + -12:00 - -12 1979 Oct |
| + -11:00 - -11 1995 |
| + 13:00 - +13 |
| Zone Pacific/Kiritimati -10:29:20 - LMT 1901 |
| - -10:40 - LINT 1979 Oct # Line Is Time |
| - -10:00 - LINT 1995 |
| - 14:00 - LINT |
| + -10:40 - -1040 1979 Oct |
| + -10:00 - -10 1995 |
| + 14:00 - +14 |
| |
| # N Mariana Is |
| # See Pacific/Guam. |
| @@ -415,31 +419,31 @@ |
| # Marshall Is |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Majuro 11:24:48 - LMT 1901 |
| - 11:00 - MHT 1969 Oct # Marshall Islands Time |
| - 12:00 - MHT |
| + 11:00 - +11 1969 Oct |
| + 12:00 - +12 |
| Zone Pacific/Kwajalein 11:09:20 - LMT 1901 |
| - 11:00 - MHT 1969 Oct |
| - -12:00 - KWAT 1993 Aug 20 # Kwajalein Time |
| - 12:00 - MHT |
| + 11:00 - +11 1969 Oct |
| + -12:00 - -12 1993 Aug 20 |
| + 12:00 - +12 |
| |
| # Micronesia |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Chuuk 10:07:08 - LMT 1901 |
| - 10:00 - CHUT # Chuuk Time |
| + 10:00 - +10 |
| Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia |
| - 11:00 - PONT # Pohnpei Time |
| + 11:00 - +11 |
| Zone Pacific/Kosrae 10:51:56 - LMT 1901 |
| - 11:00 - KOST 1969 Oct # Kosrae Time |
| - 12:00 - KOST 1999 |
| - 11:00 - KOST |
| + 11:00 - +11 1969 Oct |
| + 12:00 - +12 1999 |
| + 11:00 - +11 |
| |
| # Nauru |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe |
| - 11:30 - NRT 1942 Mar 15 # Nauru Time |
| - 9:00 - JST 1944 Aug 15 |
| - 11:30 - NRT 1979 May |
| - 12:00 - NRT |
| + 11:30 - +1130 1942 Mar 15 |
| + 9:00 - +09 1944 Aug 15 |
| + 11:30 - +1130 1979 May |
| + 12:00 - +12 |
| |
| # New Caledonia |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| @@ -450,7 +454,7 @@ |
| Rule NC 1997 only - Mar 2 2:00s 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa |
| - 11:00 NC NC%sT |
| + 11:00 NC +11/+12 |
| |
| |
| ############################################################################### |
| @@ -491,8 +495,8 @@ |
| 11:30 NZ NZ%sT 1946 Jan 1 |
| 12:00 NZ NZ%sT |
| Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2 |
| - 12:15 - CHAST 1946 Jan 1 |
| - 12:45 Chatham CHA%sT |
| + 12:15 - +1215 1946 Jan 1 |
| + 12:45 Chatham +1245/+1345 |
| |
| Link Pacific/Auckland Antarctica/McMurdo |
| |
| @@ -514,8 +518,8 @@ |
| Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua |
| - -10:30 - CKT 1978 Nov 12 # Cook Is Time |
| - -10:00 Cook CK%sT |
| + -10:30 - -1030 1978 Nov 12 |
| + -10:00 Cook -10/-0930 |
| |
| ############################################################################### |
| |
| @@ -523,29 +527,29 @@ |
| # Niue |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi |
| - -11:20 - NUT 1951 # Niue Time |
| - -11:30 - NUT 1978 Oct 1 |
| - -11:00 - NUT |
| + -11:20 - -1120 1951 |
| + -11:30 - -1130 1978 Oct 1 |
| + -11:00 - -11 |
| |
| # Norfolk |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston |
| - 11:12 - NMT 1951 # Norfolk Mean Time |
| - 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T. |
| - 11:30 1:00 NFST 1975 Mar 2 02:00 |
| - 11:30 - NFT 2015 Oct 4 02:00 |
| - 11:00 - NFT |
| + 11:12 - +1112 1951 |
| + 11:30 - +1130 1974 Oct 27 02:00 |
| + 11:30 1:00 +1230 1975 Mar 2 02:00 |
| + 11:30 - +1130 2015 Oct 4 02:00 |
| + 11:00 - +11 |
| |
| # Palau (Belau) |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror |
| - 9:00 - PWT # Palau Time |
| + 9:00 - +09 |
| |
| # Papua New Guinea |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 |
| 9:48:32 - PMMT 1895 # Port Moresby Mean Time |
| - 10:00 - PGT # Papua New Guinea Time |
| + 10:00 - +10 |
| # |
| # From Paul Eggert (2014-10-13): |
| # Base the Bougainville entry on the Arawa-Kieta region, which appears to have |
| @@ -556,32 +560,30 @@ |
| # The World War II entries below are instead based on Arawa-Kieta. |
| # The Japanese occupied Kieta in July 1942, |
| # according to the Pacific War Online Encyclopedia |
| -# http://pwencycl.kgbudge.com/B/o/Bougainville.htm |
| +# https://pwencycl.kgbudge.com/B/o/Bougainville.htm |
| # and seem to have controlled it until their 1945-08-21 surrender. |
| # |
| # The Autonomous Region of Bougainville switched from UT +10 to +11 |
| -# on 2014-12-28 at 02:00. They call +11 "Bougainville Standard Time"; |
| -# abbreviate this as BST. See: |
| +# on 2014-12-28 at 02:00. They call +11 "Bougainville Standard Time". |
| +# See: |
| # http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/ |
| # |
| Zone Pacific/Bougainville 10:22:16 - LMT 1880 |
| 9:48:32 - PMMT 1895 |
| - 10:00 - PGT 1942 Jul |
| - 9:00 - JST 1945 Aug 21 |
| - 10:00 - PGT 2014 Dec 28 2:00 |
| - 11:00 - BST |
| + 10:00 - +10 1942 Jul |
| + 9:00 - +09 1945 Aug 21 |
| + 10:00 - +10 2014 Dec 28 2:00 |
| + 11:00 - +11 |
| |
| # Pitcairn |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown |
| - -8:30 - PNT 1998 Apr 27 0:00 |
| - -8:00 - PST # Pitcairn Standard Time |
| + -8:30 - -0830 1998 Apr 27 0:00 |
| + -8:00 - -08 |
| |
| # American Samoa |
| -Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5 |
| +Zone Pacific/Pago_Pago 12:37:12 - LMT 1892 Jul 5 |
| -11:22:48 - LMT 1911 |
| - -11:00 - NST 1967 Apr # N=Nome |
| - -11:00 - BST 1983 Nov 30 # B=Bering |
| -11:00 - SST # S=Samoa |
| Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands |
| |
| @@ -596,7 +598,7 @@ |
| # Sunday of April 2011." |
| # |
| # Background info: |
| -# http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html |
| +# https://www.timeanddate.com/news/time/samoa-dst-plan-2009.html |
| # |
| # Samoa's Daylight Saving Time Act 2009 is available here, but does not |
| # contain any dates: |
| @@ -660,19 +662,19 @@ |
| Rule WS 2012 max - Apr Sun>=1 4:00 0 S |
| Rule WS 2012 max - Sep lastSun 3:00 1 D |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| -Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 |
| +Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5 |
| -11:26:56 - LMT 1911 |
| - -11:30 - WSST 1950 |
| - -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa |
| - 13:00 WS WS%sT |
| + -11:30 - -1130 1950 |
| + -11:00 WS -11/-10 2011 Dec 29 24:00 |
| + 13:00 WS +13/+14 |
| |
| # Solomon Is |
| # excludes Bougainville, for which see Papua New Guinea |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara |
| - 11:00 - SBT # Solomon Is Time |
| + 11:00 - +11 |
| |
| -# Tokelau Is |
| +# Tokelau |
| # |
| # From Gwillim Law (2011-12-29) |
| # A correspondent informed me that Tokelau, like Samoa, will be skipping |
| @@ -687,14 +689,14 @@ |
| # From Paul Eggert (2012-07-25) |
| # A Google Books snippet of Appendix to the Journals of the House of |
| # Representatives of New Zealand, Session 1948, |
| -# <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau |
| +# <https://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau |
| # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger |
| # are off by an hour starting in 1901. |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Fakaofo -11:24:56 - LMT 1901 |
| - -11:00 - TKT 2011 Dec 30 # Tokelau Time |
| - 13:00 - TKT |
| + -11:00 - -11 2011 Dec 30 |
| + 13:00 - +13 |
| |
| # Tonga |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| @@ -702,8 +704,8 @@ |
| Rule Tonga 2000 only - Mar 19 2:00s 0 - |
| Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S |
| Rule Tonga 2001 2002 - Jan lastSun 2:00 0 - |
| -Rule Tonga 2016 max - Nov Sun>=1 2:00 1:00 S |
| -Rule Tonga 2017 max - Jan Sun>=15 3:00 0 - |
| +Rule Tonga 2016 only - Nov Sun>=1 2:00 1:00 S |
| +Rule Tonga 2017 only - Jan Sun>=15 3:00 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Tongatapu 12:19:20 - LMT 1901 |
| 12:20 - +1220 1941 |
| @@ -713,7 +715,7 @@ |
| # Tuvalu |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Funafuti 11:56:52 - LMT 1901 |
| - 12:00 - TVT # Tuvalu Time |
| + 12:00 - +12 |
| |
| |
| # US minor outlying islands |
| @@ -737,10 +739,11 @@ |
| |
| # Johnston |
| # |
| -# From Paul Eggert (2014-03-11): |
| +# From Paul Eggert (2017-02-10): |
| # Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind. |
| # Details are uncertain. We have no data for Johnston after 1970, so |
| -# treat it like Hawaii for now. |
| +# treat it like Hawaii for now. Since Johnston is now uninhabited, |
| +# its link to Pacific/Honolulu is in the 'backward' file. |
| # |
| # In his memoirs of June 6th to October 4, 1945 |
| # <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes, |
| @@ -756,12 +759,10 @@ |
| # Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin, |
| # "The United States High-Altitude Test Experience: A Review Emphasizing the |
| # Impact on the Environment", Los Alamos LA-6405, Oct 1976. |
| -# http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf |
| +# https://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf |
| # See the table on page 4 where he lists GMT and local times for the tests; a |
| # footnote for the JI tests reads that local time is "JI time = Hawaii Time |
| # Minus One Hour". |
| -# |
| -# See 'northamerica' for Pacific/Johnston. |
| |
| # Kingman |
| # uninhabited |
| @@ -775,7 +776,7 @@ |
| # Wake |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Wake 11:06:28 - LMT 1901 |
| - 12:00 - WAKT # Wake Time |
| + 12:00 - +12 |
| |
| |
| # Vanuatu |
| @@ -788,12 +789,12 @@ |
| Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila |
| - 11:00 Vanuatu VU%sT # Vanuatu Time |
| + 11:00 Vanuatu +11/+12 |
| |
| # Wallis and Futuna |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Pacific/Wallis 12:15:20 - LMT 1901 |
| - 12:00 - WFT # Wallis & Futuna Time |
| + 12:00 - +12 |
| |
| ############################################################################### |
| |
| @@ -804,7 +805,7 @@ |
| # tz@iana.org for general use in the future). For more, please see |
| # the file CONTRIBUTING in the tz distribution. |
| |
| -# From Paul Eggert (2014-10-31): |
| +# From Paul Eggert (2017-02-10): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -811,8 +812,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -824,33 +825,24 @@ |
| # |
| # For data circa 1899, a common source is: |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. |
| -# http://www.jstor.org/stable/1774359 |
| +# https://www.jstor.org/stable/1774359 |
| # |
| # A reliable and entertaining source about time zones is |
| # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). |
| # |
| -# I invented the abbreviations marked '*' in the following table; |
| -# the rest are from earlier versions of this file, or from other sources. |
| +# The following abbreviations are from other sources. |
| # Corrections are welcome! |
| # std dst |
| # LMT Local Mean Time |
| # 8:00 AWST AWDT Western Australia |
| -# 8:45 ACWST ACWDT Central Western Australia* |
| -# 9:00 JST Japan |
| # 9:30 ACST ACDT Central Australia |
| # 10:00 AEST AEDT Eastern Australia |
| +# 10:00 GST Guam through 2000 |
| # 10:00 ChST Chamorro |
| -# 10:30 LHST LHDT Lord Howe* |
| -# 11:00 BST Bougainville* |
| # 11:30 NZMT NZST New Zealand through 1945 |
| # 12:00 NZST NZDT New Zealand 1946-present |
| -# 12:15 CHAST Chatham through 1945* |
| -# 12:45 CHAST CHADT Chatham 1946-present* |
| -# 13:00 WSST WSDT (western) Samoa 2011-present* |
| -# -11:30 WSST Western Samoa through 1950* |
| # -11:00 SST Samoa |
| # -10:00 HST Hawaii |
| -# - 8:00 PST Pitcairn* |
| # |
| # See the 'northamerica' file for Hawaii. |
| # See the 'southamerica' file for Easter I and the Galápagos Is. |
| @@ -980,7 +972,7 @@ |
| # AEST ACST AWST AEDT ACDT |
| # |
| # Parliamentary Library (2008-11-10) |
| -# http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf |
| +# https://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf |
| # EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used |
| # |
| # The Transport Safety Bureau has an extensive series of accident reports, |
| @@ -1016,13 +1008,13 @@ |
| # |
| # NSW (including LHI and Broken Hill): |
| # Standard Time Act 1987 (updated 1995-04-04) |
| -# http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html |
| +# https://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html |
| # ACT |
| # Standard Time and Summer Time Act 1972 |
| -# http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html |
| +# https://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html |
| # SA |
| # Standard Time Act, 1898 |
| -# http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html |
| +# https://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html |
| |
| # From David Grosz (2005-06-13): |
| # It was announced last week that Daylight Saving would be extended by |
| @@ -1317,7 +1309,7 @@ |
| # http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm |
| # (1999-07-22). For now, we'll wait to see if this really happens. |
| # |
| -# Victoria will following NSW. See: |
| +# Victoria will follow NSW. See: |
| # Vic to extend daylight saving (1999-07-28) |
| # http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm |
| # |
| @@ -1420,7 +1412,7 @@ |
| # the ACT for all 52 weeks of the year... |
| # |
| # We have a wrap-up here: |
| -# http://www.timeanddate.com/news/time/south-australia-extends-dst.html |
| +# https://www.timeanddate.com/news/time/south-australia-extends-dst.html |
| ############################################################################### |
| |
| # New Zealand |
| @@ -1474,7 +1466,7 @@ |
| # From Paul Eggert (2014-07-14): |
| # Chatham Island time was formally standardized on 1957-01-01 by |
| # New Zealand's Standard Time Amendment Act 1956 (1956-10-26). |
| -# http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf |
| +# https://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf |
| # According to Google Books snippet view, a speaker in the New Zealand |
| # parliamentary debates in 1956 said "Clause 78 makes provision for standard |
| # time in the Chatham Islands. The time there is 45 minutes in advance of New |
| @@ -1589,7 +1581,7 @@ |
| # the Norfolk Island Museum and the Australian Bureau of Meteorology's |
| # Norfolk Island station, and found no record of Norfolk observing DST |
| # other than in 1974/5. See: |
| -# http://www.timeanddate.com/time/australia/norfolk-island.html |
| +# https://www.timeanddate.com/time/australia/norfolk-island.html |
| |
| # Pitcairn |
| |
| @@ -1617,11 +1609,13 @@ |
| |
| # (Western) Samoa and American Samoa |
| |
| -# Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald) |
| -# that in 1879 the King of Samoa decided to change |
| +# Howse writes (p 153) that after the 1879 standardization on Antipodean |
| +# time by the British governor of Fiji, the King of Samoa decided to change |
| # "the date in his kingdom from the Antipodean to the American system, |
| # ordaining - by a masterpiece of diplomatic flattery - that |
| # the Fourth of July should be celebrated twice in that year." |
| +# This happened in 1892, according to the Evening News (Sydney) of 1892-07-20. |
| +# https://www.staff.science.uu.nl/~gent0113/idl/idl.htm |
| |
| # Although Shanks & Pottenger says they both switched to UT -11:30 |
| # in 1911, and to -11 in 1950. many earlier sources give -11 |
| @@ -1632,6 +1626,7 @@ |
| # day in 2011. Assume also that the Samoas follow the US and New |
| # Zealand's "ST"/"DT" style of daylight-saving abbreviations. |
| |
| + |
| # Tonga |
| |
| # From Paul Eggert (1996-01-22): |
| @@ -1726,6 +1721,15 @@ |
| # Assume Tonga will observe DST from the first Sunday in November at 02:00 |
| # through the third Sunday in January at 03:00, like Fiji, for now. |
| |
| +# From David Wade (2017-10-18): |
| +# In August government was disolved by the King. The current prime minister |
| +# continued in office in care taker mode. It is easy to see that few |
| +# decisions will be made until elections 16th November. |
| +# |
| +# From Paul Eggert (2017-10-18): |
| +# For now, guess that DST is discontinued. That's what the IATA is guessing. |
| + |
| + |
| # Wake |
| |
| # From Vernice Anderson, Personal Secretary to Philip Jessup, |
| @@ -1738,7 +1742,7 @@ |
| # making calculation of time in Washington difficult if not almost |
| # impossible. |
| # |
| -# http://www.trumanlibrary.org/wake/meeting.htm |
| +# https://www.trumanlibrary.org/oralhist/andrsonv.htm |
| |
| # From Paul Eggert (2003-03-23): |
| # We have no other report of DST in Wake Island, so omit this info for now. |
| @@ -1766,7 +1770,7 @@ |
| # an international standard, there are some places on the high seas where the |
| # correct date is ambiguous. |
| |
| -# From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31): |
| +# From Wikipedia <https://en.wikipedia.org/wiki/Time_zone> (2005-08-31): |
| # Before 1920, all ships kept local apparent time on the high seas by setting |
| # their clocks at night or at the morning sight so that, given the ship's |
| # speed and direction, it would be 12 o'clock when the Sun crossed the ship's |
| Index: contrib/tzdata/backward |
| =================================================================== |
| --- contrib/tzdata/backward (版本 324740) |
| +++ contrib/tzdata/backward (版本 325322) |
| @@ -61,7 +61,9 @@ |
| Link America/Manaus Brazil/West |
| Link America/Halifax Canada/Atlantic |
| Link America/Winnipeg Canada/Central |
| -Link America/Regina Canada/East-Saskatchewan |
| +# This line is commented out, as the name exceeded the 14-character limit |
| +# and was an unused misnomer. |
| +#Link America/Regina Canada/East-Saskatchewan |
| Link America/Toronto Canada/Eastern |
| Link America/Edmonton Canada/Mountain |
| Link America/St_Johns Canada/Newfoundland |
| @@ -96,6 +98,7 @@ |
| Link Pacific/Chatham NZ-CHAT |
| Link America/Denver Navajo |
| Link Asia/Shanghai PRC |
| +Link Pacific/Honolulu Pacific/Johnston |
| Link Pacific/Pohnpei Pacific/Ponape |
| Link Pacific/Pago_Pago Pacific/Samoa |
| Link Pacific/Chuuk Pacific/Truk |
| Index: contrib/tzdata/backzone |
| =================================================================== |
| --- contrib/tzdata/backzone (版本 324740) |
| +++ contrib/tzdata/backzone (版本 325322) |
| @@ -65,7 +65,7 @@ |
| # Mali (southern) |
| Zone Africa/Bamako -0:32:00 - LMT 1912 |
| 0:00 - GMT 1934 Feb 26 |
| - -1:00 - WAT 1960 Jun 20 |
| + -1:00 - -01 1960 Jun 20 |
| 0:00 - GMT |
| |
| # Central African Republic |
| @@ -75,7 +75,7 @@ |
| # Gambia |
| Zone Africa/Banjul -1:06:36 - LMT 1912 |
| -1:06:36 - BMT 1935 # Banjul Mean Time |
| - -1:00 - WAT 1964 |
| + -1:00 - -01 1964 |
| 0:00 - GMT |
| |
| # Malawi |
| @@ -93,18 +93,18 @@ |
| # Guinea |
| Zone Africa/Conakry -0:54:52 - LMT 1912 |
| 0:00 - GMT 1934 Feb 26 |
| - -1:00 - WAT 1960 |
| + -1:00 - -01 1960 |
| 0:00 - GMT |
| |
| # Senegal |
| Zone Africa/Dakar -1:09:44 - LMT 1912 |
| - -1:00 - WAT 1941 Jun |
| + -1:00 - -01 1941 Jun |
| 0:00 - GMT |
| |
| # Tanzania |
| Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931 |
| 3:00 - EAT 1948 |
| - 2:45 - BEAUT 1961 |
| + 2:45 - +0245 1961 |
| 3:00 - EAT |
| |
| # Djibouti |
| @@ -122,14 +122,14 @@ |
| # The International Hydrographic Bulletin, 1932-33, p 63 says that |
| # Sierra Leone would advance its clocks by 20 minutes on 1933-10-01. |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST |
| -Rule SL 1935 1942 - Oct 1 0:00 0 WAT |
| -Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST |
| +Rule SL 1935 1942 - Jun 1 0:00 0:40 -0020 |
| +Rule SL 1935 1942 - Oct 1 0:00 0 -01 |
| +Rule SL 1957 1962 - Jun 1 0:00 1:00 +01 |
| Rule SL 1957 1962 - Sep 1 0:00 0 GMT |
| Zone Africa/Freetown -0:53:00 - LMT 1882 |
| -0:53:00 - FMT 1913 Jun # Freetown Mean Time |
| -1:00 SL %s 1957 |
| - 0:00 SL %s |
| + 0:00 SL GMT/+01 |
| |
| # Botswana |
| # From Paul Eggert (2013-02-21): |
| @@ -153,8 +153,8 @@ |
| # Uganda |
| Zone Africa/Kampala 2:09:40 - LMT 1928 Jul |
| 3:00 - EAT 1930 |
| - 2:30 - BEAT 1948 |
| - 2:45 - BEAUT 1957 |
| + 2:30 - +0230 1948 |
| + 2:45 - +0245 1957 |
| 3:00 - EAT |
| |
| # Rwanda |
| @@ -177,11 +177,11 @@ |
| # |
| # Shanks gives 1911-05-26 for the transition to WAT, |
| # evidently confusing the date of the Portuguese decree |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| # with the date that it took effect, namely 1912-01-01. |
| # |
| Zone Africa/Luanda 0:52:56 - LMT 1892 |
| - 0:52:04 - AOT 1912 Jan 1 # Angola Time |
| + 0:52:04 - LMT 1912 Jan 1 # Luanda Mean Time? |
| 1:00 - WAT |
| |
| # Democratic Republic of the Congo (east) |
| @@ -216,12 +216,12 @@ |
| # Somalia |
| Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov |
| 3:00 - EAT 1931 |
| - 2:30 - BEAT 1957 |
| + 2:30 - +0230 1957 |
| 3:00 - EAT |
| |
| # Niger |
| Zone Africa/Niamey 0:08:28 - LMT 1912 |
| - -1:00 - WAT 1934 Feb 26 |
| + -1:00 - -01 1934 Feb 26 |
| 0:00 - GMT 1960 |
| 1:00 - WAT |
| |
| @@ -228,7 +228,7 @@ |
| # Mauritania |
| Zone Africa/Nouakchott -1:03:48 - LMT 1912 |
| 0:00 - GMT 1934 Feb 26 |
| - -1:00 - WAT 1960 Nov 28 |
| + -1:00 - -01 1960 Nov 28 |
| 0:00 - GMT |
| |
| # Burkina Faso |
| @@ -264,19 +264,19 @@ |
| # The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit. |
| Zone America/Argentina/ComodRivadavia -4:30:00 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 3 |
| - -4:00 - WART 1991 Oct 20 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 Jun 1 |
| - -4:00 - WART 2004 Jun 20 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 3 |
| + -4:00 - -04 1991 Oct 20 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 Jun 1 |
| + -4:00 - -04 2004 Jun 20 |
| + -3:00 - -03 |
| |
| # Aruba |
| Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad |
| - -4:30 - ANT 1965 # Netherlands Antilles Time |
| + -4:30 - -0430 1965 |
| -4:00 - AST |
| |
| # Cayman Is |
| @@ -365,12 +365,12 @@ |
| # Formosa (FM), La Pampa (LP), Chubut (CH) |
| Zone America/Rosario -4:02:40 - LMT 1894 Nov |
| -4:16:44 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Jul |
| - -3:00 - ART 1999 Oct 3 0:00 |
| - -4:00 Arg AR%sT 2000 Mar 3 0:00 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Jul |
| + -3:00 - -03 1999 Oct 3 0:00 |
| + -4:00 Arg -04/-03 2000 Mar 3 0:00 |
| + -3:00 - -03 |
| |
| # St Kitts-Nevis |
| Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre |
| @@ -403,12 +403,12 @@ |
| # Milne says 2:59:54 was the meridian of the saluting battery at Aden, |
| # and that Yemen was at 1:55:56, the meridian of the Hagia Sophia. |
| Zone Asia/Aden 2:59:54 - LMT 1950 |
| - 3:00 - AST |
| + 3:00 - +03 |
| |
| # Bahrain |
| Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah |
| - 4:00 - GST 1972 Jun |
| - 3:00 - AST |
| + 4:00 - +04 1972 Jun |
| + 3:00 - +03 |
| |
| # India |
| # |
| @@ -431,7 +431,7 @@ |
| # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing, |
| # Yangchun, Yangjiang, Yu'nan, and Yunfu. |
| Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking |
| - 7:00 - LONT 1980 May # Long-shu Time |
| + 7:00 - +07 1980 May |
| 8:00 PRC C%sT |
| Link Asia/Chongqing Asia/Chungking |
| |
| @@ -442,43 +442,43 @@ |
| # October 1954, with exact date and time unspecified. |
| Zone Asia/Hanoi 7:03:24 - LMT 1906 Jul 1 |
| 7:06:30 - PLMT 1911 May 1 |
| - 7:00 - ICT 1942 Dec 31 23:00 |
| - 8:00 - IDT 1945 Mar 14 23:00 |
| - 9:00 - JST 1945 Sep 2 |
| - 7:00 - ICT 1947 Apr 1 |
| - 8:00 - IDT 1954 Oct |
| - 7:00 - ICT |
| + 7:00 - +07 1942 Dec 31 23:00 |
| + 8:00 - +08 1945 Mar 14 23:00 |
| + 9:00 - +09 1945 Sep 2 |
| + 7:00 - +07 1947 Apr 1 |
| + 8:00 - +08 1954 Oct |
| + 7:00 - +07 |
| |
| # China |
| # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) |
| # Heilongjiang (except Mohe county), Jilin |
| Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin |
| - 8:30 - CHAT 1932 Mar # Changbai Time |
| + 8:30 - +0830 1932 Mar |
| 8:00 - CST 1940 |
| - 9:00 - CHAT 1966 May |
| - 8:30 - CHAT 1980 May |
| + 9:00 - +09 1966 May |
| + 8:30 - +0830 1980 May |
| 8:00 PRC C%sT |
| |
| # far west China |
| Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar |
| - 5:30 - KAST 1940 # Kashgar Time |
| - 5:00 - KAST 1980 May |
| + 5:30 - +0530 1940 |
| + 5:00 - +05 1980 May |
| 8:00 PRC C%sT |
| |
| # Kuwait |
| Zone Asia/Kuwait 3:11:56 - LMT 1950 |
| - 3:00 - AST |
| + 3:00 - +03 |
| |
| |
| # Oman |
| # Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory. |
| Zone Asia/Muscat 3:54:24 - LMT 1920 |
| - 4:00 - GST |
| + 4:00 - +04 |
| |
| # India |
| # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne: |
| # According to a Portuguese decree (1911-05-26) |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| # Portuguese India switched to UT +05 on 1912-01-01. |
| #Zone Asia/Panaji [not enough info to complete] |
| |
| @@ -491,12 +491,12 @@ |
| # transitions there. |
| Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1 |
| 7:06:30 - PLMT 1911 May 1 |
| - 7:00 - ICT 1942 Dec 31 23:00 |
| - 8:00 - IDT 1945 Mar 14 23:00 |
| - 9:00 - JST 1945 Sep 2 |
| - 7:00 - ICT 1947 Apr 1 |
| - 8:00 - IDT 1953 Nov 9 |
| - 7:00 - ICT |
| + 7:00 - +07 1942 Dec 31 23:00 |
| + 8:00 - +08 1945 Mar 14 23:00 |
| + 9:00 - +09 1945 Sep 2 |
| + 7:00 - +07 1947 Apr 1 |
| + 8:00 - +08 1953 Nov 9 |
| + 7:00 - +07 |
| |
| # Israel |
| Zone Asia/Tel_Aviv 2:19:04 - LMT 1880 |
| @@ -511,16 +511,16 @@ |
| # this is probably wrong but it's better than guessing no transition. |
| Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1 |
| 7:06:30 - PLMT 1911 May 1 |
| - 7:00 - ICT 1942 Dec 31 23:00 |
| - 8:00 - IDT 1945 Mar 14 23:00 |
| - 9:00 - JST 1945 Sep 2 |
| - 7:00 - ICT 1947 Apr 1 |
| - 8:00 - IDT 1955 Apr 15 |
| - 7:00 - ICT |
| + 7:00 - +07 1942 Dec 31 23:00 |
| + 8:00 - +08 1945 Mar 14 23:00 |
| + 9:00 - +09 1945 Sep 2 |
| + 7:00 - +07 1947 Apr 1 |
| + 8:00 - +08 1955 Apr 15 |
| + 7:00 - +07 |
| |
| # Jan Mayen |
| # From Whitman: |
| -Zone Atlantic/Jan_Mayen -1:00 - EGT |
| +Zone Atlantic/Jan_Mayen -1:00 - -01 |
| |
| # St Helena |
| Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown |
| @@ -540,10 +540,10 @@ |
| |
| # Guernsey |
| # Data from Joseph S. Myers |
| -# http://mm.icann.org/pipermail/tz/2013-September/019883.html |
| +# https://mm.icann.org/pipermail/tz/2013-September/019883.html |
| # References to be added |
| -# LMT Location - 49.27N -2.33E - St.Peter Port |
| -Zone Europe/Guernsey -0:09:19 - LMT 1913 Jun 18 |
| +# LMT is for Town Church, St. Peter Port, 49 degrees 27'17"N 2 degrees 32'10"W |
| +Zone Europe/Guernsey -0:10:09 - LMT 1913 Jun 18 |
| 0:00 GB-Eire %s 1940 Jul 2 |
| 1:00 C-Eur CE%sT 1945 May 8 |
| 0:00 GB-Eire %s 1968 Oct 27 |
| @@ -555,11 +555,11 @@ |
| # |
| # From Lester Caine (2013-09-04): |
| # The Isle of Man legislation is now on-line at |
| -# <http://www.legislation.gov.im>, starting with the original Statutory |
| +# <https://www.legislation.gov.im>, starting with the original Statutory |
| # Time Act in 1883 and including additional confirmation of some of |
| # the dates of the 'Summer Time' orders originating at |
| # Westminster. There is a little uncertainty as to the starting date |
| -# of the first summer time in 1916 which may have be announced a |
| +# of the first summer time in 1916 which may have been announced a |
| # couple of days late. There is still a substantial number of |
| # documents to work through, but it is thought that every GB change |
| # was also implemented on the island. |
| @@ -574,10 +574,10 @@ |
| |
| # Jersey |
| # Data from Joseph S. Myers |
| -# http://mm.icann.org/pipermail/tz/2013-September/019883.html |
| +# https://mm.icann.org/pipermail/tz/2013-September/019883.html |
| # References to be added |
| -# LMT Location - 49.187N -2.107E - St. Helier |
| -Zone Europe/Jersey -0:08:25 - LMT 1898 Jun 11 16:00u |
| +# LMT is for Parish Church, St. Helier, 49 degrees 11'0.57"N 2 degrees 6'24.33"W |
| +Zone Europe/Jersey -0:08:26 - LMT 1898 Jun 11 16:00u |
| 0:00 GB-Eire %s 1940 Jul 2 |
| 1:00 C-Eur CE%sT 1945 May 8 |
| 0:00 GB-Eire %s 1968 Oct 27 |
| @@ -663,15 +663,13 @@ |
| # " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A " |
| # |
| Zone Pacific/Midway -11:49:28 - LMT 1901 |
| - -11:00 - NST 1956 Jun 3 |
| - -11:00 1:00 NDT 1956 Sep 2 |
| - -11:00 - NST 1967 Apr # N=Nome |
| - -11:00 - BST 1983 Nov 30 # B=Bering |
| - -11:00 - SST # S=Samoa |
| + -11:00 - -11 1956 Jun 3 |
| + -11:00 1:00 -10 1956 Sep 2 |
| + -11:00 - -11 |
| |
| # N Mariana Is |
| Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31 |
| 9:43:00 - LMT 1901 |
| - 9:00 - MPT 1969 Oct # N Mariana Is Time |
| - 10:00 - MPT 2000 Dec 23 |
| + 9:00 - +09 1969 Oct |
| + 10:00 - +10 2000 Dec 23 |
| 10:00 - ChST # Chamorro Standard Time |
| Index: contrib/tzdata/calendars |
| =================================================================== |
| --- contrib/tzdata/calendars (不存在的) |
| +++ contrib/tzdata/calendars (版本 325322) |
| @@ -0,0 +1,173 @@ |
| +----- Calendrical issues ----- |
| + |
| +As mentioned in Theory.html, although calendrical issues are out of |
| +scope for tzdb, they indicate the sort of problems that we would run |
| +into if we extended tzdb further into the past. The following |
| +information and sources go beyond Theory.html's brief discussion. |
| +They sometimes disagree. |
| + |
| + |
| +France |
| + |
| +Gregorian calendar adopted 1582-12-20. |
| +French Revolutionary calendar used 1793-11-24 through 1805-12-31, |
| +and (in Paris only) 1871-05-06 through 1871-05-23. |
| + |
| + |
| +Russia |
| + |
| +From Chris Carrier (1996-12-02): |
| +On 1929-10-01 the Soviet Union instituted an "Eternal Calendar" |
| +with 30-day months plus 5 holidays, with a 5-day week. |
| +On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the |
| +Gregorian calendar while retaining the 6-day week; on 1940-06-27 it |
| +reverted to the 7-day week. With the 6-day week the usual days |
| +off were the 6th, 12th, 18th, 24th and 30th of the month. |
| +(Source: Evitiar Zerubavel, _The Seven Day Circle_) |
| + |
| + |
| +Mark Brader reported a similar story in "The Book of Calendars", edited |
| +by Frank Parise (1982, Facts on File, ISBN 0-8719-6467-8), page 377. But: |
| + |
| +From: Petteri Sulonen (via Usenet) |
| +Date: 14 Jan 1999 00:00:00 GMT |
| +... |
| + |
| +If your source is correct, how come documents between 1929 and 1940 were |
| +still dated using the conventional, Gregorian calendar? |
| + |
| +I can post a scan of a document dated December 1, 1934, signed by |
| +Yenukidze, the secretary, on behalf of Kalinin, the President of the |
| +Executive Committee of the Supreme Soviet, if you like. |
| + |
| + |
| + |
| +Sweden (and Finland) |
| + |
| +From: Mark Brader |
| +Subject: Re: Gregorian reform - a part of locale? |
| +<news:1996Jul6.012937.29190@sq.com> |
| +Date: 1996-07-06 |
| + |
| +In 1700, Denmark made the transition from Julian to Gregorian. Sweden |
| +decided to *start* a transition in 1700 as well, but rather than have one of |
| +those unsightly calendar gaps :-), they simply decreed that the next leap |
| +year after 1696 would be in 1744 - putting the whole country on a calendar |
| +different from both Julian and Gregorian for a period of 40 years. |
| + |
| +However, in 1704 something went wrong and the plan was not carried through; |
| +they did, after all, have a leap year that year. And one in 1708. In 1712 |
| +they gave it up and went back to Julian, putting 30 days in February that |
| +year!... |
| + |
| +Then in 1753, Sweden made the transition to Gregorian in the usual manner, |
| +getting there only 13 years behind the original schedule. |
| + |
| +(A previous posting of this story was challenged, and Swedish readers |
| +produced the following references to support it: "Tideräkning och historia" |
| +by Natanael Beckman (1924) and "Tid, en bok om tideräkning och |
| +kalenderväsen" by Lars-Olof Lodén (1968). |
| + |
| + |
| +Grotefend's data |
| + |
| +From: "Michael Palmer" [with one obvious typo fixed] |
| +Subject: Re: Gregorian Calendar (was Re: Another FHC related question |
| +Newsgroups: soc.genealogy.german |
| +Date: Tue, 9 Feb 1999 02:32:48 -800 |
| +... |
| + |
| +The following is a(n incomplete) listing, arranged chronologically, of |
| +European states, with the date they converted from the Julian to the |
| +Gregorian calendar: |
| + |
| +04/15 Oct 1582 - Italy (with exceptions), Spain, Portugal, Poland (Roman |
| + Catholics and Danzig only) |
| +09/20 Dec 1582 - France, Lorraine |
| + |
| +21 Dec 1582/ |
| + 01 Jan 1583 - Holland, Brabant, Flanders, Hennegau |
| +10/21 Feb 1583 - bishopric of Liege (Lüttich) |
| +13/24 Feb 1583 - bishopric of Augsburg |
| +04/15 Oct 1583 - electorate of Trier |
| +05/16 Oct 1583 - Bavaria, bishoprics of Freising, Eichstedt, Regensburg, |
| + Salzburg, Brixen |
| +13/24 Oct 1583 - Austrian Oberelsaß and Breisgau |
| +20/31 Oct 1583 - bishopric of Basel |
| +02/13 Nov 1583 - duchy of Jülich-Berg |
| +02/13 Nov 1583 - electorate and city of Köln |
| +04/15 Nov 1583 - bishopric of Würzburg |
| +11/22 Nov 1583 - electorate of Mainz |
| +16/27 Nov 1583 - bishopric of Strassburg and the margraviate of Baden |
| +17/28 Nov 1583 - bishopric of Münster and duchy of Cleve |
| +14/25 Dec 1583 - Steiermark |
| + |
| +06/17 Jan 1584 - Austria and Bohemia |
| +11/22 Jan 1584 - Lucerne, Uri, Schwyz, Zug, Freiburg, Solothurn |
| +12/23 Jan 1584 - Silesia and the Lausitz |
| +22 Jan/ |
| + 02 Feb 1584 - Hungary (legally on 21 Oct 1587) |
| + Jun 1584 - Unterwalden |
| +01/12 Jul 1584 - duchy of Westfalen |
| + |
| +16/27 Jun 1585 - bishopric of Paderborn |
| + |
| +14/25 Dec 1590 - Transylvania |
| + |
| +22 Aug/ |
| + 02 Sep 1612 - duchy of Prussia |
| + |
| +13/24 Dec 1614 - Pfalz-Neuburg |
| + |
| + 1617 - duchy of Kurland (reverted to the Julian calendar in |
| + 1796) |
| + |
| + 1624 - bishopric of Osnabrück |
| + |
| + 1630 - bishopric of Minden |
| + |
| +15/26 Mar 1631 - bishopric of Hildesheim |
| + |
| + 1655 - Kanton Wallis |
| + |
| +05/16 Feb 1682 - city of Strassburg |
| + |
| +18 Feb/ |
| + 01 Mar 1700 - Protestant Germany (including Swedish possessions in |
| + Germany), Denmark, Norway |
| +30 Jun/ |
| + 12 Jul 1700 - Gelderland, Zutphen |
| +10 Nov/ |
| + 12 Dec 1700 - Utrecht, Overijssel |
| + |
| +31 Dec 1700/ |
| + 12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva, |
| + Turgau, and Schaffhausen |
| + |
| + 1724 - Glarus, Appenzell, and the city of St. Gallen |
| + |
| +01 Jan 1750 - Pisa and Florence |
| + |
| +02/14 Sep 1752 - Great Britain |
| + |
| +17 Feb/ |
| + 01 Mar 1753 - Sweden |
| + |
| +1760-1812 - Graubünden |
| + |
| +The Russian empire (including Finland and the Baltic states) did not |
| +convert to the Gregorian calendar until the Soviet revolution of 1917. |
| + |
| +Source: H. Grotefend, _Taschenbuch der Zeitrechnung des deutschen |
| +Mittelalters und der Neuzeit_, herausgegeben von Dr. O. Grotefend |
| +(Hannover: Hahnsche Buchhandlung, 1941), pp. 26-28. |
| + |
| +----- |
| + |
| +This file is in the public domain, so clarified as of 2009-05-17 by |
| +Arthur David Olson. |
| + |
| +----- |
| +Local Variables: |
| +coding: utf-8 |
| +End: |
| Index: contrib/tzdata/checklinks.awk |
| =================================================================== |
| --- contrib/tzdata/checklinks.awk (版本 324740) |
| +++ contrib/tzdata/checklinks.awk (版本 325322) |
| @@ -9,7 +9,7 @@ |
| Zone = "\n" |
| } |
| |
| -/^Zone/ { |
| +/^Z/ { |
| if (defined[$2]) { |
| if (defined[$2] == Zone) { |
| printf "%s: Zone has duplicate definition\n", $2 |
| @@ -21,7 +21,7 @@ |
| defined[$2] = Zone |
| } |
| |
| -/^Link/ { |
| +/^L/ { |
| if (defined[$3]) { |
| if (defined[$3] == Zone) { |
| printf "%s: Link with same name as Zone\n", $3 |
| Index: contrib/tzdata/europe |
| =================================================================== |
| --- contrib/tzdata/europe (版本 324740) |
| +++ contrib/tzdata/europe (版本 325322) |
| @@ -6,7 +6,7 @@ |
| # tz@iana.org for general use in the future). For more, please see |
| # the file CONTRIBUTING in the tz distribution. |
| |
| -# From Paul Eggert (2014-10-31): |
| +# From Paul Eggert (2017-02-10): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -13,8 +13,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -37,7 +37,7 @@ |
| # [PDF] (1914-03) |
| # |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 |
| -# <http://www.jstor.org/stable/1774359>. He writes: |
| +# <https://www.jstor.org/stable/1774359>. He writes: |
| # "It is requested that corrections and additions to these tables |
| # may be sent to Mr. John Milne, Royal Geographical Society, |
| # Savile Row, London." Nowadays please email them to tz@iana.org. |
| @@ -44,7 +44,7 @@ |
| # |
| # Byalokoz EL. New Counting of Time in Russia since July 1, 1919. |
| # This Russian-language source was consulted by Vladimir Karpinsky; see |
| -# http://mm.icann.org/pipermail/tz/2014-August/021320.html |
| +# https://mm.icann.org/pipermail/tz/2014-August/021320.html |
| # The full Russian citation is: |
| # Бялокоз, Евгений Людвигович. Новый счет времени в течении суток |
| # введенный декретом Совета народных комиссаров для всей России с 1-го |
| @@ -56,26 +56,23 @@ |
| # History of Summer Time |
| # <http://pcdsh01.on.br/HISTHV.htm> |
| # (1998-09-21, in Portuguese) |
| - |
| # |
| # I invented the abbreviations marked '*' in the following table; |
| -# the rest are from earlier versions of this file, or from other sources. |
| -# Corrections are welcome! |
| -# std dst 2dst |
| -# LMT Local Mean Time |
| -# -4:00 AST ADT Atlantic |
| -# -3:00 WGT WGST Western Greenland* |
| -# -1:00 EGT EGST Eastern Greenland* |
| -# 0:00 GMT BST BDST Greenwich, British Summer |
| -# 0:00 GMT IST Greenwich, Irish Summer |
| -# 0:00 WET WEST WEMT Western Europe |
| -# 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)* |
| -# 0:20 NET NEST Netherlands (1937-1940)* |
| -# 1:00 BST British Standard (1968-1971) |
| -# 1:00 CET CEST CEMT Central Europe |
| -# 1:00:14 SET Swedish (1879-1899)* |
| -# 2:00 EET EEST Eastern Europe |
| -# 3:00 MSK MSD Moscow |
| +# the rest are variants of the "xMT" pattern for a city's mean time, |
| +# or are from other sources. Corrections are welcome! |
| +# std dst 2dst |
| +# LMT Local Mean Time |
| +# -4:00 AST ADT Atlantic |
| +# 0:00 GMT BST BDST Greenwich, British Summer |
| +# 0:00 GMT IST Greenwich, Irish Summer |
| +# 0:00 WET WEST WEMT Western Europe |
| +# 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937) |
| +# 1:00 BST British Standard (1968-1971) |
| +# 1:00 CET CEST CEMT Central Europe |
| +# 1:00:14 SET Swedish (1879-1899) |
| +# 1:36:34 RMT* LST* Riga, Latvian Summer (1880-1926)* |
| +# 2:00 EET EEST Eastern Europe |
| +# 3:00 MSK MSD MDST* Moscow |
| |
| # From Peter Ilieve (1994-12-04), |
| # The original six [EU members]: Belgium, France, (West) Germany, Italy, |
| @@ -190,7 +187,7 @@ |
| # foundations of civilization throughout the world. |
| # -- "A Silent Toast to William Willett", Pictorial Weekly; |
| # republished in Finest Hour (Spring 2002) 1(114):26 |
| -# http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf |
| +# https://www.winstonchurchill.org/publications/finest-hour/finest-hour-114/a-silent-toast-to-william-willett-by-winston-s-churchill |
| |
| # From Paul Eggert (2015-08-08): |
| # The OED Supplement says that the English originally said "Daylight Saving" |
| @@ -228,8 +225,8 @@ |
| # official designation; the reply of the 21st was that there wasn't |
| # but he couldn't think of anything better than the "Double British |
| # Summer Time" that the BBC had been using informally. |
| -# http://www.polyomino.org.uk/british-time/bbc-19410418.png |
| -# http://www.polyomino.org.uk/british-time/ho-19410421.png |
| +# https://www.polyomino.org.uk/british-time/bbc-19410418.png |
| +# https://www.polyomino.org.uk/british-time/ho-19410421.png |
| |
| # From Sir Alexander Maxwell in the above-mentioned letter (1941-04-21): |
| # [N]o official designation has as far as I know been adopted for the time |
| @@ -246,13 +243,13 @@ |
| # the history of summer time legislation in the United Kingdom. |
| # Since 1998 Joseph S. Myers has been updating |
| # and extending this list, which can be found in |
| -# http://www.polyomino.org.uk/british-time/ |
| +# https://www.polyomino.org.uk/british-time/ |
| |
| # From Joseph S. Myers (1998-01-06): |
| # |
| # The legal time in the UK outside of summer time is definitely GMT, not UTC; |
| # see Lord Tanlaw's speech |
| -# http://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0 |
| +# https://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0 |
| # (Lords Hansard 11 June 1997 columns 964 to 976). |
| |
| # From Paul Eggert (2006-03-22): |
| @@ -298,7 +295,7 @@ |
| # Irish 'public feeling (was) outraged by forcing of English time on us'." |
| # -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising. |
| # Irish Times 2014-10-27. |
| -# http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411 |
| +# https://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411 |
| |
| # From Joseph S. Myers (2005-01-26): |
| # Irish laws are available online at <http://www.irishstatutebook.ie>. |
| @@ -351,6 +348,12 @@ |
| # Justice (tel +353 1 678 9711) who confirmed to me that the correct name is |
| # "Irish Summer Time", abbreviated to "IST". |
| |
| +# Michael Deckers (2017-06-01) gave the following URLs for Ireland's |
| +# Summer Time Act, 1925 and Summer Time Orders, 1926 and 1947: |
| +# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print.html |
| +# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print.html |
| +# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print.html |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| # Summer Time Act, 1916 |
| Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST |
| @@ -475,14 +478,14 @@ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 |
| - -0:25:21 - DMT 1916 May 21 2:00 |
| + -0:25:21 - DMT 1916 May 21 2:00s # Dublin MT |
| -0:25:21 1:00 IST 1916 Oct 1 2:00s |
| 0:00 GB-Eire %s 1921 Dec 6 # independence |
| - 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00 |
| - 0:00 1:00 IST 1946 Oct 6 2:00 |
| - 0:00 - GMT 1947 Mar 16 2:00 |
| - 0:00 1:00 IST 1947 Nov 2 2:00 |
| - 0:00 - GMT 1948 Apr 18 2:00 |
| + 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00s |
| + 0:00 1:00 IST 1946 Oct 6 2:00s |
| + 0:00 - GMT 1947 Mar 16 2:00s |
| + 0:00 1:00 IST 1947 Nov 2 2:00s |
| + 0:00 - GMT 1948 Apr 18 2:00s |
| 0:00 GB-Eire GMT/IST 1968 Oct 27 |
| 1:00 - IST 1971 Oct 31 2:00u |
| 0:00 GB-Eire GMT/IST 1996 |
| @@ -628,7 +631,7 @@ |
| # Council of Ministers of the USSR from 1989-03-14 No. 227. |
| # |
| # I did not find full texts of these acts. For the 1989 one we have |
| -# title at http://base.garant.ru/70754136/ : |
| +# title at https://base.garant.ru/70754136/ : |
| # "About change in calculation of time on the territories of |
| # Lithuanian SSR, Latvian SSR and Estonian SSR, Astrakhan, |
| # Kaliningrad, Kirov, Kuybyshev, Ulyanovsk and Uralsk oblasts". |
| @@ -659,7 +662,7 @@ |
| # http://bmockbe.ru/events/?ID=7583 |
| # |
| # Medvedev signed a law on the calculation of the time (in russian): |
| -# http://www.regnum.ru/news/polit/1413906.html |
| +# https://www.regnum.ru/news/polit/1413906.html |
| |
| # From Arthur David Olson (2011-06-15): |
| # Take "abolishing daylight saving time" to mean that time is now considered |
| @@ -786,7 +789,7 @@ |
| # Sources (Russian language): |
| # http://www.belta.by/ru/all_news/society/V-Belarusi-otmenjaetsja-perexod-na-sezonnoe-vremja_i_572952.html |
| # http://naviny.by/rubrics/society/2011/09/16/ic_articles_116_175144/ |
| -# http://news.tut.by/society/250578.html |
| +# https://news.tut.by/society/250578.html |
| # |
| # From Alexander Bokovoy (2014-10-09): |
| # Belarussian government decided against changing to winter time.... |
| @@ -901,7 +904,7 @@ |
| # Cyprus |
| # Please see the 'asia' file for Asia/Nicosia. |
| |
| -# Czech Republic |
| +# Czech Republic / Czechia |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Czech 1945 only - Apr 8 2:00s 1:00 S |
| Rule Czech 1945 only - Nov 18 2:00s 0 - |
| @@ -1064,16 +1067,16 @@ |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28 |
| - -3:00 - WGT 1980 Apr 6 2:00 |
| - -3:00 EU WG%sT 1996 |
| + -3:00 - -03 1980 Apr 6 2:00 |
| + -3:00 EU -03/-02 1996 |
| 0:00 - GMT |
| Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit |
| - -2:00 - CGT 1980 Apr 6 2:00 |
| - -2:00 C-Eur CG%sT 1981 Mar 29 |
| - -1:00 EU EG%sT |
| + -2:00 - -02 1980 Apr 6 2:00 |
| + -2:00 C-Eur -02/-01 1981 Mar 29 |
| + -1:00 EU -01/+00 |
| Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk |
| - -3:00 - WGT 1980 Apr 6 2:00 |
| - -3:00 EU WG%sT |
| + -3:00 - -03 1980 Apr 6 2:00 |
| + -3:00 EU -03/-02 |
| Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base |
| -4:00 Thule A%sT |
| |
| @@ -1107,7 +1110,7 @@ |
| # for their standard and summer times. He says no, they use "suveaeg" |
| # (summer time) and "talveaeg" (winter time). |
| |
| -# From The Baltic Times <http://www.baltictimes.com/> (1999-09-09) |
| +# From The Baltic Times <https://www.baltictimes.com/> (1999-09-09) |
| # via Steffen Thorsen: |
| # This year will mark the last time Estonia shifts to summer time, |
| # a council of the ruling coalition announced Sept. 6.... |
| @@ -1159,7 +1162,7 @@ |
| # This is documented in Heikki Oja: Aikakirja 2007, published by The Almanac |
| # Office of University of Helsinki, ISBN 952-10-3221-9, available online (in |
| # Finnish) at |
| -# http://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf |
| +# https://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf |
| # |
| # Page 105 (56 in PDF version) has a handy table of all past daylight savings |
| # transitions. It is easy enough to interpret without Finnish skills. |
| @@ -1172,7 +1175,7 @@ |
| |
| # From Konstantin Hyppönen (2014-06-13): |
| # [Heikki Oja's book Aikakirja 2013] |
| -# http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf |
| +# https://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf |
| # pages 104-105, including a scan from a newspaper published on Apr 2 1942 |
| # say that ... [o]n Apr 2 1942, 24 o'clock (which means Apr 3 1942, |
| # 00:00), clocks were moved one hour forward. The newspaper |
| @@ -1302,7 +1305,7 @@ |
| |
| # From Jörg Schilling (2002-10-23): |
| # In 1945, Berlin was switched to Moscow Summer time (GMT+4) by |
| -# http://www.dhm.de/lemo/html/biografien/BersarinNikolai/ |
| +# https://www.dhm.de/lemo/html/biografien/BersarinNikolai/ |
| # General [Nikolai] Bersarin. |
| |
| # From Paul Eggert (2003-03-08): |
| @@ -1488,7 +1491,7 @@ |
| Rule Iceland 1967 only - Oct 29 1:00s 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Atlantic/Reykjavik -1:28 - LMT 1908 |
| - -1:00 Iceland IS%sT 1968 Apr 7 1:00s |
| + -1:00 Iceland -01/+00 1968 Apr 7 1:00s |
| 0:00 - GMT |
| |
| # Italy |
| @@ -1527,7 +1530,7 @@ |
| # From Paul Eggert (2016-10-27): |
| # Go with INRiM for DST rules, except as corrected by Inglis for 1944 |
| # for the Kingdom of Italy. This is consistent with Renzo Baldini. |
| -# Model Rome's occupation by using using C-Eur rules from 1943-09-10 |
| +# Model Rome's occupation by using C-Eur rules from 1943-09-10 |
| # to 1944-06-04; although Rome was an open city during this period, it |
| # was effectively controlled by Germany. |
| # |
| @@ -1842,7 +1845,7 @@ |
| # Following Moldova and neighboring Ukraine- Transnistria (Pridnestrovie)- |
| # Tiraspol will go back to winter time on October 30, 2011. |
| # News from Moldova (in russian): |
| -# http://ru.publika.md/link_317061.html |
| +# https://ru.publika.md/link_317061.html |
| |
| # From Roman Tudos (2015-07-02): |
| # http://lex.justice.md/index.php?action=view&view=doc&lang=1&id=355077 |
| @@ -1849,7 +1852,7 @@ |
| # From Paul Eggert (2015-07-01): |
| # The abovementioned official link to IGO1445-868/2014 states that |
| # 2014-10-26's fallback transition occurred at 03:00 local time. Also, |
| -# http://www.trm.md/en/social/la-30-martie-vom-trece-la-ora-de-vara |
| +# https://www.trm.md/en/social/la-30-martie-vom-trece-la-ora-de-vara |
| # says the 2014-03-30 spring-forward transition was at 02:00 local time. |
| # Guess that since 1997 Moldova has switched one hour before the EU. |
| |
| @@ -1921,7 +1924,7 @@ |
| # Amsterdam mean time. |
| |
| # The data entries before 1945 are taken from |
| -# http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm |
| +# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm |
| |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time |
| @@ -1952,7 +1955,7 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Europe/Amsterdam 0:19:32 - LMT 1835 |
| 0:19:32 Neth %s 1937 Jul 1 |
| - 0:20 Neth NE%sT 1940 May 16 0:00 # Dutch Time |
| + 0:20 Neth +0020/+0120 1940 May 16 0:00 |
| 1:00 C-Eur CE%sT 1945 Apr 2 2:00 |
| 1:00 Neth CE%sT 1977 |
| 1:00 EU CE%sT |
| @@ -2002,7 +2005,7 @@ |
| # so it must have diverged from Oslo time during the war, as Oslo was |
| # keeping Berlin time. |
| # |
| -# <http://home.no.net/janmayen/history.htm> says that the meteorologists |
| +# <https://www.jan-mayen.no/history.htm> says that the meteorologists |
| # burned down their station in 1940 and left the island, but returned in |
| # 1941 with a small Norwegian garrison and continued operations despite |
| # frequent air attacks from Germans. In 1943 the Americans established a |
| @@ -2040,7 +2043,7 @@ |
| Rule Poland 1945 only - Nov 1 0:00 0 - |
| # For 1946 on the source is Kazimierz Borkowski, |
| # Toruń Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U., |
| -# http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1 |
| +# https://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1 |
| # Thanks to Przemysław Augustyniak (2005-05-28) for this reference. |
| # He also gives these further references: |
| # Mon Pol nr 13, poz 162 (1995) <http://www.abc.com.pl/serwis/mp/1995/0162.htm> |
| @@ -2074,7 +2077,7 @@ |
| # |
| # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne: |
| # According to a Portuguese decree (1911-05-26) |
| -# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf |
| +# https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf |
| # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00. |
| # Round the old offset to -0:36:45. This agrees with Willett but disagrees |
| # with Shanks, who says the transition occurred on 1911-05-24 at 00:00 for |
| @@ -2169,16 +2172,34 @@ |
| 0:00 W-Eur WE%sT 1992 Sep 27 1:00s |
| 1:00 EU CE%sT 1996 Mar 31 1:00u |
| 0:00 EU WE%sT |
| +# This Zone can be simplified once we assume zic %z. |
| Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada |
| -1:54:32 - HMT 1912 Jan 1 # Horta Mean Time |
| - -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time |
| - -1:00 Port AZO%sT 1983 Sep 25 1:00s |
| - -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s |
| + -2:00 Port -02/-01 1942 Apr 25 22:00s |
| + -2:00 Port +00 1942 Aug 15 22:00s |
| + -2:00 Port -02/-01 1943 Apr 17 22:00s |
| + -2:00 Port +00 1943 Aug 28 22:00s |
| + -2:00 Port -02/-01 1944 Apr 22 22:00s |
| + -2:00 Port +00 1944 Aug 26 22:00s |
| + -2:00 Port -02/-01 1945 Apr 21 22:00s |
| + -2:00 Port +00 1945 Aug 25 22:00s |
| + -2:00 Port -02/-01 1966 Apr 3 2:00 |
| + -1:00 Port -01/+00 1983 Sep 25 1:00s |
| + -1:00 W-Eur -01/+00 1992 Sep 27 1:00s |
| 0:00 EU WE%sT 1993 Mar 28 1:00u |
| - -1:00 EU AZO%sT |
| + -1:00 EU -01/+00 |
| +# This Zone can be simplified once we assume zic %z. |
| Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal |
| -1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time |
| - -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time |
| + -1:00 Port -01/+00 1942 Apr 25 22:00s |
| + -1:00 Port +01 1942 Aug 15 22:00s |
| + -1:00 Port -01/+00 1943 Apr 17 22:00s |
| + -1:00 Port +01 1943 Aug 28 22:00s |
| + -1:00 Port -01/+00 1944 Apr 22 22:00s |
| + -1:00 Port +01 1944 Aug 26 22:00s |
| + -1:00 Port -01/+00 1945 Apr 21 22:00s |
| + -1:00 Port +01 1945 Aug 25 22:00s |
| + -1:00 Port -01/+00 1966 Apr 3 2:00 |
| 0:00 Port WE%sT 1983 Sep 25 1:00s |
| 0:00 EU WE%sT |
| |
| @@ -2238,7 +2259,7 @@ |
| # 2011 No. 725" and contains no other dates or "effective date" information. |
| # |
| # Another source is |
| -# http://www.rg.ru/2011/09/06/chas-zona-dok.html |
| +# https://rg.ru/2011/09/06/chas-zona-dok.html |
| # which, according to translate.google.com, begins "Resolution of the |
| # Government of the Russian Federation on August 31, 2011 N 725" and also |
| # contains "Date first official publication: September 6, 2011 Posted on: |
| @@ -2246,7 +2267,7 @@ |
| # does not contain any "effective date" information. |
| # |
| # Another source is |
| -# http://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7 |
| +# https://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7 |
| # which, in note 8, contains "Resolution No. 725 of August 31, 2011... |
| # Effective as of after 7 days following the day of the official publication" |
| # but which does not contain any reference to September 6, 2011. |
| @@ -2282,7 +2303,7 @@ |
| # http://itar-tass.com/obschestvo/1333711 |
| # http://www.pravo.gov.ru:8080/page.aspx?111660 |
| # http://www.kremlin.ru/acts/46279 |
| -# From October 26, 2014 the new Russian time zone map will looks like this: |
| +# From October 26, 2014 the new Russian time zone map will look like this: |
| # http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html |
| |
| # From Paul Eggert (2006-03-22): |
| @@ -2329,7 +2350,7 @@ |
| # with maintenance only and represent our best guesses as to which regions |
| # are covered by each zone. They are not meant to be taken as an authoritative |
| # listing. The region codes listed come from |
| -# http://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498 |
| +# https://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498 |
| # and are used for convenience only; no guarantees are made regarding their |
| # future stability. ISO 3166-2:RU codes are also listed for first-level |
| # divisions where available. |
| @@ -2494,7 +2515,7 @@ |
| # http://www.kaliningradka.ru/site_pc/cherez/index.php?ELEMENT_ID=40091 |
| # says that Kaliningrad decided not to be an exception 2 days before the |
| # 1991-03-31 switch and one person at |
| -# http://izhevsk.ru/forum_light_message/50/682597-m8369040.html |
| +# https://izhevsk.ru/forum_light_message/50/682597-m8369040.html |
| # says he remembers that Samara opted out of the 1992-01-19 exception |
| # 2 days before the switch. |
| # |
| @@ -2536,10 +2557,8 @@ |
| 3:00 - MSK |
| |
| |
| -# From Tim Parenti (2014-07-03): |
| -# Europe/Simferopol covers... |
| -# ** **** Crimea, Republic of |
| -# ** **** Sevastopol |
| +# From Paul Eggert (2016-12-06): |
| +# Europe/Simferopol covers Crimea. |
| |
| Zone Europe/Simferopol 2:16:24 - LMT 1880 |
| 2:16 - SMT 1924 May 2 # Simferopol Mean T |
| @@ -2568,7 +2587,7 @@ |
| 3:00 - MSK 1997 Mar lastSun 1:00u |
| # From Alexander Krivenyshev (2014-03-17): |
| # time change at 2:00 (2am) on March 30, 2014 |
| -# http://vz.ru/news/2014/3/17/677464.html |
| +# https://vz.ru/news/2014/3/17/677464.html |
| # From Paul Eggert (2014-03-30): |
| # Simferopol and Sevastopol reportedly changed their central town clocks |
| # late the previous day, but this appears to have been ceremonial |
| @@ -2601,10 +2620,9 @@ |
| 3:00 - +03 2016 Mar 27 2:00s |
| 4:00 - +04 |
| |
| -# From Paul Eggert (2016-03-18): |
| +# From Paul Eggert (2016-11-11): |
| # Europe/Volgograd covers: |
| # 34 RU-VGG Volgograd Oblast |
| -# 64 RU-SAR Saratov Oblast |
| # The 1988 transition is from USSR act No. 5 (1988-01-04). |
| |
| Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3 |
| @@ -2617,6 +2635,27 @@ |
| 4:00 - +04 2014 Oct 26 2:00s |
| 3:00 - +03 |
| |
| +# From Paul Eggert (2016-11-11): |
| +# Europe/Saratov covers: |
| +# 64 RU-SAR Saratov Oblast |
| + |
| +# From Yuri Konotopov (2016-11-11): |
| +# Dec 4, 2016 02:00 UTC+3.... Saratov Region's local time will be ... UTC+4. |
| +# From Stepan Golosunov (2016-11-11): |
| +# ... Byalokoz listed Saratov on 03:04:18. |
| +# From Stepan Golosunov (2016-11-22): |
| +# http://publication.pravo.gov.ru/Document/View/0001201611220031 |
| + |
| +Zone Europe/Saratov 3:04:18 - LMT 1919 Jul 1 0:00u |
| + 3:00 - +03 1930 Jun 21 |
| + 4:00 Russia +04/+05 1988 Mar 27 2:00s |
| + 3:00 Russia +03/+04 1991 Mar 31 2:00s |
| + 4:00 - +04 1992 Mar 29 2:00s |
| + 3:00 Russia +03/+04 2011 Mar 27 2:00s |
| + 4:00 - +04 2014 Oct 26 2:00s |
| + 3:00 - +03 2016 Dec 4 2:00s |
| + 4:00 - +04 |
| + |
| # From Paul Eggert (2016-03-18): |
| # Europe/Kirov covers: |
| # 43 RU-KIR Kirov Oblast |
| @@ -2731,7 +2770,7 @@ |
| # suggests that Altai Republic transitioned to Moscow+3 on |
| # 1995-05-28. |
| # |
| -# http://regnum.ru/news/society/1957270.html |
| +# https://regnum.ru/news/society/1957270.html |
| # has some historical data for Altai Krai: |
| # before 1957: west part on UTC+6, east on UTC+7 |
| # after 1957: UTC+7 |
| @@ -3105,8 +3144,8 @@ |
| # districts, but have very similar populations. In fact, Wikipedia currently |
| # lists them both as having 3528 people, exactly 1668 males and 1860 females |
| # each! (Yikes!) |
| -# http://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276 |
| -# http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493 |
| +# https://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276 |
| +# https://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493 |
| # Assume this is a mistake, albeit an amusing one. |
| # |
| # Looking at censuses, the populations of the two municipalities seem to have |
| @@ -3212,46 +3251,77 @@ |
| # See Europe/Belgrade. |
| |
| # Spain |
| +# |
| +# From Paul Eggert (2016-12-14): |
| +# |
| +# The source for Europe/Madrid before 2013 is: |
| +# Planesas P. La hora oficial en España y sus cambios. |
| +# Anuario del Observatorio Astronómico de Madrid (2013, in Spanish). |
| +# http://astronomia.ign.es/rknowsys-theme/images/webAstro/paginas/documentos/Anuario/lahoraoficialenespana.pdf |
| +# As this source says that historical time in the Canaries is obscure, |
| +# and it does not discuss Ceuta, stick with Shanks for now for that data. |
| +# |
| +# In the 1918 and 1919 fallback transitions in Spain, the clock for |
| +# the hour-longer day officially kept going after midnight, so that |
| +# the repeated instances of that day's 00:00 hour were 24 hours apart, |
| +# with a fallback transition from the second occurrence of 00:59... to |
| +# the next day's 00:00. Our data format cannot represent this |
| +# directly, and instead repeats the first hour of the next day, with a |
| +# fallback transition from the next day's 00:59... to 00:00. |
| + |
| +# From Michael Deckers (2016-12-15): |
| +# The Royal Decree of 1900-06-26 quoted by Planesas, online at |
| +# https://www.boe.es/datos/pdfs/BOE//1900/209/A00383-00384.pdf |
| +# says in its article 5 (my translation): |
| +# These dispositions will enter into force beginning with the |
| +# instant at which, according to the time indicated in article 1, |
| +# the 1st day of January of 1901 will begin. |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -# For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1; |
| -# go with Shanks & Pottenger. |
| -Rule Spain 1917 only - May 5 23:00s 1:00 S |
| -Rule Spain 1917 1919 - Oct 6 23:00s 0 - |
| -Rule Spain 1918 only - Apr 15 23:00s 1:00 S |
| -Rule Spain 1919 only - Apr 5 23:00s 1:00 S |
| -# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger. |
| -Rule Spain 1924 only - Apr 16 23:00s 1:00 S |
| -# Whitman gives 1924 Oct 14; go with Shanks & Pottenger. |
| -Rule Spain 1924 only - Oct 4 23:00s 0 - |
| -Rule Spain 1926 only - Apr 17 23:00s 1:00 S |
| -# Whitman says no DST in 1929; go with Shanks & Pottenger. |
| -Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 - |
| -Rule Spain 1927 only - Apr 9 23:00s 1:00 S |
| -Rule Spain 1928 only - Apr 14 23:00s 1:00 S |
| -Rule Spain 1929 only - Apr 20 23:00s 1:00 S |
| -# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13; |
| -# go with Shanks & Pottenger. |
| -Rule Spain 1937 only - May 22 23:00s 1:00 S |
| -Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 - |
| -Rule Spain 1938 only - Mar 22 23:00s 1:00 S |
| -Rule Spain 1939 only - Apr 15 23:00s 1:00 S |
| -Rule Spain 1940 only - Mar 16 23:00s 1:00 S |
| -# Whitman says no DST 1942-1945; go with Shanks & Pottenger. |
| -Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer |
| -Rule Spain 1942 only - Sep 1 22:00s 1:00 S |
| -Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M |
| -Rule Spain 1943 only - Oct 3 22:00s 1:00 S |
| -Rule Spain 1944 only - Oct 10 22:00s 1:00 S |
| -Rule Spain 1945 only - Sep 30 1:00 1:00 S |
| -Rule Spain 1946 only - Sep 30 0:00 0 - |
| +Rule Spain 1918 only - Apr 15 23:00 1:00 S |
| +Rule Spain 1918 1919 - Oct 6 24:00s 0 - |
| +Rule Spain 1919 only - Apr 6 23:00 1:00 S |
| +Rule Spain 1924 only - Apr 16 23:00 1:00 S |
| +Rule Spain 1924 only - Oct 4 24:00s 0 - |
| +Rule Spain 1926 only - Apr 17 23:00 1:00 S |
| +Rule Spain 1926 1929 - Oct Sat>=1 24:00s 0 - |
| +Rule Spain 1927 only - Apr 9 23:00 1:00 S |
| +Rule Spain 1928 only - Apr 15 0:00 1:00 S |
| +Rule Spain 1929 only - Apr 20 23:00 1:00 S |
| +# Republican Spain during the civil war; it controlled Madrid until 1939-03-28. |
| +Rule Spain 1937 only - Jun 16 23:00 1:00 S |
| +Rule Spain 1937 only - Oct 2 24:00s 0 - |
| +Rule Spain 1938 only - Apr 2 23:00 1:00 S |
| +Rule Spain 1938 only - Apr 30 23:00 2:00 M |
| +Rule Spain 1938 only - Oct 2 24:00 1:00 S |
| +# The following rules are for unified Spain again. |
| +# |
| +# Planesas does not say what happened in Madrid between its fall on |
| +# 1939-03-28 and the Nationalist spring-forward transition on |
| +# 1939-04-15. For lack of better info, assume Madrid's clocks did not |
| +# change during that period. |
| +# |
| +# The first rule is commented out, as it is redundant for Republican Spain. |
| +#Rule Spain 1939 only - Apr 15 23:00 1:00 S |
| +Rule Spain 1939 only - Oct 7 24:00s 0 - |
| +Rule Spain 1942 only - May 2 23:00 1:00 S |
| +Rule Spain 1942 only - Sep 1 1:00 0 - |
| +Rule Spain 1943 1946 - Apr Sat>=13 23:00 1:00 S |
| +Rule Spain 1943 1944 - Oct Sun>=1 1:00 0 - |
| +Rule Spain 1945 1946 - Sep lastSun 1:00 0 - |
| Rule Spain 1949 only - Apr 30 23:00 1:00 S |
| -Rule Spain 1949 only - Sep 30 1:00 0 - |
| -Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S |
| +Rule Spain 1949 only - Oct 2 1:00 0 - |
| +Rule Spain 1974 1975 - Apr Sat>=12 23:00 1:00 S |
| Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 - |
| Rule Spain 1976 only - Mar 27 23:00 1:00 S |
| Rule Spain 1976 1977 - Sep lastSun 1:00 0 - |
| -Rule Spain 1977 1978 - Apr 2 23:00 1:00 S |
| -Rule Spain 1978 only - Oct 1 1:00 0 - |
| +Rule Spain 1977 only - Apr 2 23:00 1:00 S |
| +Rule Spain 1978 only - Apr 2 2:00s 1:00 S |
| +Rule Spain 1978 only - Oct 1 2:00s 0 - |
| +# Nationalist Spain during the civil war |
| +#Rule NatSpain 1937 only - May 22 23:00 1:00 S |
| +#Rule NatSpain 1937 1938 - Oct Sat>=1 24:00s 0 - |
| +#Rule NatSpain 1938 only - Mar 26 23:00 1:00 S |
| # The following rules are copied from Morocco from 1967 through 1978. |
| Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S |
| Rule SpainAfrica 1967 only - Oct 1 0:00 0 - |
| @@ -3263,11 +3333,11 @@ |
| Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S |
| Rule SpainAfrica 1978 only - Aug 4 0:00 0 - |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| -Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s |
| - 0:00 Spain WE%sT 1946 Sep 30 |
| +Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16 |
| + 0:00 Spain WE%sT 1940 Mar 16 23:00 |
| 1:00 Spain CE%sT 1979 |
| 1:00 EU CE%sT |
| -Zone Africa/Ceuta -0:21:16 - LMT 1901 |
| +Zone Africa/Ceuta -0:21:16 - LMT 1900 Dec 31 23:38:44 |
| 0:00 - WET 1918 May 6 23:00 |
| 0:00 1:00 WEST 1918 Oct 7 23:00 |
| 0:00 - WET 1924 |
| @@ -3276,7 +3346,7 @@ |
| 1:00 - CET 1986 |
| 1:00 EU CE%sT |
| Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C. |
| - -1:00 - CANT 1946 Sep 30 1:00 # Canaries T |
| + -1:00 - -01 1946 Sep 30 1:00 |
| 0:00 - WET 1980 Apr 6 0:00s |
| 0:00 1:00 WEST 1980 Sep 28 1:00u |
| 0:00 EU WE%sT |
| @@ -3396,7 +3466,7 @@ |
| # |
| # From Alois Treindl (2013-09-11): |
| # The Federal regulations say |
| -# http://www.admin.ch/opc/de/classified-compilation/20071096/index.html |
| +# https://www.admin.ch/opc/de/classified-compilation/20071096/index.html |
| # ... the meridian for Bern mean time ... is 7 degrees 26' 22.50". |
| # Expressed in time, it is 0h29m45.5s. |
| |
| @@ -3473,9 +3543,9 @@ |
| # According to the articles linked below, Turkey will change into summer |
| # time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27. |
| # This change is due to a nationwide exam on 27th. |
| -# http://www.worldbulletin.net/?aType=haber&ArticleID=70872 |
| +# https://www.worldbulletin.net/?aType=haber&ArticleID=70872 |
| # Turkish: |
| -# http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373 |
| +# https://www.hurriyet.com.tr/yaz-saati-uygulamasi-bir-gun-ileri-alindi-17230464 |
| |
| # From Faruk Pasin (2014-02-14): |
| # The DST for Turkey has been changed for this year because of the |
| @@ -3611,7 +3681,7 @@ |
| # http://www.segodnya.ua/news/14290482.html |
| # |
| # Deputies cancelled the winter time (in Russian) |
| -# http://www.pravda.com.ua/rus/news/2011/09/20/6600616/ |
| +# https://www.pravda.com.ua/rus/news/2011/09/20/6600616/ |
| # |
| # From Philip Pizzey (2011-10-18): |
| # Today my Ukrainian colleagues have informed me that the |
| @@ -3689,7 +3759,7 @@ |
| # spelling, except omit the apostrophe as it is not allowed in |
| # portable Posix file names. |
| Zone Europe/Zaporozhye 2:20:40 - LMT 1880 |
| - 2:20 - CUT 1924 May 2 # Central Ukraine T |
| + 2:20 - +0220 1924 May 2 |
| 2:00 - EET 1930 Jun 21 |
| 3:00 - MSK 1941 Aug 25 |
| 1:00 C-Eur CE%sT 1943 Oct 25 |
| Index: contrib/tzdata/leap-seconds.list |
| =================================================================== |
| --- contrib/tzdata/leap-seconds.list (版本 324740) |
| +++ contrib/tzdata/leap-seconds.list (版本 325322) |
| @@ -199,10 +199,10 @@ |
| # current -- the update time stamp, the data and the name of the file |
| # will not change. |
| # |
| -# Updated through IERS Bulletin C52 |
| -# File expires on: 28 June 2017 |
| +# Updated through IERS Bulletin C54 |
| +# File expires on: 28 June 2018 |
| # |
| -#@ 3707596800 |
| +#@ 3739132800 |
| # |
| 2272060800 10 # 1 Jan 1972 |
| 2287785600 11 # 1 Jul 1972 |
| @@ -247,4 +247,4 @@ |
| # the hash line is also ignored in the |
| # computation. |
| # |
| -#h dacf2c42 2c4765d6 3c797af8 2cf630eb 699c8c67 |
| +#h 5101445a 69948b51 9153e2b 2086e3d8 d54561a3 |
| Index: contrib/tzdata/leapseconds |
| =================================================================== |
| --- contrib/tzdata/leapseconds (版本 324740) |
| +++ contrib/tzdata/leapseconds (版本 325322) |
| @@ -3,19 +3,18 @@ |
| # This file is in the public domain. |
| |
| # This file is generated automatically from the data in the public-domain |
| -# leap-seconds.list file available from most NIST time servers. |
| -# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work, |
| -# you should be able to pick up leap-seconds.list from a secondary NIST server. |
| -# See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers. |
| +# leap-seconds.list file, which is copied from: |
| +# ftp://ftp.nist.gov/pub/time/leap-seconds.list |
| # For more about leap-seconds.list, please see |
| # The NTP Timescale and Leap Seconds |
| -# http://www.eecis.udel.edu/~mills/leap.html |
| +# https://www.eecis.udel.edu/~mills/leap.html |
| |
| # The International Earth Rotation and Reference Systems Service |
| # periodically uses leap seconds to keep UTC to within 0.9 s of UT1 |
| # (which measures the true angular orientation of the earth in space); see |
| -# Terry J Quinn, The BIPM and the accurate measure of time, |
| -# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>. |
| +# Levine J. Coordinated Universal Time and the leap second. |
| +# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995 |
| +# http://ieeexplore.ieee.org/document/7909995/ |
| # There were no leap seconds before 1972, because the official mechanism |
| # accounting for the discrepancy between atomic time and the earth's rotation |
| # did not exist until the early 1970s. |
| @@ -58,5 +57,5 @@ |
| Leap 2015 Jun 30 23:59:60 + S |
| Leap 2016 Dec 31 23:59:60 + S |
| |
| -# Updated through IERS Bulletin C52 |
| -# File expires on: 28 June 2017 |
| +# Updated through IERS Bulletin C54 |
| +# File expires on: 28 June 2018 |
| Index: contrib/tzdata/leapseconds.awk |
| =================================================================== |
| --- contrib/tzdata/leapseconds.awk (版本 324740) |
| +++ contrib/tzdata/leapseconds.awk (版本 325322) |
| @@ -8,19 +8,18 @@ |
| print "# This file is in the public domain." |
| print "" |
| print "# This file is generated automatically from the data in the public-domain" |
| - print "# leap-seconds.list file available from most NIST time servers." |
| - print "# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work," |
| - print "# you should be able to pick up leap-seconds.list from a secondary NIST server." |
| - print "# See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers." |
| + print "# leap-seconds.list file, which is copied from:" |
| + print "# ftp://ftp.nist.gov/pub/time/leap-seconds.list" |
| print "# For more about leap-seconds.list, please see" |
| print "# The NTP Timescale and Leap Seconds" |
| - print "# http://www.eecis.udel.edu/~mills/leap.html" |
| + print "# https://www.eecis.udel.edu/~mills/leap.html" |
| print "" |
| print "# The International Earth Rotation and Reference Systems Service" |
| print "# periodically uses leap seconds to keep UTC to within 0.9 s of UT1" |
| print "# (which measures the true angular orientation of the earth in space); see" |
| - print "# Terry J Quinn, The BIPM and the accurate measure of time," |
| - print "# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>." |
| + print "# Levine J. Coordinated Universal Time and the leap second." |
| + print "# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995" |
| + print "# http://ieeexplore.ieee.org/document/7909995/" |
| print "# There were no leap seconds before 1972, because the official mechanism" |
| print "# accounting for the discrepancy between atomic time and the earth's rotation" |
| print "# did not exist until the early 1970s." |
| Index: contrib/tzdata/northamerica |
| =================================================================== |
| --- contrib/tzdata/northamerica (版本 324740) |
| +++ contrib/tzdata/northamerica (版本 325322) |
| @@ -105,10 +105,13 @@ |
| # Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama. |
| # In the introduction, Oboler spoke of "Eastern Peace Time." |
| # An AltaVista search turned up: |
| -# http://rowayton.org/rhs/hstaug45.html |
| +# https://web.archive.org/web/20000926032210/http://rowayton.org/rhs/hstaug45.html |
| # "When the time is announced over the radio now, it is 'Eastern Peace |
| # Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful." |
| # (August 1945) by way of confirmation. |
| +# |
| +# From Paul Eggert (2017-09-23): |
| +# This was the V-J Day issue of the Clamdigger, a Rowayton, CT newsletter. |
| |
| # From Joseph Gallant citing |
| # George H. Douglas, _The Early Days of Radio Broadcasting_ (1987): |
| @@ -178,22 +181,6 @@ |
| Zone MST7MDT -7:00 US M%sT |
| Zone PST8PDT -8:00 US P%sT |
| |
| -# From Bob Devine (1988-01-28): |
| -# ...Alaska (and Hawaii) had the timezone names changed in 1967. |
| -# old new |
| -# Pacific Standard Time(PST) -same- |
| -# Yukon Standard Time(YST) -same- |
| -# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST) |
| -# Nome Standard Time (NT) Bering Standard Time (BST) |
| -# |
| -# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz. |
| -# The YST zone now covers nearly all of the state, AHST just part |
| -# of the Aleutian islands. No DST. |
| - |
| -# From Paul Eggert (1995-12-19): |
| -# The tables below use 'NST', not 'NT', for Nome Standard Time. |
| -# I invented 'CAWT' for Central Alaska War Time. |
| - |
| # From U. S. Naval Observatory (1989-01-19): |
| # USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON |
| # USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30 |
| @@ -250,6 +237,21 @@ |
| # Samoa standard time |
| # The law doesn't give abbreviations. |
| # |
| +# From Paul Eggert (2016-12-19): |
| +# Here are URLs for the 1918 and 1966 legislation: |
| +# http://uscode.house.gov/statviewer.htm?volume=40&page=451 |
| +# http://uscode.house.gov/statviewer.htm?volume=80&page=108 |
| +# Although the 1918 names were officially "United States Standard |
| +# Eastern Time" and similarly for "Central", "Mountain", "Pacific", |
| +# and "Alaska", in practice "Standard" was placed just before "Time", |
| +# as codified in 1966. In practice, Alaska time was abbreviated "AST" |
| +# before 1968. Summarizing the 1967 name changes: |
| +# 1918 names 1967 names |
| +# -08 Standard Pacific Time (PST) Pacific standard time (PST) |
| +# -09 (unofficial) Yukon (YST) Yukon standard time (YST) |
| +# -10 Standard Alaska Time (AST) Alaska-Hawaii standard time (AHST) |
| +# -11 (unofficial) Nome (NST) Bering standard time (BST) |
| +# |
| # From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: |
| # Public law 106-564 (2000-12-23) introduced ... "Chamorro Standard Time" |
| # for time in Guam and the Northern Marianas. See the file "australasia". |
| @@ -258,7 +260,7 @@ |
| # HST and HDT are standardized abbreviations for Hawaii-Aleutian |
| # standard and daylight times. See section 9.47 (p 234) of the |
| # U.S. Government Printing Office Style Manual (2008) |
| -# http://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008.pdf |
| +# https://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008.pdf |
| |
| # From Arthur David Olson, 2005-08-09 |
| # The following was signed into law on 2005-08-08. |
| @@ -305,6 +307,15 @@ |
| # Roberts, city administrator in Phenix City. as saying "We are in the Central |
| # time zone, but we do go by the Eastern time zone because so many people work |
| # in Columbus." |
| +# |
| +# From Paul Eggert (2017-02-22): |
| +# Four cities are involved. The two not mentioned above are Smiths Station |
| +# and Valley. Barbara Brooks, Valley's assistant treasurer, heard it started |
| +# because West Point Pepperell textile mills were in Alabama while the |
| +# corporate office was in Georgia, and residents voted to keep Eastern |
| +# time even after the mills closed. See: Kazek K. Did you know which |
| +# Alabama towns are in a different time zone? al.com 2017-02-06. |
| +# http://www.al.com/living/index.ssf/2017/02/do_you_know_which_alabama_town.html |
| |
| # From Paul Eggert (2014-09-06): |
| # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208 |
| @@ -338,7 +349,7 @@ |
| # western Tennessee, most of Texas, Wisconsin |
| |
| # From Larry M. Smith (2006-04-26) re Wisconsin: |
| -# http://www.legis.state.wi.us/statutes/Stat0175.pdf ... |
| +# https://docs.legis.wisconsin.gov/statutes/statutes/175.pdf |
| # is currently enforced at the 01:00 time of change. Because the local |
| # "bar time" in the state corresponds to 02:00, a number of citations |
| # are issued for the "sale of class 'B' alcohol after prohibited |
| @@ -347,7 +358,7 @@ |
| # From Douglas R. Bomberg (2007-03-12): |
| # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI |
| # Statue 175 closer in synch with the US Congress' intent.... |
| -# http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf |
| +# https://docs.legis.wisconsin.gov/2007/related/acts/3 |
| |
| # From an email administrator of the City of Fort Pierre, SD (2015-12-21): |
| # Fort Pierre is technically located in the Mountain time zone as is |
| @@ -394,7 +405,7 @@ |
| # ...it appears that Mercer County, North Dakota, changed from the |
| # mountain time zone to the central time zone at the last transition from |
| # daylight-saving to standard time (on Nov. 7, 2010): |
| -# http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm |
| +# https://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm |
| # http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html |
| |
| # From Andy Lipscomb (2011-01-24): |
| @@ -445,7 +456,7 @@ |
| # legal time, and is not part of the data here.) See: |
| # Ross SA. An energy crisis from the past: Northern California in 1948. |
| # Working Paper No. 8, Institute of Governmental Studies, UC Berkeley, |
| -# 1973-11. http://escholarship.org/uc/item/8x22k30c |
| +# 1973-11. https://escholarship.org/uc/item/8x22k30c |
| # |
| # In another measure to save electricity, DST was instituted from 1948-03-14 |
| # at 02:01 to 1949-01-16 at 02:00, with the governor having the option to move |
| @@ -466,8 +477,8 @@ |
| # which established DST from April's last Sunday at 01:00 until September's |
| # last Sunday at 02:00. This was amended by 1962's Proposition 6, which changed |
| # the fall-back date to October's last Sunday. See: |
| -# http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1501&context=ca_ballot_props |
| -# http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1636&context=ca_ballot_props |
| +# https://repository.uchastings.edu/cgi/viewcontent.cgi?article=1501&context=ca_ballot_props |
| +# https://repository.uchastings.edu/cgi/viewcontent.cgi?article=1636&context=ca_ballot_props |
| # |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER |
| Rule CA 1948 only - Mar 14 2:01 1:00 D |
| @@ -482,22 +493,33 @@ |
| -8:00 US P%sT |
| |
| # Alaska |
| -# AK%sT is the modern abbreviation for -9:00 per USNO. |
| +# AK%sT is the modern abbreviation for -09 per USNO. |
| # |
| -# From Paul Eggert (2001-05-30): |
| +# From Paul Eggert (2017-06-15): |
| # Howse writes that Alaska switched from the Julian to the Gregorian calendar, |
| # and from east-of-GMT to west-of-GMT days, when the US bought it from Russia. |
| -# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian, |
| -# also a Friday. Include only the time zone part of this transition, |
| -# ignoring the switch from Julian to Gregorian, since we can't represent |
| -# the Julian calendar. |
| +# On Friday, 1867-10-18 (Gregorian), at precisely 15:30 local time, the |
| +# Russian forts and fleet at Sitka fired salutes to mark the ceremony of |
| +# formal transfer. See the Sacramento Daily Union (1867-11-14), p 3, col 2. |
| +# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=SDU18671114.2.12.1 |
| +# Sitka workers did not change their calendars until Sunday, 1867-10-20, |
| +# and so celebrated two Sundays that week. See: Ahllund T (tr Hallamaa P). |
| +# From the memoirs of a Finnish workman. Alaska History. 2006 Fall;21(2):1-25. |
| +# http://alaskahistoricalsociety.org/wp-content/uploads/2016/12/Ahllund-2006-Memoirs-of-a-Finnish-Workman.pdf |
| +# Include only the time zone part of this transition, ignoring the switch |
| +# from Julian to Gregorian, since we can't represent the Julian calendar. |
| # |
| -# As far as we know, none of the exact locations mentioned below were |
| +# As far as we know, of the locations mentioned below only Sitka was |
| # permanently inhabited in 1867 by anyone using either calendar. |
| -# (Yakutat was colonized by the Russians in 1799, but the settlement |
| -# was destroyed in 1805 by a Yakutat-kon war party.) However, there |
| -# were nearby inhabitants in some cases and for our purposes perhaps |
| -# it's best to simply use the official transition. |
| +# (Yakutat was colonized by the Russians in 1799, but the settlement was |
| +# destroyed in 1805 by a Yakutat-kon war party.) Many of Alaska's inhabitants |
| +# were unaware of the US acquisition of Alaska, much less of any calendar or |
| +# time change. However, the Russian-influenced part of Alaska did observe |
| +# Russian time, and it is more accurate to model this than to ignore it. |
| +# The database format requires an exact transition time; use the Russian |
| +# salute as a somewhat-arbitrary time for the formal transfer of control for |
| +# all of Alaska. Sitka's UTC offset is -9:01:13; adjust its 15:30 to the |
| +# local times of other Alaskan locations so that they change simultaneously. |
| |
| # From Paul Eggert (2014-07-18): |
| # One opinion of the early-1980s turmoil in Alaska over time zones and |
| @@ -550,10 +572,10 @@ |
| # It seems Metlakatla did go off PST on Sunday, November 1, changing |
| # their time to AKST and are going to follow Alaska's DST, switching |
| # between AKST and AKDT from now on.... |
| -# http://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/ |
| +# https://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/ |
| |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| -Zone America/Juneau 15:02:19 - LMT 1867 Oct 18 |
| +Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32 |
| -8:57:41 - LMT 1900 Aug 20 12:00 |
| -8:00 - PST 1942 |
| -8:00 US P%sT 1946 |
| @@ -563,7 +585,7 @@ |
| -8:00 US P%sT 1983 Oct 30 2:00 |
| -9:00 US Y%sT 1983 Nov 30 |
| -9:00 US AK%sT |
| -Zone America/Sitka 14:58:47 - LMT 1867 Oct 18 |
| +Zone America/Sitka 14:58:47 - LMT 1867 Oct 19 15:30 |
| -9:01:13 - LMT 1900 Aug 20 12:00 |
| -8:00 - PST 1942 |
| -8:00 US P%sT 1946 |
| @@ -571,7 +593,7 @@ |
| -8:00 US P%sT 1983 Oct 30 2:00 |
| -9:00 US Y%sT 1983 Nov 30 |
| -9:00 US AK%sT |
| -Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18 |
| +Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 19 15:44:55 |
| -8:46:18 - LMT 1900 Aug 20 12:00 |
| -8:00 - PST 1942 |
| -8:00 US P%sT 1946 |
| @@ -579,7 +601,7 @@ |
| -8:00 US P%sT 1983 Oct 30 2:00 |
| -8:00 - PST 2015 Nov 1 2:00 |
| -9:00 US AK%sT |
| -Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 |
| +Zone America/Yakutat 14:41:05 - LMT 1867 Oct 19 15:12:18 |
| -9:18:55 - LMT 1900 Aug 20 12:00 |
| -9:00 - YST 1942 |
| -9:00 US Y%sT 1946 |
| @@ -586,17 +608,15 @@ |
| -9:00 - YST 1969 |
| -9:00 US Y%sT 1983 Nov 30 |
| -9:00 US AK%sT |
| -Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18 |
| +Zone America/Anchorage 14:00:24 - LMT 1867 Oct 19 14:31:37 |
| -9:59:36 - LMT 1900 Aug 20 12:00 |
| - -10:00 - CAT 1942 |
| - -10:00 US CAT/CAWT 1945 Aug 14 23:00u |
| - -10:00 US CAT/CAPT 1946 # Peace |
| - -10:00 - CAT 1967 Apr |
| + -10:00 - AST 1942 |
| + -10:00 US A%sT 1967 Apr |
| -10:00 - AHST 1969 |
| -10:00 US AH%sT 1983 Oct 30 2:00 |
| -9:00 US Y%sT 1983 Nov 30 |
| -9:00 US AK%sT |
| -Zone America/Nome 12:58:21 - LMT 1867 Oct 18 |
| +Zone America/Nome 12:58:22 - LMT 1867 Oct 19 13:29:35 |
| -11:01:38 - LMT 1900 Aug 20 12:00 |
| -11:00 - NST 1942 |
| -11:00 US N%sT 1946 |
| @@ -605,7 +625,7 @@ |
| -11:00 US B%sT 1983 Oct 30 2:00 |
| -9:00 US Y%sT 1983 Nov 30 |
| -9:00 US AK%sT |
| -Zone America/Adak 12:13:21 - LMT 1867 Oct 18 |
| +Zone America/Adak 12:13:22 - LMT 1867 Oct 19 12:44:35 |
| -11:46:38 - LMT 1900 Aug 20 12:00 |
| -11:00 - NST 1942 |
| -11:00 US N%sT 1946 |
| @@ -641,7 +661,7 @@ |
| # "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225 |
| # of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09, |
| # the article is available at |
| -# http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf |
| +# https://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf |
| # and indicates that standard time was adopted effective noon, January |
| # 13, 1896 (page 218), that in "1933, the Legislature decreed daylight |
| # saving for the period between the last Sunday of each April and the |
| @@ -680,7 +700,6 @@ |
| -10:30 1:00 HDT 1945 Sep 30 2:00 |
| -10:30 - HST 1947 Jun 8 2:00 |
| -10:00 - HST |
| -Link Pacific/Honolulu Pacific/Johnston |
| |
| # Now we turn to US areas that have diverged from the consensus since 1970. |
| |
| @@ -741,7 +760,7 @@ |
| # Indiana |
| # |
| # For a map of Indiana's time zone regions, see: |
| -# http://en.wikipedia.org/wiki/Time_in_Indiana |
| +# https://en.wikipedia.org/wiki/Time_in_Indiana |
| # |
| # From Paul Eggert (2007-08-17): |
| # Since 1970, most of Indiana has been like America/Indiana/Indianapolis, |
| @@ -968,7 +987,7 @@ |
| # From Paul Eggert (2001-07-16): |
| # The final rule was published in the |
| # Federal Register 65, 160 (2000-08-17), pp 50154-50158. |
| -# http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22 |
| +# https://www.gpo.gov/fdsys/pkg/FR-2000-08-17/html/00-20854.htm |
| # |
| Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 |
| -6:00 US C%sT 1946 |
| @@ -994,7 +1013,7 @@ |
| # West Wendover, NV officially switched from Pacific to mountain time on |
| # 1999-10-31. See the |
| # Federal Register 64, 203 (1999-10-21), pp 56705-56707. |
| -# http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15 |
| +# https://www.gpo.gov/fdsys/pkg/FR-1999-10-21/html/99-27240.htm |
| # However, the Federal Register says that West Wendover already operated |
| # on mountain time, and the rule merely made this official; |
| # hence a separate tz entry is not needed. |
| @@ -1024,12 +1043,23 @@ |
| # one hour in 1914." This change is not in Shanks. We have no more |
| # info, so omit this for now. |
| # |
| +# From Paul Eggert (2017-07-26): |
| +# Although Shanks says Detroit observed DST in 1967 from 06-14 00:01 |
| +# until 10-29 00:01, I now see multiple reports that this is incorrect. |
| +# For example, according to a 50-year anniversary report about the 1967 |
| +# Detroit riots and a major-league doubleheader on 1967-07-23, "By the time |
| +# the last fly ball of the doubleheader settled into the glove of leftfielder |
| +# Lenny Green, it was after 7 p.m. Detroit did not observe daylight saving |
| +# time, so light was already starting to fail. Twilight was made even deeper |
| +# by billowing columns of smoke that ascended in an unbroken wall north of the |
| +# ballpark." See: Dow B. Detroit '67: As violence unfolded, Tigers played two |
| +# at home vs. Yankees. Detroit Free Press 2017-07-23. |
| +# https://www.freep.com/story/sports/mlb/tigers/2017/07/23/detroit-tigers-1967-riot-new-york-yankees/499951001/ |
| +# |
| # Most of Michigan observed DST from 1973 on, but was a bit late in 1975. |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER |
| Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D |
| Rule Detroit 1948 only - Sep lastSun 2:00 0 S |
| -Rule Detroit 1967 only - Jun 14 2:00 1:00 D |
| -Rule Detroit 1967 only - Oct lastSun 2:00 0 S |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Detroit -5:32:11 - LMT 1905 |
| -6:00 - CST 1915 May 15 2:00 |
| @@ -1068,7 +1098,7 @@ |
| ################################################################################ |
| |
| |
| -# From Paul Eggert (2014-10-31): |
| +# From Paul Eggert (2017-02-10): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -1075,8 +1105,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -1093,7 +1123,7 @@ |
| # [PDF] (1914-03) |
| # |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 |
| -# <http://www.jstor.org/stable/1774359>. |
| +# <https://www.jstor.org/stable/1774359>. |
| # |
| # See the 'europe' file for Greenland. |
| |
| @@ -1139,19 +1169,19 @@ |
| # The British Columbia government announced yesterday that it will |
| # adjust daylight savings next year to align with changes in the |
| # U.S. and the rest of Canada.... |
| -# http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm |
| +# https://archive.news.gov.bc.ca/releases/news_releases_2005-2009/2006AG0014-000330.htm |
| # ... |
| # Nova Scotia |
| # Daylight saving time will be extended by four weeks starting in 2007.... |
| -# http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf |
| +# https://www.novascotia.ca/just/regulations/rg2/2006/ma1206.pdf |
| # |
| # [For New Brunswick] the new legislation dictates that the time change is to |
| # be done at 02:00 instead of 00:01. |
| -# http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf |
| +# https://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf |
| # ... |
| # Manitoba has traditionally changed the clock every fall at 03:00. |
| # As of 2006, the transition is to take place one hour earlier at 02:00. |
| -# http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php |
| +# https://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php |
| # ... |
| # [Alberta, Ontario, Quebec] will follow US rules. |
| # http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM |
| @@ -1165,7 +1195,7 @@ |
| # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm |
| # ... |
| # Yukon |
| -# http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf |
| +# https://www.gov.yk.ca/legislation/regs/oic2006_127.pdf |
| # ... |
| # N.W.T. will follow US rules. Whoever maintains the government web site |
| # does not seem to believe in bookmarks. To see the news release, click the |
| @@ -1186,8 +1216,8 @@ |
| # time and daylight saving time arrangements in Canada circa 1998. |
| # |
| # National Research Council Canada maintains info about time zones and DST. |
| -# http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html |
| -# http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5 |
| +# https://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html |
| +# https://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5 |
| # Its unofficial information is often taken from Matthews and Vincent. |
| |
| # From Paul Eggert (2006-06-27): |
| @@ -1224,11 +1254,13 @@ |
| |
| # Newfoundland and Labrador |
| |
| -# From Paul Eggert (2000-10-02): |
| -# Matthews and Vincent (1998) write that Labrador should use NST/NDT, |
| -# but the only part of Labrador that follows the rules is the |
| -# southeast corner, including Port Hope Simpson and Mary's Harbour, |
| -# but excluding, say, Black Tickle. |
| +# From Paul Eggert (2017-10-14): |
| +# Legally Labrador should observe Newfoundland time; see: |
| +# McLeod J. Labrador time - legal or not? St. John's Telegram, 2017-10-07 |
| +# http://www.thetelegram.com/news/local/labrador-time--legal-or-not-154860/ |
| +# Matthews and Vincent (1998) write that the only part of Labrador |
| +# that follows the rules is the southeast corner, including Port Hope |
| +# Simpson and Mary's Harbour, but excluding, say, Black Tickle. |
| |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule StJohns 1917 only - Apr 8 2:00 1:00 D |
| @@ -1428,7 +1460,7 @@ |
| # http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm |
| # that the coastal strip from just east of Natashquan to Blanc-Sablon |
| # observes Atlantic standard time all year round. |
| -# http://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en |
| +# https://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en |
| # says this common practice was codified into law as of 2007. |
| # For lack of better info, guess this practice began around 1970, contra to |
| # Shanks & Pottenger who have this region observing AST/ADT. |
| @@ -1460,6 +1492,11 @@ |
| # earlier in June). |
| # |
| # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21). |
| +# |
| +# From Paul Eggert (2017-07-08): |
| +# For more on Orillia, see: Daubs K. Bold attempt at daylight saving |
| +# time became a comic failure in Orillia. Toronto Star 2017-07-08. |
| +# https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html |
| |
| # From Paul Eggert (1997-10-17): |
| # Mark Brader writes that an article in the 1997-10-14 Toronto Star |
| @@ -1951,7 +1988,7 @@ |
| # * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68, |
| # c. 7 defines Yukon standard time as UTC-9.... |
| # see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1). |
| -# [http://canlii.ca/t/7vhg] |
| +# [https://www.canlii.org/en/ca/laws/stat/rsc-1985-c-i-21/latest/rsc-1985-c-i-21.html] |
| # * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00. |
| # * O.I.C. 1980/02 established DST. |
| # * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00. |
| @@ -2016,7 +2053,7 @@ |
| # hours behind Greenwich Time. |
| # |
| # * Yukon Standard Time defined as Pacific Standard Time, YCO 1973/214 |
| -# http://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html |
| +# https://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html |
| # C.O. 1973/214 INTERPRETATION ACT ... |
| # |
| # 1. Effective October 28, 1973 Commissioner's Order 1967/59 is hereby |
| @@ -2031,7 +2068,7 @@ |
| # http://? - no online source found |
| # |
| # * Yukon Daylight Saving Time, YOIC 1987/56 |
| -# http://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html |
| +# https://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html |
| # O.I.C. 1987/056 INTERPRETATION ACT ... |
| # |
| # In every year between |
| @@ -2043,7 +2080,7 @@ |
| # Dated ... 9th day of March, A.D., 1987. |
| # |
| # * Yukon Daylight Saving Time 2006, YOIC 2006/127 |
| -# http://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.html |
| +# https://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.html |
| # O.I.C. 2006/127 INTERPRETATION ACT ... |
| # |
| # 1. In Yukon each year the time for general purposes shall be 7 hours |
| @@ -2057,7 +2094,7 @@ |
| # 3. This order comes into force January 1, 2007. |
| # |
| # * Interpretation Act, RSY 2002, c 125 |
| -# http://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html |
| +# https://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html |
| |
| # From Rives McDow (1999-09-04): |
| # Nunavut ... moved ... to incorporate the whole territory into one time zone. |
| @@ -2100,7 +2137,7 @@ |
| |
| # From Michaela Rodrigue, writing in the |
| # Nunatsiaq News (1999-11-19): |
| -# http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html |
| +# http://www.nunatsiaqonline.ca/archives/nunavut991130/nvt91119_17.html |
| # Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones, |
| # central - or Nunavut time - for government offices, and eastern time |
| # for municipal offices and schools.... Igloolik [was similar but then] |
| @@ -2118,7 +2155,7 @@ |
| # Central Time and Southampton Island [in the Central zone] is not |
| # required to use daylight savings. |
| |
| -# From <http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html> |
| +# From <http://www.nunatsiaqonline.ca/archives/nunavut001130/nvt21110_02.html> |
| # Nunavut now has two time zones (2000-11-10): |
| # The Nunavut government would allow its employees in Kugluktuk and |
| # Cambridge Bay to operate on central time year-round, putting them |
| @@ -2449,7 +2486,7 @@ |
| # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html |
| # |
| # Our page: |
| -# http://www.timeanddate.com/news/time/north-mexico-dst-change.html |
| +# https://www.timeanddate.com/news/time/north-mexico-dst-change.html |
| |
| # From Arthur David Olson (2010-01-20): |
| # The page |
| @@ -2734,15 +2771,15 @@ |
| # Belize |
| # Whitman entirely disagrees with Shanks; go with Shanks & Pottenger. |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD |
| -Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S |
| -Rule Belize 1973 only - Dec 5 0:00 1:00 D |
| -Rule Belize 1974 only - Feb 9 0:00 0 S |
| -Rule Belize 1982 only - Dec 18 0:00 1:00 D |
| -Rule Belize 1983 only - Feb 12 0:00 0 S |
| +Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 -0530 |
| +Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 CST |
| +Rule Belize 1973 only - Dec 5 0:00 1:00 CDT |
| +Rule Belize 1974 only - Feb 9 0:00 0 CST |
| +Rule Belize 1982 only - Dec 18 0:00 1:00 CDT |
| +Rule Belize 1983 only - Feb 12 0:00 0 CST |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Belize -5:52:48 - LMT 1912 Apr |
| - -6:00 Belize C%sT |
| + -6:00 Belize %s |
| |
| # Bermuda |
| |
| @@ -2868,7 +2905,7 @@ |
| # http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm |
| # |
| # Some more background information is posted here: |
| -# http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html |
| +# https://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html |
| # |
| # The article also says that Cuba has been observing DST since 1963, |
| # while Shanks (and tzdata) has 1965 as the first date (except in the |
| @@ -2915,7 +2952,7 @@ |
| # http://granma.co.cu/2011/03/08/nacional/artic01.html |
| # |
| # Our info: |
| -# http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html |
| +# https://www.timeanddate.com/news/time/cuba-starts-dst-2011.html |
| # |
| # From Steffen Thorsen (2011-10-30) |
| # Cuba will end DST two weeks later this year. Instead of going back |
| @@ -2925,7 +2962,7 @@ |
| # http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html |
| # |
| # Our page: |
| -# http://www.timeanddate.com/news/time/cuba-time-changes-2011.html |
| +# https://www.timeanddate.com/news/time/cuba-time-changes-2011.html |
| # |
| # From Steffen Thorsen (2012-03-01) |
| # According to Radio Reloj, Cuba will start DST on Midnight between March |
| @@ -2935,7 +2972,7 @@ |
| # http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril |
| # |
| # Our info on it: |
| -# http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html |
| +# https://www.timeanddate.com/news/time/cuba-starts-dst-2012.html |
| |
| # From Steffen Thorsen (2012-11-03): |
| # Radio Reloj and many other sources report that Cuba is changing back |
| @@ -3014,16 +3051,16 @@ |
| |
| |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| -Rule DR 1966 only - Oct 30 0:00 1:00 D |
| -Rule DR 1967 only - Feb 28 0:00 0 S |
| -Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD |
| -Rule DR 1970 only - Feb 21 0:00 0 S |
| -Rule DR 1971 only - Jan 20 0:00 0 S |
| -Rule DR 1972 1974 - Jan 21 0:00 0 S |
| +Rule DR 1966 only - Oct 30 0:00 1:00 EDT |
| +Rule DR 1967 only - Feb 28 0:00 0 EST |
| +Rule DR 1969 1973 - Oct lastSun 0:00 0:30 -0430 |
| +Rule DR 1970 only - Feb 21 0:00 0 EST |
| +Rule DR 1971 only - Jan 20 0:00 0 EST |
| +Rule DR 1972 1974 - Jan 21 0:00 0 EST |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Santo_Domingo -4:39:36 - LMT 1890 |
| -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT |
| - -5:00 DR E%sT 1974 Oct 27 |
| + -5:00 DR %s 1974 Oct 27 |
| -4:00 - AST 2000 Oct 29 2:00 |
| -5:00 US E%sT 2000 Dec 3 1:00 |
| -4:00 - AST |
| @@ -3130,10 +3167,16 @@ |
| # From Steffen Thorsen (2016-03-12): |
| # Jean Antoine, editor of www.haiti-reference.com informed us that Haiti |
| # are not going on DST this year. Several other resources confirm this: ... |
| -# http://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html |
| -# http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/ |
| +# https://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html |
| +# https://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/ |
| # http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-cette-annee/ |
| |
| +# From Steffen Thorsen (2017-03-12): |
| +# We have received 4 mails from different people telling that Haiti |
| +# has started DST again today, and this source seems to confirm that, |
| +# I have not been able to find a more authoritative source: |
| +# https://www.haitilibre.com/en/news-20319-haiti-notices-time-change-in-haiti.html |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Haiti 1983 only - May 8 0:00 1:00 D |
| Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D |
| @@ -3146,6 +3189,8 @@ |
| Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S |
| Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D |
| Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S |
| +Rule Haiti 2017 max - Mar Sun>=8 2:00 1:00 D |
| +Rule Haiti 2017 max - Nov Sun>=1 2:00 0 S |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Port-au-Prince -4:49:20 - LMT 1890 |
| -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT |
| @@ -3313,8 +3358,8 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre |
| -4:00 - AST 1980 May |
| - -3:00 - PMST 1987 # Pierre & Miquelon Time |
| - -3:00 Canada PM%sT |
| + -3:00 - -03 1987 |
| + -3:00 Canada -03/-02 |
| |
| # St Vincent and the Grenadines |
| # See America/Port_of_Spain. |
| @@ -3322,7 +3367,7 @@ |
| # Turks and Caicos |
| # |
| # From Chris Dunn in |
| -# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007 |
| +# https://bugs.debian.org/415007 |
| # (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the |
| # daylight saving dates for time changes have been adjusted to match |
| # the recent U.S. change of dates. |
| @@ -3344,12 +3389,25 @@ |
| # "permanent daylight saving time" by one year.... |
| # http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm |
| # |
| +# From the Turks & Caicos Cabinet (2017-07-20), heads-up from Steffen Thorsen: |
| +# ... agreed to the reintroduction in TCI of Daylight Saving Time (DST) |
| +# during the summer months and Standard Time, also known as Local |
| +# Time, during the winter months with effect from April 2018 ... |
| +# https://www.gov.uk/government/news/turks-and-caicos-post-cabinet-meeting-statement--3 |
| +# |
| +# From Paul Eggert (2017-08-26): |
| +# The date of effect of the spring 2018 change appears to be March 11, |
| +# which makes more sense. See: Hamilton D. Time change back |
| +# by March 2018 for TCI. Magnetic Media. 2017-08-25. |
| +# http://magneticmediatv.com/2017/08/time-change-back-by-march-2018-for-tci/ |
| +# |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Grand_Turk -4:44:32 - LMT 1890 |
| -5:07:11 - KMT 1912 Feb # Kingston Mean Time |
| -5:00 - EST 1979 |
| -5:00 US E%sT 2015 Nov Sun>=1 2:00 |
| - -4:00 - AST |
| + -4:00 - AST 2018 Mar 11 3:00 |
| + -5:00 US E%sT |
| |
| # British Virgin Is |
| # Virgin Is |
| Index: contrib/tzdata/southamerica |
| =================================================================== |
| --- contrib/tzdata/southamerica (版本 324740) |
| +++ contrib/tzdata/southamerica (版本 325322) |
| @@ -6,7 +6,7 @@ |
| # tz@iana.org for general use in the future). For more, please see |
| # the file CONTRIBUTING in the tz distribution. |
| |
| -# From Paul Eggert (2014-10-31): |
| +# From Paul Eggert (2016-12-05): |
| # |
| # Unless otherwise specified, the source for data through 1990 is: |
| # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
| @@ -13,8 +13,8 @@ |
| # San Diego: ACS Publications, Inc. (2003). |
| # Unfortunately this book contains many errors and cites no sources. |
| # |
| -# Gwillim Law writes that a good source |
| -# for recent time zone data is the International Air Transport |
| +# Many years ago Gwillim Law wrote that a good source |
| +# for time zone data was the International Air Transport |
| # Association's Standard Schedules Information Manual (IATA SSIM), |
| # published semiannually. Law sent in several helpful summaries |
| # of the IATA's data after 1990. Except where otherwise noted, |
| @@ -22,34 +22,12 @@ |
| # |
| # For data circa 1899, a common source is: |
| # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. |
| -# http://www.jstor.org/stable/1774359 |
| +# https://www.jstor.org/stable/1774359 |
| # |
| -# Earlier editions of these tables used the North American style (e.g. ARST and |
| -# ARDT for Argentine Standard and Daylight Time), but the following quote |
| -# suggests that it's better to use European style (e.g. ART and ARST). |
| -# I suggest the use of _Summer time_ instead of the more cumbersome |
| -# _daylight-saving time_. _Summer time_ seems to be in general use |
| -# in Europe and South America. |
| -# -- E O Cutler, _New York Times_ (1937-02-14), quoted in |
| -# H L Mencken, _The American Language: Supplement I_ (1960), p 466 |
| -# |
| -# Earlier editions of these tables also used the North American style |
| -# for time zones in Brazil, but this was incorrect, as Brazilians say |
| -# "summer time". Reinaldo Goulart, a São Paulo businessman active in |
| -# the railroad sector, writes (1999-07-06): |
| -# The subject of time zones is currently a matter of discussion/debate in |
| -# Brazil. Let's say that "the Brasília time" is considered the |
| -# "official time" because Brasília is the capital city. |
| -# The other three time zones are called "Brasília time "minus one" or |
| -# "plus one" or "plus two". As far as I know there is no such |
| -# name/designation as "Eastern Time" or "Central Time". |
| -# So I invented the following (English-language) abbreviations for now. |
| -# Corrections are welcome! |
| -# std dst |
| -# -2:00 FNT FNST Fernando de Noronha |
| -# -3:00 BRT BRST Brasília |
| -# -4:00 AMT AMST Amazon |
| -# -5:00 ACT ACST Acre |
| +# These tables use numeric abbreviations like -03 and -0330 for |
| +# integer hour and minute UTC offsets. Although earlier editions used |
| +# alphabetic time zone abbreviations, these abbreviations were |
| +# invented and did not reflect common practice. |
| |
| ############################################################################### |
| |
| @@ -287,8 +265,8 @@ |
| # |
| # Es inminente que en San Luis atrasen una hora los relojes |
| # (It is imminent in San Luis clocks one hour delay) |
| -# http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html |
| -# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html |
| +# https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html |
| +# http://www.worldtimezone.com/dst_news/dst_news_argentina02.html |
| |
| # From Jesper Nørgaard Welen (2008-01-18): |
| # The page of the San Luis provincial government |
| @@ -384,12 +362,6 @@ |
| # |
| # So I guess a new set of rules, besides "Arg", must be made and the last |
| # America/Argentina/San_Luis entries should change to use these... |
| -# |
| -# I'm enclosing a patch that does what I say... regretfully, the San Luis |
| -# timezone must be called "WART/WARST" even when most of the time (like, |
| -# right now) WARST == ART... that is, since last Sunday, all the country |
| -# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest |
| -# of the country calls it "ART". |
| # ... |
| |
| # From Alexander Krivenyshev (2010-04-09): |
| @@ -413,7 +385,7 @@ |
| # Perhaps San Luis operates on the legal fiction that it is at -04 |
| # with perpetual summer time, but ordinary usage typically seems to |
| # just say it's at -03; see, for example, |
| -# http://es.wikipedia.org/wiki/Hora_oficial_argentina |
| +# https://es.wikipedia.org/wiki/Hora_oficial_argentina |
| # We've documented similar situations as being plain changes to |
| # standard time, so let's do that here too. This does not change UTC |
| # offsets, only tm_isdst and the time zone abbreviations. One minor |
| @@ -428,11 +400,11 @@ |
| # Buenos Aires (BA), Capital Federal (CF), |
| Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May # Córdoba Mean Time |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 Arg AR%sT |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 Arg -03/-02 |
| # |
| # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), |
| # Chaco (CC), Formosa (FM), Santiago del Estero (SE) |
| @@ -446,113 +418,113 @@ |
| # |
| Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 3 |
| - -4:00 - WART 1991 Oct 20 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 Arg AR%sT |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 3 |
| + -4:00 - -04 1991 Oct 20 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 Arg -03/-02 |
| # |
| # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) |
| Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 3 |
| - -4:00 - WART 1991 Oct 20 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 3 |
| + -4:00 - -04 1991 Oct 20 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # Tucumán (TM) |
| Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 3 |
| - -4:00 - WART 1991 Oct 20 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 Jun 1 |
| - -4:00 - WART 2004 Jun 13 |
| - -3:00 Arg AR%sT |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 3 |
| + -4:00 - -04 1991 Oct 20 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 Jun 1 |
| + -4:00 - -04 2004 Jun 13 |
| + -3:00 Arg -03/-02 |
| # |
| # La Rioja (LR) |
| Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 1 |
| - -4:00 - WART 1991 May 7 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 Jun 1 |
| - -4:00 - WART 2004 Jun 20 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 1 |
| + -4:00 - -04 1991 May 7 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 Jun 1 |
| + -4:00 - -04 2004 Jun 20 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # San Juan (SJ) |
| Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 1 |
| - -4:00 - WART 1991 May 7 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 May 31 |
| - -4:00 - WART 2004 Jul 25 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 1 |
| + -4:00 - -04 1991 May 7 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 May 31 |
| + -4:00 - -04 2004 Jul 25 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # Jujuy (JY) |
| Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1990 Mar 4 |
| - -4:00 - WART 1990 Oct 28 |
| - -4:00 1:00 WARST 1991 Mar 17 |
| - -4:00 - WART 1991 Oct 6 |
| - -3:00 1:00 ARST 1992 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1990 Mar 4 |
| + -4:00 - -04 1990 Oct 28 |
| + -4:00 1:00 -03 1991 Mar 17 |
| + -4:00 - -04 1991 Oct 6 |
| + -3:00 1:00 -02 1992 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # Catamarca (CT), Chubut (CH) |
| Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1991 Mar 3 |
| - -4:00 - WART 1991 Oct 20 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 Jun 1 |
| - -4:00 - WART 2004 Jun 20 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1991 Mar 3 |
| + -4:00 - -04 1991 Oct 20 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 Jun 1 |
| + -4:00 - -04 2004 Jun 20 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # Mendoza (MZ) |
| Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1990 Mar 4 |
| - -4:00 - WART 1990 Oct 15 |
| - -4:00 1:00 WARST 1991 Mar 1 |
| - -4:00 - WART 1991 Oct 15 |
| - -4:00 1:00 WARST 1992 Mar 1 |
| - -4:00 - WART 1992 Oct 18 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 May 23 |
| - -4:00 - WART 2004 Sep 26 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1990 Mar 4 |
| + -4:00 - -04 1990 Oct 15 |
| + -4:00 1:00 -03 1991 Mar 1 |
| + -4:00 - -04 1991 Oct 15 |
| + -4:00 1:00 -03 1992 Mar 1 |
| + -4:00 - -04 1992 Oct 18 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 May 23 |
| + -4:00 - -04 2004 Sep 26 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # San Luis (SL) |
| |
| @@ -561,44 +533,44 @@ |
| |
| Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 |
| -4:16:48 - CMT 1920 May |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1990 |
| - -3:00 1:00 ARST 1990 Mar 14 |
| - -4:00 - WART 1990 Oct 15 |
| - -4:00 1:00 WARST 1991 Mar 1 |
| - -4:00 - WART 1991 Jun 1 |
| - -3:00 - ART 1999 Oct 3 |
| - -4:00 1:00 WARST 2000 Mar 3 |
| - -3:00 - ART 2004 May 31 |
| - -4:00 - WART 2004 Jul 25 |
| - -3:00 Arg AR%sT 2008 Jan 21 |
| - -4:00 SanLuis WAR%sT 2009 Oct 11 |
| - -3:00 - ART |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1990 |
| + -3:00 1:00 -02 1990 Mar 14 |
| + -4:00 - -04 1990 Oct 15 |
| + -4:00 1:00 -03 1991 Mar 1 |
| + -4:00 - -04 1991 Jun 1 |
| + -3:00 - -03 1999 Oct 3 |
| + -4:00 1:00 -03 2000 Mar 3 |
| + -3:00 - -03 2004 May 31 |
| + -4:00 - -04 2004 Jul 25 |
| + -3:00 Arg -03/-02 2008 Jan 21 |
| + -4:00 SanLuis -04/-03 2009 Oct 11 |
| + -3:00 - -03 |
| # |
| # Santa Cruz (SC) |
| Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 |
| - -4:16:48 - CMT 1920 May # Córdoba Mean Time |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 Jun 1 |
| - -4:00 - WART 2004 Jun 20 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:16:48 - CMT 1920 May |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 Jun 1 |
| + -4:00 - -04 2004 Jun 20 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| # |
| # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) |
| Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 |
| - -4:16:48 - CMT 1920 May # Córdoba Mean Time |
| - -4:00 - ART 1930 Dec |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1999 Oct 3 |
| - -4:00 Arg AR%sT 2000 Mar 3 |
| - -3:00 - ART 2004 May 30 |
| - -4:00 - WART 2004 Jun 20 |
| - -3:00 Arg AR%sT 2008 Oct 18 |
| - -3:00 - ART |
| + -4:16:48 - CMT 1920 May |
| + -4:00 - -04 1930 Dec |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1999 Oct 3 |
| + -4:00 Arg -04/-03 2000 Mar 3 |
| + -3:00 - -03 2004 May 30 |
| + -4:00 - -04 2004 Jun 20 |
| + -3:00 Arg -03/-02 2008 Oct 18 |
| + -3:00 - -03 |
| |
| # Aruba |
| Link America/Curacao America/Aruba |
| @@ -608,7 +580,7 @@ |
| Zone America/La_Paz -4:32:36 - LMT 1890 |
| -4:32:36 - CMT 1931 Oct 15 # Calamarca MT |
| -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST |
| - -4:00 - BOT # Bolivia Time |
| + -4:00 - -04 |
| |
| # Brazil |
| |
| @@ -744,7 +716,7 @@ |
| # (Portuguese) |
| # |
| # We have a written a short article about it as well: |
| -# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html |
| +# https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html |
| # |
| # From Alexander Krivenyshev (2011-10-04): |
| # State Bahia will return to Daylight savings time this year after 8 years off. |
| @@ -753,7 +725,7 @@ |
| |
| # In Portuguese: |
| # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html |
| -# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html |
| +# https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html |
| |
| # From Guilherme Bernardes Rodrigues (2011-10-07): |
| # There is news in the media, however there is still no decree about it. |
| @@ -779,16 +751,16 @@ |
| |
| # From Rodrigo Severo (2012-10-16): |
| # Tocantins state will have DST. |
| -# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html |
| +# https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html |
| |
| # From Steffen Thorsen (2013-09-20): |
| # Tocantins in Brazil is very likely not to observe DST from October.... |
| # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto |
| # We will keep this article updated when this is confirmed: |
| -# http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html |
| +# https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html |
| |
| # From Steffen Thorsen (2013-10-17): |
| -# http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html |
| +# https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html |
| # Senator Jorge Viana announced that Acre will change time zone on November 10. |
| # He did not specify the time of the change, nor if western parts of Amazonas |
| # will change as well. |
| @@ -960,12 +932,12 @@ |
| # |
| # Fernando de Noronha (administratively part of PE) |
| Zone America/Noronha -2:09:40 - LMT 1914 |
| - -2:00 Brazil FN%sT 1990 Sep 17 |
| - -2:00 - FNT 1999 Sep 30 |
| - -2:00 Brazil FN%sT 2000 Oct 15 |
| - -2:00 - FNT 2001 Sep 13 |
| - -2:00 Brazil FN%sT 2002 Oct 1 |
| - -2:00 - FNT |
| + -2:00 Brazil -02/-01 1990 Sep 17 |
| + -2:00 - -02 1999 Sep 30 |
| + -2:00 Brazil -02/-01 2000 Oct 15 |
| + -2:00 - -02 2001 Sep 13 |
| + -2:00 Brazil -02/-01 2002 Oct 1 |
| + -2:00 - -02 |
| # Other Atlantic islands have no permanent settlement. |
| # These include Trindade and Martim Vaz (administratively part of ES), |
| # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). |
| @@ -978,119 +950,119 @@ |
| # In the north a very small part from the river Javary (now Jari I guess, |
| # the border with Amapá) to the Amazon, then to the Xingu. |
| Zone America/Belem -3:13:56 - LMT 1914 |
| - -3:00 Brazil BR%sT 1988 Sep 12 |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 1988 Sep 12 |
| + -3:00 - -03 |
| # |
| # west Pará (PA) |
| # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. |
| Zone America/Santarem -3:38:48 - LMT 1914 |
| - -4:00 Brazil AM%sT 1988 Sep 12 |
| - -4:00 - AMT 2008 Jun 24 0:00 |
| - -3:00 - BRT |
| + -4:00 Brazil -04/-03 1988 Sep 12 |
| + -4:00 - -04 2008 Jun 24 0:00 |
| + -3:00 - -03 |
| # |
| # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), |
| # Paraíba (PB) |
| Zone America/Fortaleza -2:34:00 - LMT 1914 |
| - -3:00 Brazil BR%sT 1990 Sep 17 |
| - -3:00 - BRT 1999 Sep 30 |
| - -3:00 Brazil BR%sT 2000 Oct 22 |
| - -3:00 - BRT 2001 Sep 13 |
| - -3:00 Brazil BR%sT 2002 Oct 1 |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 1990 Sep 17 |
| + -3:00 - -03 1999 Sep 30 |
| + -3:00 Brazil -03/-02 2000 Oct 22 |
| + -3:00 - -03 2001 Sep 13 |
| + -3:00 Brazil -03/-02 2002 Oct 1 |
| + -3:00 - -03 |
| # |
| # Pernambuco (PE) (except Atlantic islands) |
| Zone America/Recife -2:19:36 - LMT 1914 |
| - -3:00 Brazil BR%sT 1990 Sep 17 |
| - -3:00 - BRT 1999 Sep 30 |
| - -3:00 Brazil BR%sT 2000 Oct 15 |
| - -3:00 - BRT 2001 Sep 13 |
| - -3:00 Brazil BR%sT 2002 Oct 1 |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 1990 Sep 17 |
| + -3:00 - -03 1999 Sep 30 |
| + -3:00 Brazil -03/-02 2000 Oct 15 |
| + -3:00 - -03 2001 Sep 13 |
| + -3:00 Brazil -03/-02 2002 Oct 1 |
| + -3:00 - -03 |
| # |
| # Tocantins (TO) |
| Zone America/Araguaina -3:12:48 - LMT 1914 |
| - -3:00 Brazil BR%sT 1990 Sep 17 |
| - -3:00 - BRT 1995 Sep 14 |
| - -3:00 Brazil BR%sT 2003 Sep 24 |
| - -3:00 - BRT 2012 Oct 21 |
| - -3:00 Brazil BR%sT 2013 Sep |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 1990 Sep 17 |
| + -3:00 - -03 1995 Sep 14 |
| + -3:00 Brazil -03/-02 2003 Sep 24 |
| + -3:00 - -03 2012 Oct 21 |
| + -3:00 Brazil -03/-02 2013 Sep |
| + -3:00 - -03 |
| # |
| # Alagoas (AL), Sergipe (SE) |
| Zone America/Maceio -2:22:52 - LMT 1914 |
| - -3:00 Brazil BR%sT 1990 Sep 17 |
| - -3:00 - BRT 1995 Oct 13 |
| - -3:00 Brazil BR%sT 1996 Sep 4 |
| - -3:00 - BRT 1999 Sep 30 |
| - -3:00 Brazil BR%sT 2000 Oct 22 |
| - -3:00 - BRT 2001 Sep 13 |
| - -3:00 Brazil BR%sT 2002 Oct 1 |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 1990 Sep 17 |
| + -3:00 - -03 1995 Oct 13 |
| + -3:00 Brazil -03/-02 1996 Sep 4 |
| + -3:00 - -03 1999 Sep 30 |
| + -3:00 Brazil -03/-02 2000 Oct 22 |
| + -3:00 - -03 2001 Sep 13 |
| + -3:00 Brazil -03/-02 2002 Oct 1 |
| + -3:00 - -03 |
| # |
| # Bahia (BA) |
| # There are too many Salvadors elsewhere, so use America/Bahia instead |
| # of America/Salvador. |
| Zone America/Bahia -2:34:04 - LMT 1914 |
| - -3:00 Brazil BR%sT 2003 Sep 24 |
| - -3:00 - BRT 2011 Oct 16 |
| - -3:00 Brazil BR%sT 2012 Oct 21 |
| - -3:00 - BRT |
| + -3:00 Brazil -03/-02 2003 Sep 24 |
| + -3:00 - -03 2011 Oct 16 |
| + -3:00 Brazil -03/-02 2012 Oct 21 |
| + -3:00 - -03 |
| # |
| # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), |
| # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), |
| # Santa Catarina (SC), Rio Grande do Sul (RS) |
| Zone America/Sao_Paulo -3:06:28 - LMT 1914 |
| - -3:00 Brazil BR%sT 1963 Oct 23 0:00 |
| - -3:00 1:00 BRST 1964 |
| - -3:00 Brazil BR%sT |
| + -3:00 Brazil -03/-02 1963 Oct 23 0:00 |
| + -3:00 1:00 -02 1964 |
| + -3:00 Brazil -03/-02 |
| # |
| # Mato Grosso do Sul (MS) |
| Zone America/Campo_Grande -3:38:28 - LMT 1914 |
| - -4:00 Brazil AM%sT |
| + -4:00 Brazil -04/-03 |
| # |
| # Mato Grosso (MT) |
| Zone America/Cuiaba -3:44:20 - LMT 1914 |
| - -4:00 Brazil AM%sT 2003 Sep 24 |
| - -4:00 - AMT 2004 Oct 1 |
| - -4:00 Brazil AM%sT |
| + -4:00 Brazil -04/-03 2003 Sep 24 |
| + -4:00 - -04 2004 Oct 1 |
| + -4:00 Brazil -04/-03 |
| # |
| # Rondônia (RO) |
| Zone America/Porto_Velho -4:15:36 - LMT 1914 |
| - -4:00 Brazil AM%sT 1988 Sep 12 |
| - -4:00 - AMT |
| + -4:00 Brazil -04/-03 1988 Sep 12 |
| + -4:00 - -04 |
| # |
| # Roraima (RR) |
| Zone America/Boa_Vista -4:02:40 - LMT 1914 |
| - -4:00 Brazil AM%sT 1988 Sep 12 |
| - -4:00 - AMT 1999 Sep 30 |
| - -4:00 Brazil AM%sT 2000 Oct 15 |
| - -4:00 - AMT |
| + -4:00 Brazil -04/-03 1988 Sep 12 |
| + -4:00 - -04 1999 Sep 30 |
| + -4:00 Brazil -04/-03 2000 Oct 15 |
| + -4:00 - -04 |
| # |
| # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto |
| # The great circle line from Tabatinga to Porto Acre divides |
| # east from west Amazonas. |
| Zone America/Manaus -4:00:04 - LMT 1914 |
| - -4:00 Brazil AM%sT 1988 Sep 12 |
| - -4:00 - AMT 1993 Sep 28 |
| - -4:00 Brazil AM%sT 1994 Sep 22 |
| - -4:00 - AMT |
| + -4:00 Brazil -04/-03 1988 Sep 12 |
| + -4:00 - -04 1993 Sep 28 |
| + -4:00 Brazil -04/-03 1994 Sep 22 |
| + -4:00 - -04 |
| # |
| # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, |
| # Eirunepé, Envira, Ipixuna |
| Zone America/Eirunepe -4:39:28 - LMT 1914 |
| - -5:00 Brazil AC%sT 1988 Sep 12 |
| - -5:00 - ACT 1993 Sep 28 |
| - -5:00 Brazil AC%sT 1994 Sep 22 |
| - -5:00 - ACT 2008 Jun 24 0:00 |
| - -4:00 - AMT 2013 Nov 10 |
| - -5:00 - ACT |
| + -5:00 Brazil -05/-04 1988 Sep 12 |
| + -5:00 - -05 1993 Sep 28 |
| + -5:00 Brazil -05/-04 1994 Sep 22 |
| + -5:00 - -05 2008 Jun 24 0:00 |
| + -4:00 - -04 2013 Nov 10 |
| + -5:00 - -05 |
| # |
| # Acre (AC) |
| Zone America/Rio_Branco -4:31:12 - LMT 1914 |
| - -5:00 Brazil AC%sT 1988 Sep 12 |
| - -5:00 - ACT 2008 Jun 24 0:00 |
| - -4:00 - AMT 2013 Nov 10 |
| - -5:00 - ACT |
| + -5:00 Brazil -05/-04 1988 Sep 12 |
| + -5:00 - -05 2008 Jun 24 0:00 |
| + -4:00 - -04 2013 Nov 10 |
| + -5:00 - -05 |
| |
| # Chile |
| |
| @@ -1104,18 +1076,18 @@ |
| # the following source, cited by Oscar van Vlijmen (2006-10-08): |
| # [1] Chile Law |
| # http://www.webexhibits.org/daylightsaving/chile.html |
| -# This contains a copy of a this official table: |
| +# This contains a copy of this official table: |
| # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) |
| -# http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm |
| +# https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm |
| # [1] needs several corrections, though. |
| # |
| # The first set of corrections is from: |
| # [2] History of the Official Time of Chile |
| # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: |
| -# http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html |
| +# https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html |
| # This is an English translation of: |
| # Historia de la hora oficial de Chile (retrieved 2012-10-24). See: |
| -# http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm |
| +# https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm |
| # A fancier Spanish version (requiring mouse-clicking) is at: |
| # http://www.horaoficial.cl/historia_hora.html |
| # Conflicts between [1] and [2] were resolved as follows: |
| @@ -1235,6 +1207,18 @@ |
| # to mean 24:00 mainland time, not 24:00 local time, so that Easter |
| # Island is always two hours behind the mainland. |
| |
| +# From Juan Correa (2016-12-04): |
| +# Magallanes region ... will keep DST (UTC -3) all year round.... |
| +# http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx |
| +# |
| +# From Deborah Goldsmith (2017-01-19): |
| +# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf |
| +# From Paul Eggert (2017-01-19): |
| +# The above says the Magallanes change expires 2019-05-11 at 24:00, |
| +# so in theory, they will revert to -04/-03 after that, which means |
| +# they will switch from -03 to -04 one hour after Santiago does that day. |
| +# For now, assume that they will not revert. |
| + |
| # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| Rule Chile 1927 1931 - Sep 1 0:00 1:00 S |
| Rule Chile 1928 1932 - Apr 1 0:00 0 - |
| @@ -1275,22 +1259,35 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Santiago -4:42:46 - LMT 1890 |
| -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time |
| - -5:00 - CLT 1916 Jul 1 # Chile Time |
| + -5:00 - -05 1916 Jul 1 |
| -4:42:46 - SMT 1918 Sep 10 |
| - -4:00 - CLT 1919 Jul 1 |
| + -4:00 - -04 1919 Jul 1 |
| -4:42:46 - SMT 1927 Sep 1 |
| - -5:00 Chile CL%sT 1932 Sep 1 |
| - -4:00 - CLT 1942 Jun 1 |
| - -5:00 - CLT 1942 Aug 1 |
| - -4:00 - CLT 1946 Jul 15 |
| - -4:00 1:00 CLST 1946 Sep 1 # central Chile |
| - -4:00 - CLT 1947 Apr 1 |
| - -5:00 - CLT 1947 May 21 23:00 |
| - -4:00 Chile CL%sT |
| + -5:00 Chile -05/-04 1932 Sep 1 |
| + -4:00 - -04 1942 Jun 1 |
| + -5:00 - -05 1942 Aug 1 |
| + -4:00 - -04 1946 Jul 15 |
| + -4:00 1:00 -03 1946 Sep 1 # central Chile |
| + -4:00 - -04 1947 Apr 1 |
| + -5:00 - -05 1947 May 21 23:00 |
| + -4:00 Chile -04/-03 |
| +Zone America/Punta_Arenas -4:43:40 - LMT 1890 |
| + -4:42:46 - SMT 1910 Jan 10 |
| + -5:00 - -05 1916 Jul 1 |
| + -4:42:46 - SMT 1918 Sep 10 |
| + -4:00 - -04 1919 Jul 1 |
| + -4:42:46 - SMT 1927 Sep 1 |
| + -5:00 Chile -05/-04 1932 Sep 1 |
| + -4:00 - -04 1942 Jun 1 |
| + -5:00 - -05 1942 Aug 1 |
| + -4:00 - -04 1947 Apr 1 |
| + -5:00 - -05 1947 May 21 23:00 |
| + -4:00 Chile -04/-03 2016 Dec 4 |
| + -3:00 - -03 |
| Zone Pacific/Easter -7:17:28 - LMT 1890 |
| -7:17:28 - EMT 1932 Sep # Easter Mean Time |
| - -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time |
| - -6:00 Chile EAS%sT |
| + -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time |
| + -6:00 Chile -06/-05 |
| # |
| # Salas y Gómez Island is uninhabited. |
| # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, |
| @@ -1310,9 +1307,10 @@ |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Antarctica/Palmer 0 - -00 1965 |
| - -4:00 Arg AR%sT 1969 Oct 5 |
| - -3:00 Arg AR%sT 1982 May |
| - -4:00 Chile CL%sT |
| + -4:00 Arg -04/-03 1969 Oct 5 |
| + -3:00 Arg -03/-02 1982 May |
| + -4:00 Chile -04/-03 2016 Dec 4 |
| + -3:00 - -03 |
| |
| # Colombia |
| |
| @@ -1325,7 +1323,7 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 |
| -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time |
| - -5:00 CO CO%sT # Colombia Time |
| + -5:00 CO -05/-04 |
| # Malpelo, Providencia, San Andres |
| # no information; probably like America/Bogota |
| |
| @@ -1349,7 +1347,7 @@ |
| # |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad |
| - -4:30 - ANT 1965 # Netherlands Antilles Time |
| + -4:30 - -0430 1965 |
| -4:00 - AST |
| |
| # From Arthur David Olson (2011-06-15): |
| @@ -1364,19 +1362,32 @@ |
| # |
| # Milne says the Central and South American Telegraph Company used -5:24:15. |
| # |
| -# From Paul Eggert (2007-03-04): |
| -# Apparently Ecuador had a failed experiment with DST in 1992. |
| -# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and |
| -# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both |
| -# talk about "hora Sixto". Leave this alone for now, as we have no data. |
| +# From Alois Treindl (2016-12-15): |
| +# https://www.elcomercio.com/actualidad/hora-sixto-1993.html |
| +# ... Whether the law applied also to Galápagos, I do not know. |
| +# From Paul Eggert (2016-12-15): |
| +# https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html |
| +# This says President Sixto Durán Ballén signed decree No. 285, which |
| +# established DST from 1992-11-28 to 1993-02-05; it does not give transition |
| +# times. The people called it "hora de Sixto" ("Sixto hour"). The change did |
| +# not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics |
| +# that included "Amanecía en mitad de la noche, los guaguas iban a clase sin |
| +# sol" ("It was dawning in the middle of the night, the buses went to class |
| +# without sun"). Although Ballén's campaign slogan was "Ni un paso atrás" |
| +# (Not one step back), the clocks went back in 1993 and the experiment was not |
| +# repeated. For now, assume transitions were at 00:00 local time country-wide. |
| # |
| +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
| +Rule Ecuador 1992 only - Nov 28 0:00 1:00 S |
| +Rule Ecuador 1993 only - Feb 5 0:00 0 - |
| +# |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Guayaquil -5:19:20 - LMT 1890 |
| -5:14:00 - QMT 1931 # Quito Mean Time |
| - -5:00 - ECT # Ecuador Time |
| + -5:00 Ecuador -05/-04 |
| Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno |
| - -5:00 - ECT 1986 |
| - -6:00 - GALT # Galápagos Time |
| + -5:00 - -05 1986 |
| + -6:00 Ecuador -06/-05 |
| |
| # Falklands |
| |
| @@ -1476,25 +1487,24 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Atlantic/Stanley -3:51:24 - LMT 1890 |
| -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time |
| - -4:00 Falk FK%sT 1983 May # Falkland Is Time |
| - -3:00 Falk FK%sT 1985 Sep 15 |
| - -4:00 Falk FK%sT 2010 Sep 5 2:00 |
| - -3:00 - FKST |
| + -4:00 Falk -04/-03 1983 May |
| + -3:00 Falk -03/-02 1985 Sep 15 |
| + -4:00 Falk -04/-03 2010 Sep 5 2:00 |
| + -3:00 - -03 |
| |
| # French Guiana |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Cayenne -3:29:20 - LMT 1911 Jul |
| - -4:00 - GFT 1967 Oct # French Guiana Time |
| - -3:00 - GFT |
| + -4:00 - -04 1967 Oct |
| + -3:00 - -03 |
| |
| # Guyana |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown |
| - -3:45 - GBGT 1966 May 26 # Br Guiana Time |
| - -3:45 - GYT 1975 Jul 31 # Guyana Time |
| - -3:00 - GYT 1991 |
| + -3:45 - -0345 1975 Jul 31 |
| + -3:00 - -03 1991 |
| # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. |
| - -4:00 - GYT |
| + -4:00 - -04 |
| |
| # Paraguay |
| # |
| @@ -1586,9 +1596,9 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Asuncion -3:50:40 - LMT 1890 |
| -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time |
| - -4:00 - PYT 1972 Oct # Paraguay Time |
| - -3:00 - PYT 1974 Apr |
| - -4:00 Para PY%sT |
| + -4:00 - -04 1972 Oct |
| + -3:00 - -03 1974 Apr |
| + -4:00 Para -04/-03 |
| |
| # Peru |
| # |
| @@ -1615,12 +1625,12 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Lima -5:08:12 - LMT 1890 |
| -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? |
| - -5:00 Peru PE%sT # Peru Time |
| + -5:00 Peru -05/-04 |
| |
| # South Georgia |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken |
| - -2:00 - GST # South Georgia Time |
| + -2:00 - -02 |
| |
| # South Sandwich Is |
| # uninhabited; scientific personnel have wintered |
| @@ -1630,9 +1640,8 @@ |
| Zone America/Paramaribo -3:40:40 - LMT 1911 |
| -3:40:52 - PMT 1935 # Paramaribo Mean Time |
| -3:40:36 - PMT 1945 Oct # The capital moved? |
| - -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time |
| - -3:30 - SRT 1984 Oct # Suriname Time |
| - -3:00 - SRT |
| + -3:30 - -0330 1984 Oct |
| + -3:00 - -03 |
| |
| # Trinidad and Tobago |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| @@ -1735,11 +1744,16 @@ |
| # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04] |
| Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S |
| Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 - |
| -# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| + |
| +# This Zone can be simplified once we assume zic %z. |
| Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 |
| -3:44:44 - MMT 1920 May 1 # Montevideo MT |
| - -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time |
| - -3:00 Uruguay UY%sT |
| + -3:30 Uruguay -0330/-03 1942 Dec 14 |
| + -3:00 Uruguay -03/-02 1968 |
| + -3:00 Uruguay -03/-0230 1971 |
| + -3:00 Uruguay -03/-02 1974 |
| + -3:00 Uruguay -03/-0230 1974 Dec 22 |
| + -3:00 Uruguay -03/-02 |
| |
| # Venezuela |
| # |
| @@ -1764,7 +1778,7 @@ |
| # hours of presidential broadcasts, hours of lines,' quipped comedian |
| # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps |
| # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 |
| -# http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE |
| +# https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE |
| # |
| # From Matt Johnson (2016-04-20): |
| # ... published in the official Gazette [2016-04-18], here: |
| @@ -1773,7 +1787,7 @@ |
| # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
| Zone America/Caracas -4:27:44 - LMT 1890 |
| -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? |
| - -4:30 - VET 1965 Jan 1 0:00 # Venezuela T. |
| - -4:00 - VET 2007 Dec 9 3:00 |
| - -4:30 - VET 2016 May 1 2:30 |
| - -4:00 - VET |
| + -4:30 - -0430 1965 Jan 1 0:00 |
| + -4:00 - -04 2007 Dec 9 3:00 |
| + -4:30 - -0430 2016 May 1 2:30 |
| + -4:00 - -04 |
| Index: contrib/tzdata/theory.html |
| =================================================================== |
| --- contrib/tzdata/theory.html (不存在的) |
| +++ contrib/tzdata/theory.html (版本 325322) |
| @@ -0,0 +1,1034 @@ |
| +<!DOCTYPE html> |
| +<html lang="en"> |
| +<head> |
| + <title>Theory and pragmatics of the tz code and data</title> |
| + <meta charset="UTF-8"> |
| +</head> |
| + |
| +<!-- The somewhat-unusal indenting style in this file is intended to |
| + shrink the output of the shell command 'diff Theory Theory.html', |
| + where 'Theory' was the plain text file that this file is derived |
| + from. The 'Theory' file used leading white space to indent, and |
| + when possible that indentation is preserved here. Eventually we |
| + may stop doing this and remove this comment. --> |
| + |
| +<body> |
| + <h1>Theory and pragmatics of the tz code and data</h1> |
| + <h3>Outline</h3> |
| + <nav> |
| + <ul> |
| + <li><a href="#scope">Scope of the tz database</a></li> |
| + <li><a href="#naming">Names of time zone rules</a></li> |
| + <li><a href="#abbreviations">Time zone abbreviations</a></li> |
| + <li><a href="#accuracy">Accuracy of the tz database</a></li> |
| + <li><a href="#functions">Time and date functions</a></li> |
| + <li><a href="#stability">Interface stability</a></li> |
| + <li><a href="#calendar">Calendrical issues</a></li> |
| + <li><a href="#planets">Time and time zones on other planets</a></li> |
| + </ul> |
| + </nav> |
| + |
| + |
| + <section> |
| + <h2 id="scope">Scope of the tz database</h2> |
| +<p> |
| +The tz database attempts to record the history and predicted future of |
| +all computer-based clocks that track civil time. To represent this |
| +data, the world is partitioned into regions whose clocks all agree |
| +about timestamps that occur after the somewhat-arbitrary cutoff point |
| +of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region, |
| +the database records all known clock transitions, and labels the region |
| +with a notable location. Although 1970 is a somewhat-arbitrary |
| +cutoff, there are significant challenges to moving the cutoff earlier |
| +even by a decade or two, due to the wide variety of local practices |
| +before computer timekeeping became prevalent. |
| +</p> |
| + |
| +<p> |
| +Clock transitions before 1970 are recorded for each such location, |
| +because most systems support timestamps before 1970 and could |
| +misbehave if data entries were omitted for pre-1970 transitions. |
| +However, the database is not designed for and does not suffice for |
| +applications requiring accurate handling of all past times everywhere, |
| +as it would take far too much effort and guesswork to record all |
| +details of pre-1970 civil timekeeping. |
| +</p> |
| + |
| +<p> |
| +As described below, reference source code for using the tz database is |
| +also available. The tz code is upwards compatible with POSIX, an |
| +international standard for UNIX-like systems. As of this writing, the |
| +current edition of POSIX is: |
| + <a href="http://pubs.opengroup.org/onlinepubs/9699919799/"> |
| + The Open Group Base Specifications Issue 7</a>, |
| + IEEE Std 1003.1-2008, 2016 Edition. |
| +</p> |
| + </section> |
| + |
| + |
| + |
| + <section> |
| + <h2 id="naming">Names of time zone rules</h2> |
| +<p> |
| +Each of the database's time zone rules has a unique name. |
| +Inexperienced users are not expected to select these names unaided. |
| +Distributors should provide documentation and/or a simple selection |
| +interface that explains the names; for one example, see the 'tzselect' |
| +program in the tz code. The |
| +<a href="http://cldr.unicode.org/">Unicode Common Locale Data |
| +Repository</a> contains data that may be useful for other |
| +selection interfaces. |
| +</p> |
| + |
| +<p> |
| +The time zone rule naming conventions attempt to strike a balance |
| +among the following goals: |
| +</p> |
| +<ul> |
| + <li> |
| + Uniquely identify every region where clocks have agreed since 1970. |
| + This is essential for the intended use: static clocks keeping local |
| + civil time. |
| + </li> |
| + <li> |
| + Indicate to experts where that region is. |
| + </li> |
| + <li> |
| + Be robust in the presence of political changes. For example, names |
| + of countries are ordinarily not used, to avoid incompatibilities |
| + when countries change their name (e.g. Zaire→Congo) or when |
| + locations change countries (e.g. Hong Kong from UK colony to |
| + China). |
| + </li> |
| + <li> |
| + Be portable to a wide variety of implementations. |
| + </li> |
| + <li> |
| + Use a consistent naming conventions over the entire world. |
| + </li> |
| +</ul> |
| +<p> |
| +Names normally have the |
| +form <var>AREA</var><code>/</code><var>LOCATION</var>, |
| +where <var>AREA</var> is the name of a continent or ocean, |
| +and <var>LOCATION</var> is the name of a specific |
| +location within that region. North and South America share the same |
| +area, '<code>America</code>'. Typical names are |
| +'<code>Africa/Cairo</code>', '<code>America/New_York</code>', and |
| +'<code>Pacific/Honolulu</code>'. |
| +</p> |
| + |
| +<p> |
| +Here are the general rules used for choosing location names, |
| +in decreasing order of importance: |
| +</p> |
| +<ul> |
| + <li> |
| + Use only valid POSIX file name components (i.e., the parts of |
| + names other than '<code>/</code>'). Do not use the file name |
| + components '<code>.</code>' and '<code>..</code>'. |
| + Within a file name component, |
| + use only ASCII letters, '<code>.</code>', |
| + '<code>-</code>' and '<code>_</code>'. Do not use |
| + digits, as that might create an ambiguity with POSIX |
| + TZ strings. A file name component must not exceed 14 |
| + characters or start with '<code>-</code>'. E.g., |
| + prefer '<code>Brunei</code>' to |
| + '<code>Bandar_Seri_Begawan</code>'. Exceptions: see |
| + the discussion |
| + of legacy names below. |
| + </li> |
| + <li> |
| + A name must not be empty, or contain '<code>//</code>', or |
| + start or end with '<code>/</code>'. |
| + </li> |
| + <li> |
| + Do not use names that differ only in case. Although the reference |
| + implementation is case-sensitive, some other implementations |
| + are not, and they would mishandle names differing only in case. |
| + </li> |
| + <li> |
| + If one name <var>A</var> is an initial prefix of another |
| + name <var>AB</var> (ignoring case), then <var>B</var> |
| + must not start with '<code>/</code>', as a |
| + regular file cannot have |
| + the same name as a directory in POSIX. For example, |
| + '<code>America/New_York</code>' precludes |
| + '<code>America/New_York/Bronx</code>'. |
| + </li> |
| + <li> |
| + Uninhabited regions like the North Pole and Bouvet Island |
| + do not need locations, since local time is not defined there. |
| + </li> |
| + <li> |
| + There should typically be at least one name for each ISO 3166-1 |
| + officially assigned two-letter code for an inhabited country |
| + or territory. |
| + </li> |
| + <li> |
| + If all the clocks in a region have agreed since 1970, |
| + don't bother to include more than one location |
| + even if subregions' clocks disagreed before 1970. |
| + Otherwise these tables would become annoyingly large. |
| + </li> |
| + <li> |
| + If a name is ambiguous, use a less ambiguous alternative; |
| + e.g. many cities are named San José and Georgetown, so |
| + prefer '<code>Costa_Rica</code>' to '<code>San_Jose</code>' and '<code>Guyana</code>' to '<code>Georgetown</code>'. |
| + </li> |
| + <li> |
| + Keep locations compact. Use cities or small islands, not countries |
| + or regions, so that any future time zone changes do not split |
| + locations into different time zones. E.g. prefer |
| + '<code>Paris</code>' to '<code>France</code>', since |
| + France has had multiple time zones. |
| + </li> |
| + <li> |
| + Use mainstream English spelling, e.g. prefer |
| + '<code>Rome</code>' to '<code>Roma</code>', and prefer |
| + '<code>Athens</code>' to the Greek |
| + '<code>Αθήνα</code>' or the Romanized |
| + '<code>Athína</code>'. |
| + The POSIX file name restrictions encourage this rule. |
| + </li> |
| + <li> |
| + Use the most populous among locations in a zone, |
| + e.g. prefer '<code>Shanghai</code>' to |
| + '<code>Beijing</code>'. Among locations with |
| + similar populations, pick the best-known location, |
| + e.g. prefer '<code>Rome</code>' to '<code>Milan</code>'. |
| + </li> |
| + <li> |
| + Use the singular form, e.g. prefer '<code>Canary</code>' to '<code>Canaries</code>'. |
| + </li> |
| + <li> |
| + Omit common suffixes like '<code>_Islands</code>' and |
| + '<code>_City</code>', unless that would lead to |
| + ambiguity. E.g. prefer '<code>Cayman</code>' to |
| + '<code>Cayman_Islands</code>' and |
| + '<code>Guatemala</code>' to |
| + '<code>Guatemala_City</code>', but prefer |
| + '<code>Mexico_City</code>' to '<code>Mexico</code>' |
| + because the country |
| + of Mexico has several time zones. |
| + </li> |
| + <li> |
| + Use '<code>_</code>' to represent a space. |
| + </li> |
| + <li> |
| + Omit '<code>.</code>' from abbreviations in names, e.g. prefer |
| + '<code>St_Helena</code>' to '<code>St._Helena</code>'. |
| + </li> |
| + <li> |
| + Do not change established names if they only marginally |
| + violate the above rules. For example, don't change |
| + the existing name '<code>Rome</code>' to |
| + '<code>Milan</code>' merely because |
| + Milan's population has grown to be somewhat greater |
| + than Rome's. |
| + </li> |
| + <li> |
| + If a name is changed, put its old spelling in the |
| + '<code>backward</code>' file. |
| + This means old spellings will continue to work. |
| + </li> |
| +</ul> |
| + |
| +<p> |
| +The file '<code>zone1970.tab</code>' lists geographical locations used |
| +to name time |
| +zone rules. It is intended to be an exhaustive list of names for |
| +geographic regions as described above; this is a subset of the names |
| +in the data. Although a '<code>zone1970.tab</code>' location's longitude |
| +corresponds to its LMT offset with one hour for every 15 degrees east |
| +longitude, this relationship is not exact. |
| +</p> |
| + |
| +<p> |
| +Older versions of this package used a different naming scheme, |
| +and these older names are still supported. |
| +See the file '<code>backward</code>' for most of these older names |
| +(e.g., '<code>US/Eastern</code>' instead of '<code>America/New_York</code>'). |
| +The other old-fashioned names still supported are |
| +'<code>WET</code>', '<code>CET</code>', '<code>MET</code>', and '<code>EET</code>' (see the file '<code>europe</code>'). |
| +</p> |
| + |
| +<p> |
| +Older versions of this package defined legacy names that are |
| +incompatible with the first rule of location names, but which are |
| +still supported. These legacy names are mostly defined in the file |
| +'<code>etcetera</code>'. Also, the file '<code>backward</code>' defines the legacy names |
| +'<code>GMT0</code>', '<code>GMT-0</code>' and '<code>GMT+0</code>', and the file '<code>northamerica</code>' defines the |
| +legacy names '<code>EST5EDT</code>', '<code>CST6CDT</code>', '<code>MST7MDT</code>', and '<code>PST8PDT</code>'. |
| +</p> |
| + |
| +<p> |
| +Excluding '<code>backward</code>' should not affect the other data. If |
| +'<code>backward</code>' is excluded, excluding '<code>etcetera</code>' should not affect the |
| +remaining data. |
| +</p> |
| + |
| + |
| + </section> |
| + <section> |
| + <h2 id="abbreviations">Time zone abbreviations</h2> |
| +<p> |
| +When this package is installed, it generates time zone abbreviations |
| +like '<code>EST</code>' to be compatible with human tradition and POSIX. |
| +Here are the general rules used for choosing time zone abbreviations, |
| +in decreasing order of importance: |
| +<ul> |
| + <li> |
| + Use three or more characters that are ASCII alphanumerics or |
| + '<code>+</code>' or '<code>-</code>'. |
| + Previous editions of this database also used characters like |
| + '<code> </code>' and '<code>?</code>', but these |
| + characters have a special meaning to |
| + the shell and cause commands like |
| + '<code>set `date`</code>' |
| + to have unexpected effects. |
| + Previous editions of this rule required upper-case letters, |
| + but the Congressman who introduced Chamorro Standard Time |
| + preferred "ChST", so lower-case letters are now allowed. |
| + Also, POSIX from 2001 on relaxed the rule to allow |
| + '<code>-</code>', '<code>+</code>', |
| + and alphanumeric characters from the portable character set |
| + in the current locale. In practice ASCII alphanumerics and |
| + '<code>+</code>' and '<code>-</code>' are safe in all locales. |
| + |
| + In other words, in the C locale the POSIX extended regular |
| + expression <code>[-+[:alnum:]]{3,}</code> should match |
| + the abbreviation. |
| + This guarantees that all abbreviations could have been |
| + specified by a POSIX TZ string. |
| + </li> |
| + <li> |
| + Use abbreviations that are in common use among English-speakers, |
| + e.g. 'EST' for Eastern Standard Time in North America. |
| + We assume that applications translate them to other languages |
| + as part of the normal localization process; for example, |
| + a French application might translate 'EST' to 'HNE'. |
| + </li> |
| + <li> |
| + For zones whose times are taken from a city's longitude, use the |
| + traditional <var>x</var>MT notation, e.g. 'PMT' for |
| + Paris Mean Time. |
| + The only name like this in current use is 'GMT'. |
| + </li> |
| + <li> |
| + Use 'LMT' for local mean time of locations before the introduction |
| + of standard time; see "<a href="#scope">Scope of the |
| + tz database</a>". |
| + </li> |
| + <li> |
| + If there is no common English abbreviation, use numeric offsets like |
| + <code>-</code>05 and <code>+</code>0830 that are |
| + generated by zic's <code>%z</code> notation. |
| + </li> |
| + <li> |
| + Use current abbreviations for older timestamps to avoid confusion. |
| + For example, in 1910 a common English abbreviation for UT +01 |
| + in central Europe was 'MEZ' (short for both "Middle European |
| + Zone" and for "Mitteleuropäische Zeit" in German). Nowadays |
| + 'CET' ("Central European Time") is more common in English, and |
| + the database uses 'CET' even for circa-1910 timestamps as this |
| + is less confusing for modern users and avoids the need for |
| + determining when 'CET' supplanted 'MEZ' in common usage. |
| + </li> |
| + <li> |
| + Use a consistent style in a zone's history. For example, if a zone's |
| + history tends to use numeric abbreviations and a particular |
| + entry could go either way, use a numeric abbreviation. |
| + </li> |
| +</ul> |
| + [The remaining guidelines predate the introduction of <code>%z</code>. |
| + They are problematic as they mean tz data entries invent |
| + notation rather than record it. These guidelines are now |
| + deprecated and the plan is to gradually move to <code>%z</code> for |
| + inhabited locations and to "<code>-</code>00" for uninhabited locations.] |
| +<ul> |
| + <li> |
| + If there is no common English abbreviation, abbreviate the English |
| + translation of the usual phrase used by native speakers. |
| + If this is not available or is a phrase mentioning the country |
| + (e.g. "Cape Verde Time"), then: |
| + <ul> |
| + <li> |
| + When a country is identified with a single or principal zone, |
| + append 'T' to the country's ISO code, e.g. 'CVT' for |
| + Cape Verde Time. For summer time append 'ST'; |
| + for double summer time append 'DST'; etc. |
| + </li> |
| + <li> |
| + Otherwise, take the first three letters of an English place |
| + name identifying each zone and append 'T', 'ST', etc. |
| + as before; e.g. 'CHAST' for CHAtham Summer Time. |
| + </li> |
| + </ul> |
| + </li> |
| + <li> |
| + Use UT (with time zone abbreviation '<code>-</code>00') for |
| + locations while uninhabited. The leading |
| + '<code>-</code>' is a flag that the time |
| + zone is in some sense undefined; this notation is |
| + derived from Internet RFC 3339. |
| + </li> |
| +</ul> |
| +<p> |
| +Application writers should note that these abbreviations are ambiguous |
| +in practice: e.g. 'CST' has a different meaning in China than |
| +it does in the United States. In new applications, it's often better |
| +to use numeric UT offsets like '<code>-</code>0600' instead of time zone |
| +abbreviations like 'CST'; this avoids the ambiguity. |
| +</p> |
| + </section> |
| + |
| + |
| + <section> |
| + <h2 id="accuracy">Accuracy of the tz database</h2> |
| +<p> |
| +The tz database is not authoritative, and it surely has errors. |
| +Corrections are welcome and encouraged; see the file CONTRIBUTING. |
| +Users requiring authoritative data should consult national standards |
| +bodies and the references cited in the database's comments. |
| +</p> |
| + |
| +<p> |
| +Errors in the tz database arise from many sources: |
| +</p> |
| +<ul> |
| + <li> |
| + The tz database predicts future timestamps, and current predictions |
| + will be incorrect after future governments change the rules. |
| + For example, if today someone schedules a meeting for 13:00 next |
| + October 1, Casablanca time, and tomorrow Morocco changes its |
| + daylight saving rules, software can mess up after the rule change |
| + if it blithely relies on conversions made before the change. |
| + </li> |
| + <li> |
| + The pre-1970 entries in this database cover only a tiny sliver of how |
| + clocks actually behaved; the vast majority of the necessary |
| + information was lost or never recorded. Thousands more zones would |
| + be needed if the tz database's scope were extended to cover even |
| + just the known or guessed history of standard time; for example, |
| + the current single entry for France would need to split into dozens |
| + of entries, perhaps hundreds. And in most of the world even this |
| + approach would be misleading due to widespread disagreement or |
| + indifference about what times should be observed. In her 2015 book |
| + <cite>The Global Transformation of Time, 1870-1950</cite>, Vanessa Ogle writes |
| + "Outside of Europe and North America there was no system of time |
| + zones at all, often not even a stable landscape of mean times, |
| + prior to the middle decades of the twentieth century". See: |
| + Timothy Shenk, <a |
| + href="https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanessa-ogle">Booked: |
| + A Global History of Time</a>. <cite>Dissent</cite> 2015-12-17. |
| + </li> |
| + <li> |
| + Most of the pre-1970 data entries come from unreliable sources, often |
| + astrology books that lack citations and whose compilers evidently |
| + invented entries when the true facts were unknown, without |
| + reporting which entries were known and which were invented. |
| + These books often contradict each other or give implausible entries, |
| + and on the rare occasions when they are checked they are |
| + typically found to be incorrect. |
| + </li> |
| + <li> |
| + For the UK the tz database relies on years of first-class work done by |
| + Joseph Myers and others; see |
| + "<a href="https://www.polyomino.org.uk/british-time/">History of |
| + legal time in Britain</a>". |
| + Other countries are not done nearly as well. |
| + </li> |
| + <li> |
| + Sometimes, different people in the same city would maintain clocks |
| + that differed significantly. Railway time was used by railroad |
| + companies (which did not always agree with each other), |
| + church-clock time was used for birth certificates, etc. |
| + Often this was merely common practice, but sometimes it was set by law. |
| + For example, from 1891 to 1911 the UT offset in France was legally |
| + 0:09:21 outside train stations and 0:04:21 inside. |
| + </li> |
| + <li> |
| + Although a named location in the tz database stands for the |
| + containing region, its pre-1970 data entries are often accurate for |
| + only a small subset of that region. For example, <code>Europe/London</code> |
| + stands for the United Kingdom, but its pre-1847 times are valid |
| + only for locations that have London's exact meridian, and its 1847 |
| + transition to GMT is known to be valid only for the L&NW and the |
| + Caledonian railways. |
| + </li> |
| + <li> |
| + The tz database does not record the earliest time for which a zone's |
| + data entries are thereafter valid for every location in the region. |
| + For example, <code>Europe/London</code> is valid for all locations in its |
| + region after GMT was made the standard time, but the date of |
| + standardization (1880-08-02) is not in the tz database, other than |
| + in commentary. For many zones the earliest time of validity is |
| + unknown. |
| + </li> |
| + <li> |
| + The tz database does not record a region's boundaries, and in many |
| + cases the boundaries are not known. For example, the zone |
| + <code>America/Kentucky/Louisville</code> represents a region around |
| + the city of |
| + Louisville, the boundaries of which are unclear. |
| + </li> |
| + <li> |
| + Changes that are modeled as instantaneous transitions in the tz |
| + database were often spread out over hours, days, or even decades. |
| + </li> |
| + <li> |
| + Even if the time is specified by law, locations sometimes |
| + deliberately flout the law. |
| + </li> |
| + <li> |
| + Early timekeeping practices, even assuming perfect clocks, were |
| + often not specified to the accuracy that the tz database requires. |
| + </li> |
| + <li> |
| + Sometimes historical timekeeping was specified more precisely |
| + than what the tz database can handle. For example, from 1909 to |
| + 1937 Netherlands clocks were legally UT +00:19:32.13, but the tz |
| + database cannot represent the fractional second. |
| + </li> |
| + <li> |
| + Even when all the timestamp transitions recorded by the tz database |
| + are correct, the tz rules that generate them may not faithfully |
| + reflect the historical rules. For example, from 1922 until World |
| + War II the UK moved clocks forward the day following the third |
| + Saturday in April unless that was Easter, in which case it moved |
| + clocks forward the previous Sunday. Because the tz database has no |
| + way to specify Easter, these exceptional years are entered as |
| + separate tz Rule lines, even though the legal rules did not change. |
| + </li> |
| + <li> |
| + The tz database models pre-standard time using the proleptic Gregorian |
| + calendar and local mean time (LMT), but many people used other |
| + calendars and other timescales. For example, the Roman Empire used |
| + the Julian calendar, and had 12 varying-length daytime hours with a |
| + non-hour-based system at night. |
| + </li> |
| + <li> |
| + Early clocks were less reliable, and data entries do not represent |
| + clock error. |
| + </li> |
| + <li> |
| + The tz database assumes Universal Time (UT) as an origin, even |
| + though UT is not standardized for older timestamps. In the tz |
| + database commentary, UT denotes a family of time standards that |
| + includes Coordinated Universal Time (UTC) along with other variants |
| + such as UT1 and GMT, with days starting at midnight. Although UT |
| + equals UTC for modern timestamps, UTC was not defined until 1960, |
| + so commentary uses the more-general abbreviation UT for timestamps |
| + that might predate 1960. Since UT, UT1, etc. disagree slightly, |
| + and since pre-1972 UTC seconds varied in length, interpretation of |
| + older timestamps can be problematic when subsecond accuracy is |
| + needed. |
| + </li> |
| + <li> |
| + Civil time was not based on atomic time before 1972, and we don't |
| + know the history of earth's rotation accurately enough to map SI |
| + seconds to historical solar time to more than about one-hour |
| + accuracy. See: Stephenson FR, Morrison LV, Hohenkerk CY. |
| + <a href="http://dx.doi.org/10.1098/rspa.2016.0404">Measurement |
| + of the Earth's rotation: 720 BC to AD 2015</a>. |
| + <cite>Proc Royal Soc A</cite>. 2016 Dec 7;472:20160404. |
| + Also see: Espenak F. <a |
| + href="https://eclipse.gsfc.nasa.gov/SEhelp/uncertainty2004.html">Uncertainty |
| + in Delta T (ΔT)</a>. |
| + </li> |
| + <li> |
| + The relationship between POSIX time (that is, UTC but ignoring leap |
| + seconds) and UTC is not agreed upon after 1972. Although the POSIX |
| + clock officially stops during an inserted leap second, at least one |
| + proposed standard has it jumping back a second instead; and in |
| + practice POSIX clocks more typically either progress glacially during |
| + a leap second, or are slightly slowed while near a leap second. |
| + </li> |
| + <li> |
| + The tz database does not represent how uncertain its information is. |
| + Ideally it would contain information about when data entries are |
| + incomplete or dicey. Partial temporal knowledge is a field of |
| + active research, though, and it's not clear how to apply it here. |
| + </li> |
| +</ul> |
| +<p> |
| +In short, many, perhaps most, of the tz database's pre-1970 and future |
| +timestamps are either wrong or misleading. Any attempt to pass the |
| +tz database off as the definition of time should be unacceptable to |
| +anybody who cares about the facts. In particular, the tz database's |
| +LMT offsets should not be considered meaningful, and should not prompt |
| +creation of zones merely because two locations differ in LMT or |
| +transitioned to standard time at different dates. |
| +</p> |
| + </section> |
| + |
| + |
| + <section> |
| + <h2 id="functions">Time and date functions</h2> |
| +<p> |
| +The tz code contains time and date functions that are upwards |
| +compatible with those of POSIX. |
| +</p> |
| + |
| +<p> |
| +POSIX has the following properties and limitations. |
| +</p> |
| +<ul> |
| + <li> |
| + <p> |
| + In POSIX, time display in a process is controlled by the |
| + environment variable TZ. Unfortunately, the POSIX TZ string takes |
| + a form that is hard to describe and is error-prone in practice. |
| + Also, POSIX TZ strings can't deal with other (for example, Israeli) |
| + daylight saving time rules, or situations where more than two |
| + time zone abbreviations are used in an area. |
| + </p> |
| + <p> |
| + The POSIX TZ string takes the following form: |
| + </p> |
| + <p> |
| + <var>stdoffset</var>[<var>dst</var>[<var>offset</var>][<code>,</code><var>date</var>[<code>/</code><var>time</var>]<code>,</code><var>date</var>[<code>/</code><var>time</var>]]] |
| + </p> |
| + <p> |
| + where: |
| + <dl> |
| + <dt><var>std</var> and <var>dst</var></dt><dd> |
| + are 3 or more characters specifying the standard |
| + and daylight saving time (DST) zone names. |
| + Starting with POSIX.1-2001, <var>std</var> |
| + and <var>dst</var> may also be |
| + in a quoted form like '<code><UTC+10></code>'; this allows |
| + "<code>+</code>" and "<code>-</code>" in the names. |
| + </dd> |
| + <dt><var>offset</var></dt><dd> |
| + is of the form |
| + '<code>[±]<var>hh</var>:[<var>mm</var>[:<var>ss</var>]]</code>' |
| + and specifies the offset west of UT. '<var>hh</var>' |
| + may be a single digit; 0≤<var>hh</var>≤24. |
| + The default DST offset is one hour ahead of standard time. |
| + </dd> |
| + <dt><var>date</var>[<code>/</code><var>time</var>]<code>,</code><var>date</var>[<code>/</code><var>time</var>]</dt><dd> |
| + specifies the beginning and end of DST. If this is absent, |
| + the system supplies its own rules for DST, and these can |
| + differ from year to year; typically US DST rules are used. |
| + </dd> |
| + <dt><var>time</var></dt><dd> |
| + takes the form |
| + '<var>hh</var><code>:</code>[<var>mm</var>[<code>:</code><var>ss</var>]]' |
| + and defaults to 02:00. |
| + This is the same format as the offset, except that a |
| + leading '<code>+</code>' or '<code>-</code>' is not allowed. |
| + </dd> |
| + <dt><var>date</var></dt><dd> |
| + takes one of the following forms: |
| + <dl> |
| + <dt>J<var>n</var> (1≤<var>n</var>≤365)</dt><dd> |
| + origin-1 day number not counting February 29 |
| + </dd> |
| + <dt><var>n</var> (0≤<var>n</var>≤365)</dt><dd> |
| + origin-0 day number counting February 29 if present |
| + </dd> |
| + <dt><code>M</code><var>m</var><code>.</code><var>n</var><code>.</code><var>d</var> (0[Sunday]≤<var>d</var>≤6[Saturday], 1≤<var>n</var>≤5, 1≤<var>m</var>≤12)</dt><dd> |
| + for the <var>d</var>th day of |
| + week <var>n</var> of month <var>m</var> of the |
| + year, where week 1 is the first week in which |
| + day <var>d</var> appears, and '<code>5</code>' |
| + stands for the last week in which |
| + day <var>d</var> appears |
| + (which may be either the 4th or 5th week). |
| + Typically, this is the only useful form; |
| + the <var>n</var> |
| + and <code>J</code><var>n</var> forms are |
| + rarely used. |
| + </dd> |
| +</dl> |
| +</dd> |
| +</dl> |
| + Here is an example POSIX TZ string for New Zealand after 2007. |
| + It says that standard time (NZST) is 12 hours ahead of UTC, |
| + and that daylight saving time (NZDT) is observed from September's |
| + last Sunday at 02:00 until April's first Sunday at 03:00: |
| + |
| + <pre><code>TZ='NZST-12NZDT,M9.5.0,M4.1.0/3'</code></pre> |
| + |
| + This POSIX TZ string is hard to remember, and mishandles some |
| + timestamps before 2008. With this package you can use this |
| + instead: |
| + |
| + <pre><code>TZ='Pacific/Auckland'</code></pre> |
| + </li> |
| + <li> |
| + POSIX does not define the exact meaning of TZ values like |
| + "<code>EST5EDT</code>". |
| + Typically the current US DST rules are used to interpret such values, |
| + but this means that the US DST rules are compiled into each program |
| + that does time conversion. This means that when US time conversion |
| + rules change (as in the United States in 1987), all programs that |
| + do time conversion must be recompiled to ensure proper results. |
| + </li> |
| + <li> |
| + The TZ environment variable is process-global, which makes it hard |
| + to write efficient, thread-safe applications that need access |
| + to multiple time zones. |
| + </li> |
| + <li> |
| + In POSIX, there's no tamper-proof way for a process to learn the |
| + system's best idea of local wall clock. (This is important for |
| + applications that an administrator wants used only at certain |
| + times – |
| + without regard to whether the user has fiddled the TZ environment |
| + variable. While an administrator can "do everything in UTC" to get |
| + around the problem, doing so is inconvenient and precludes handling |
| + daylight saving time shifts - as might be required to limit phone |
| + calls to off-peak hours.) |
| + </li> |
| + <li> |
| + POSIX provides no convenient and efficient way to determine the UT |
| + offset and time zone abbreviation of arbitrary timestamps, |
| + particularly for time zone settings that do not fit into the |
| + POSIX model. |
| + </li> |
| + <li> |
| + POSIX requires that systems ignore leap seconds. |
| + </li> |
| + <li> |
| + The tz code attempts to support all the <code>time_t</code> |
| + implementations allowed by POSIX. The <code>time_t</code> |
| + type represents a nonnegative count of |
| + seconds since 1970-01-01 00:00:00 UTC, ignoring leap seconds. |
| + In practice, <code>time_t</code> is usually a signed 64- or |
| + 32-bit integer; 32-bit signed <code>time_t</code> values stop |
| + working after 2038-01-19 03:14:07 UTC, so |
| + new implementations these days typically use a signed 64-bit integer. |
| + Unsigned 32-bit integers are used on one or two platforms, |
| + and 36-bit and 40-bit integers are also used occasionally. |
| + Although earlier POSIX versions allowed <code>time_t</code> to be a |
| + floating-point type, this was not supported by any practical |
| + systems, and POSIX.1-2013 and the tz code both |
| + require <code>time_t</code> |
| + to be an integer type. |
| + </li> |
| +</ul> |
| +<p> |
| +These are the extensions that have been made to the POSIX functions: |
| +</p> |
| +<ul> |
| + <li> |
| + <p> |
| + The TZ environment variable is used in generating the name of a file |
| + from which time zone information is read (or is interpreted a la |
| + POSIX); TZ is no longer constrained to be a three-letter time zone |
| + name followed by a number of hours and an optional three-letter |
| + daylight time zone name. The daylight saving time rules to be used |
| + for a particular time zone are encoded in the time zone file; |
| + the format of the file allows U.S., Australian, and other rules to be |
| + encoded, and allows for situations where more than two time zone |
| + abbreviations are used. |
| + </p> |
| + <p> |
| + It was recognized that allowing the TZ environment variable to |
| + take on values such as '<code>America/New_York</code>' might |
| + cause "old" programs |
| + (that expect TZ to have a certain form) to operate incorrectly; |
| + consideration was given to using some other environment variable |
| + (for example, TIMEZONE) to hold the string used to generate the |
| + time zone information file name. In the end, however, it was decided |
| + to continue using TZ: it is widely used for time zone purposes; |
| + separately maintaining both TZ and TIMEZONE seemed a nuisance; |
| + and systems where "new" forms of TZ might cause problems can simply |
| + use TZ values such as "<code>EST5EDT</code>" which can be used both by |
| + "new" programs (a la POSIX) and "old" programs (as zone names and |
| + offsets). |
| + </p> |
| +</li> |
| +<li> |
| + The code supports platforms with a UT offset member |
| + in <code>struct tm</code>, |
| + e.g., <code>tm_gmtoff</code>. |
| +</li> |
| +<li> |
| + The code supports platforms with a time zone abbreviation member in |
| + <code>struct tm</code>, e.g., <code>tm_zone</code>. |
| +</li> |
| +<li> |
| + Since the TZ environment variable can now be used to control time |
| + conversion, the <code>daylight</code> |
| + and <code>timezone</code> variables are no longer needed. |
| + (These variables are defined and set by <code>tzset</code>; |
| + however, their values will not be used |
| + by <code>localtime</code>.) |
| +</li> |
| +<li> |
| + Functions <code>tzalloc</code>, <code>tzfree</code>, |
| + <code>localtime_rz</code>, and <code>mktime_z</code> for |
| + more-efficient thread-safe applications that need to use |
| + multiple time zones. The <code>tzalloc</code> |
| + and <code>tzfree</code> functions allocate and free objects of |
| + type <code>timezone_t</code>, and <code>localtime_rz</code> |
| + and <code>mktime_z</code> are like <code>localtime_r</code> |
| + and <code>mktime</code> with an extra |
| + <code>timezone_t</code> argument. The functions were inspired |
| + by NetBSD. |
| +</li> |
| +<li> |
| + A function <code>tzsetwall</code> has been added to arrange |
| + for the system's |
| + best approximation to local wall clock time to be delivered by |
| + subsequent calls to <code>localtime</code>. Source code for portable |
| + applications that "must" run on local wall clock time should call |
| + <code>tzsetwall</code>; if such code is moved to "old" systems that don't |
| + provide tzsetwall, you won't be able to generate an executable program. |
| + (These time zone functions also arrange for local wall clock time to be |
| + used if tzset is called – directly or indirectly – |
| + and there's no TZ |
| + environment variable; portable applications should not, however, rely |
| + on this behavior since it's not the way SVR2 systems behave.) |
| +</li> |
| +<li> |
| + Negative <code>time_t</code> values are supported, on systems |
| + where <code>time_t</code> is signed. |
| +</li> |
| +<li> |
| + These functions can account for leap seconds, thanks to Bradley White. |
| +</li> |
| +</ul> |
| +<p> |
| +Points of interest to folks with other systems: |
| +</p> |
| +<ul> |
| + <li> |
| + Code compatible with this package is already part of many platforms, |
| + including GNU/Linux, Android, the BSDs, Chromium OS, Cygwin, AIX, iOS, |
| + BlackBery 10, macOS, Microsoft Windows, OpenVMS, and Solaris. |
| + On such hosts, the primary use of this package |
| + is to update obsolete time zone rule tables. |
| + To do this, you may need to compile the time zone compiler |
| + '<code>zic</code>' supplied with this package instead of using |
| + the system '<code>zic</code>', since the format |
| + of <code>zic</code>'s input is occasionally extended, and a |
| + platform may still be shipping an older <code>zic</code>. |
| + </li> |
| + <li> |
| + The UNIX Version 7 <code>timezone</code> function is not |
| + present in this package; |
| + it's impossible to reliably map timezone's arguments (a "minutes west |
| + of GMT" value and a "daylight saving time in effect" flag) to a |
| + time zone abbreviation, and we refuse to guess. |
| + Programs that in the past used the timezone function may now examine |
| + <code>localtime(&clock)->tm_zone</code> |
| + (if <code>TM_ZONE</code> is defined) or |
| + <code>tzname[localtime(&clock)->tm_isdst]</code> |
| + (if <code>HAVE_TZNAME</code> is defined) |
| + to learn the correct time zone abbreviation to use. |
| + </li> |
| + <li> |
| + The 4.2BSD <code>gettimeofday</code> function is not used in |
| + this package. |
| + This formerly let users obtain the current UTC offset and DST flag, |
| + but this functionality was removed in later versions of BSD. |
| + </li> |
| + <li> |
| + In SVR2, time conversion fails for near-minimum or near-maximum |
| + <code>time_t</code> values when doing conversions for places |
| + that don't use UT. |
| + This package takes care to do these conversions correctly. |
| + A comment in the source code tells how to get compatibly wrong |
| + results. |
| + </li> |
| +</ul> |
| +<p> |
| +The functions that are conditionally compiled |
| +if <code>STD_INSPIRED</code> is defined |
| +should, at this point, be looked on primarily as food for thought. They are |
| +not in any sense "standard compatible" – some are not, in fact, |
| +specified in <em>any</em> standard. They do, however, represent responses of |
| +various authors to |
| +standardization proposals. |
| +</p> |
| + |
| +<p> |
| +Other time conversion proposals, in particular the one developed by folks at |
| +Hewlett Packard, offer a wider selection of functions that provide capabilities |
| +beyond those provided here. The absence of such functions from this package |
| +is not meant to discourage the development, standardization, or use of such |
| +functions. Rather, their absence reflects the decision to make this package |
| +contain valid extensions to POSIX, to ensure its broad acceptability. If |
| +more powerful time conversion functions can be standardized, so much the |
| +better. |
| +</p> |
| + </section> |
| + |
| + |
| + <section> |
| + <h2 id="stability">Interface stability</h2> |
| +<p> |
| +The tz code and data supply the following interfaces: |
| +</p> |
| +<ul> |
| + <li> |
| + A set of zone names as per "<a href="#naming">Names of time zone |
| + rules</a>" above. |
| + </li> |
| + <li> |
| + Library functions described in "<a href="#functions">Time and date |
| + functions</a>" above. |
| + </li> |
| + <li> |
| + The programs <code>tzselect</code>, <code>zdump</code>, |
| + and <code>zic</code>, documented in their man pages. |
| + </li> |
| + <li> |
| + The format of <code>zic</code> input files, documented in |
| + the <code>zic</code> man page. |
| + </li> |
| + <li> |
| + The format of <code>zic</code> output files, documented in |
| + the <code>tzfile</code> man page. |
| + </li> |
| + <li> |
| + The format of zone table files, documented in <code>zone1970.tab</code>. |
| + </li> |
| + <li> |
| + The format of the country code file, documented in <code>iso3166.tab</code>. |
| + </li> |
| + <li> |
| + The version number of the code and data, as the first line of |
| + the text file '<code>version</code>' in each release. |
| + </li> |
| +</ul> |
| +<p> |
| +Interface changes in a release attempt to preserve compatibility with |
| +recent releases. For example, tz data files typically do not rely on |
| +recently-added <code>zic</code> features, so that users can run |
| +older <code>zic</code> versions to process newer data |
| +files. <a href="tz-link.htm">Sources for time zone and daylight |
| +saving time data</a> describes how |
| +releases are tagged and distributed. |
| +</p> |
| + |
| +<p> |
| +Interfaces not listed above are less stable. For example, users |
| +should not rely on particular UT offsets or abbreviations for |
| +timestamps, as data entries are often based on guesswork and these |
| +guesses may be corrected or improved. |
| +</p> |
| + </section> |
| + |
| + |
| + <section> |
| + <h2 id="calendar">Calendrical issues</h2> |
| +<p> |
| +Calendrical issues are a bit out of scope for a time zone database, |
| +but they indicate the sort of problems that we would run into if we |
| +extended the time zone database further into the past. An excellent |
| +resource in this area is Nachum Dershowitz and Edward M. Reingold, |
| +<cite><a href="https://www.cs.tau.ac.il/~nachum/calendar-book/third-edition/">Calendrical |
| +Calculations: Third Edition</a></cite>, Cambridge University Press (2008). |
| +Other information and sources are given in the file '<samp>calendars</samp>' |
| +in the tz distribution. They sometimes disagree. |
| +</p> |
| + </section> |
| + |
| + |
| + <section> |
| + <h2 id="planets">Time and time zones on other planets</h2> |
| +<p> |
| +Some people's work schedules use Mars time. Jet Propulsion Laboratory |
| +(JPL) coordinators have kept Mars time on and off at least since 1997 |
| +for the Mars Pathfinder mission. Some of their family members have |
| +also adapted to Mars time. Dozens of special Mars watches were built |
| +for JPL workers who kept Mars time during the Mars Exploration |
| +Rovers mission (2004). These timepieces look like normal Seikos and |
| +Citizens but use Mars seconds rather than terrestrial seconds. |
| +</p> |
| + |
| +<p> |
| +A Mars solar day is called a "sol" and has a mean period equal to |
| +about 24 hours 39 minutes 35.244 seconds in terrestrial time. It is |
| +divided into a conventional 24-hour clock, so each Mars second equals |
| +about 1.02749125 terrestrial seconds. |
| +</p> |
| + |
| +<p> |
| +The prime meridian of Mars goes through the center of the crater |
| +Airy-0, named in honor of the British astronomer who built the |
| +Greenwich telescope that defines Earth's prime meridian. Mean solar |
| +time on the Mars prime meridian is called Mars Coordinated Time (MTC). |
| +</p> |
| + |
| +<p> |
| +Each landed mission on Mars has adopted a different reference for |
| +solar time keeping, so there is no real standard for Mars time zones. |
| +For example, the Mars Exploration Rover project (2004) defined two |
| +time zones "Local Solar Time A" and "Local Solar Time B" for its two |
| +missions, each zone designed so that its time equals local true solar |
| +time at approximately the middle of the nominal mission. Such a "time |
| +zone" is not particularly suited for any application other than the |
| +mission itself. |
| +</p> |
| + |
| +<p> |
| +Many calendars have been proposed for Mars, but none have achieved |
| +wide acceptance. Astronomers often use Mars Sol Date (MSD) which is a |
| +sequential count of Mars solar days elapsed since about 1873-12-29 |
| +12:00 GMT. |
| +</p> |
| + |
| +<p> |
| +In our solar system, Mars is the planet with time and calendar most |
| +like Earth's. On other planets, Sun-based time and calendars would |
| +work quite differently. For example, although Mercury's sidereal |
| +rotation period is 58.646 Earth days, Mercury revolves around the Sun |
| +so rapidly that an observer on Mercury's equator would see a sunrise |
| +only every 175.97 Earth days, i.e., a Mercury year is 0.5 of a Mercury |
| +day. Venus is more complicated, partly because its rotation is |
| +slightly retrograde: its year is 1.92 of its days. Gas giants like |
| +Jupiter are trickier still, as their polar and equatorial regions |
| +rotate at different rates, so that the length of a day depends on |
| +latitude. This effect is most pronounced on Neptune, where the day is |
| +about 12 hours at the poles and 18 hours at the equator. |
| +</p> |
| + |
| +<p> |
| +Although the tz database does not support time on other planets, it is |
| +documented here in the hopes that support will be added eventually. |
| +</p> |
| + |
| +<p> |
| +Sources: |
| +</p> |
| +<ul> |
| + <li> |
| +Michael Allison and Robert Schmunk, |
| +"<a href="https://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical |
| +Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a>" |
| +(2012-08-08). |
| + </li> |
| + <li> |
| +Jia-Rui Chong, |
| +"<a href="http://articles.latimes.com/2004/jan/14/science/sci-marstime14">Workdays |
| +Fit for a Martian</a>", Los Angeles Times |
| +(2004-01-14), pp A1, A20-A21. |
| + </li> |
| + <li> |
| +Tom Chmielewski, |
| +"<a href="https://www.theatlantic.com/technology/archive/2015/02/jet-lag-is-worse-on-mars/386033/">Jet |
| +Lag Is Worse on Mars</a>", The Atlantic (2015-02-26) |
| + </li> |
| + <li> |
| +Matt Williams, |
| +"<a href="https://www.universetoday.com/37481/days-of-the-planets/">How |
| +long is a day on the other planets of the solar system?</a>" |
| +(2017-04-27). |
| + </li> |
| +</ul> |
| + </section> |
| + |
| + <footer> |
| + <hr> |
| +This file is in the public domain, so clarified as of 2009-05-17 by |
| +Arthur David Olson. |
| + </footer> |
| +</body> |
| +</html> |
| |
| 属性改变: contrib/tzdata/theory.html |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| ## -0,0 +1 ## |
| +native |
| \ No newline at end of property |
| Added: svn:keywords |
| ## -0,0 +1 ## |
| +FreeBSD=%H |
| \ No newline at end of property |
| Added: svn:mime-type |
| ## -0,0 +1 ## |
| +text/html |
| \ No newline at end of property |
| Index: contrib/tzdata/version |
| =================================================================== |
| --- contrib/tzdata/version (版本 324740) |
| +++ contrib/tzdata/version (版本 325322) |
| @@ -1 +1 @@ |
| -2016i |
| +2017c |
| Index: contrib/tzdata/zishrink.awk |
| =================================================================== |
| --- contrib/tzdata/zishrink.awk (不存在的) |
| +++ contrib/tzdata/zishrink.awk (版本 325322) |
| @@ -0,0 +1,156 @@ |
| +# Convert tzdata source into a smaller version of itself. |
| + |
| +# Contributed by Paul Eggert. This file is in the public domain. |
| + |
| +# This is not a general-purpose converter; it is designed for current tzdata. |
| +# 'zic' should treat this script's output as if it were identical to |
| +# this script's input. |
| + |
| + |
| +# Return a new rule name. |
| +# N_RULE_NAMES keeps track of how many rule names have been generated. |
| + |
| +function gen_rule_name(alphabet, base, rule_name, n, digit) |
| +{ |
| + alphabet = "" |
| + alphabet = alphabet "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| + alphabet = alphabet "abcdefghijklmnopqrstuvwxyz" |
| + alphabet = alphabet "!$%&'()*+,./:;<=>?@[\\]^_`{|}~" |
| + base = length(alphabet) |
| + rule_name = "" |
| + n = n_rule_names++ |
| + |
| + do { |
| + n -= rule_name && n <= base |
| + digit = n % base |
| + rule_name = substr(alphabet, digit + 1, 1) rule_name |
| + n = (n - digit) / base |
| + } while (n); |
| + |
| + return rule_name |
| +} |
| + |
| +# Process an input line and save it for later output. |
| + |
| +function process_input_line(line, field, end, i, n, startdef) |
| +{ |
| + # Remove comments, normalize spaces, and append a space to each line. |
| + sub(/#.*/, "", line) |
| + line = line " " |
| + gsub(/[[:space:]]+/, " ", line) |
| + |
| + # Abbreviate keywords. Do not abbreviate "Link" to just "L", |
| + # as pre-2017c zic erroneously diagnoses "Li" as ambiguous. |
| + sub(/^Link /, "Li ", line) |
| + sub(/^Rule /, "R ", line) |
| + sub(/^Zone /, "Z ", line) |
| + |
| + # SystemV rules are not needed. |
| + if (line ~ /^R SystemV /) return |
| + |
| + # Replace FooAsia rules with the same rules without "Asia", as they |
| + # are duplicates. |
| + if (match(line, /[^ ]Asia /)) { |
| + if (line ~ /^R /) return |
| + line = substr(line, 1, RSTART) substr(line, RSTART + 5) |
| + } |
| + |
| + # Abbreviate times. |
| + while (match(line, /[: ]0+[0-9]/)) |
| + line = substr(line, 1, RSTART) substr(line, RSTART + RLENGTH - 1) |
| + while (match(line, /:0[^:]/)) |
| + line = substr(line, 1, RSTART - 1) substr(line, RSTART + 2) |
| + |
| + # Abbreviate weekday names. Do not abbreviate "Sun" and "Sat", as |
| + # pre-2017c zic erroneously diagnoses "Su" and "Sa" as ambiguous. |
| + while (match(line, / (last)?(Mon|Wed|Fri)[ <>]/)) { |
| + end = RSTART + RLENGTH |
| + line = substr(line, 1, end - 4) substr(line, end - 1) |
| + } |
| + while (match(line, / (last)?(Tue|Thu)[ <>]/)) { |
| + end = RSTART + RLENGTH |
| + line = substr(line, 1, end - 3) substr(line, end - 1) |
| + } |
| + |
| + # Abbreviate "max", "only" and month names. |
| + # Do not abbreviate "min", as pre-2017c zic erroneously diagnoses "mi" |
| + # as ambiguous. |
| + gsub(/ max /, " ma ", line) |
| + gsub(/ only /, " o ", line) |
| + gsub(/ Jan /, " Ja ", line) |
| + gsub(/ Feb /, " F ", line) |
| + gsub(/ Apr /, " Ap ", line) |
| + gsub(/ Aug /, " Au ", line) |
| + gsub(/ Sep /, " S ", line) |
| + gsub(/ Oct /, " O ", line) |
| + gsub(/ Nov /, " N ", line) |
| + gsub(/ Dec /, " D ", line) |
| + |
| + # Strip leading and trailing space. |
| + sub(/^ /, "", line) |
| + sub(/ $/, "", line) |
| + |
| + # Remove unnecessary trailing zero fields. |
| + sub(/ 0+$/, "", line) |
| + |
| + # Remove unnecessary trailing days-of-month "1". |
| + if (match(line, /[[:alpha:]] 1$/)) |
| + line = substr(line, 1, RSTART) |
| + |
| + # Remove unnecessary trailing " Ja" (for January). |
| + sub(/ Ja$/, "", line) |
| + |
| + n = split(line, field) |
| + |
| + # Abbreviate rule names. |
| + i = field[1] == "Z" ? 4 : field[1] == "Li" ? 0 : 2 |
| + if (i && field[i] ~ /^[^-+0-9]/) { |
| + if (!rule[field[i]]) |
| + rule[field[i]] = gen_rule_name() |
| + field[i] = rule[field[i]] |
| + } |
| + |
| + # If this zone supersedes an earlier one, delete the earlier one |
| + # from the saved output lines. |
| + startdef = "" |
| + if (field[1] == "Z") |
| + zonename = startdef = field[2] |
| + else if (field[1] == "Li") |
| + zonename = startdef = field[3] |
| + else if (field[1] == "R") |
| + zonename = "" |
| + if (startdef) { |
| + i = zonedef[startdef] |
| + if (i) { |
| + do |
| + output_line[i - 1] = "" |
| + while (output_line[i++] ~ /^[-+0-9]/); |
| + } |
| + } |
| + zonedef[zonename] = nout + 1 |
| + |
| + # Save the line for later output. |
| + line = field[1] |
| + for (i = 2; i <= n; i++) |
| + line = line " " field[i] |
| + output_line[nout++] = line |
| +} |
| + |
| +function output_saved_lines(i) |
| +{ |
| + for (i = 0; i < nout; i++) |
| + if (output_line[i]) |
| + print output_line[i] |
| +} |
| + |
| +BEGIN { |
| + print "# This zic input file is in the public domain." |
| +} |
| + |
| +/^[[:space:]]*[^#[:space:]]/ { |
| + process_input_line($0) |
| +} |
| + |
| +END { |
| + output_saved_lines() |
| +} |
| |
| 属性改变: contrib/tzdata/zishrink.awk |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| ## -0,0 +1 ## |
| +native |
| \ No newline at end of property |
| Added: svn:keywords |
| ## -0,0 +1 ## |
| +FreeBSD=%H |
| \ No newline at end of property |
| Added: svn:mime-type |
| ## -0,0 +1 ## |
| +text/plain |
| \ No newline at end of property |
| Index: contrib/tzdata/zone.tab |
| =================================================================== |
| --- contrib/tzdata/zone.tab (版本 324740) |
| +++ contrib/tzdata/zone.tab (版本 325322) |
| @@ -142,6 +142,7 @@ |
| CI +0519-00402 Africa/Abidjan |
| CK -2114-15946 Pacific/Rarotonga |
| CL -3327-07040 America/Santiago Chile (most areas) |
| +CL -5309-07055 America/Punta_Arenas Region of Magallanes |
| CL -2709-10926 Pacific/Easter Easter Island |
| CM +0403+00942 Africa/Douala |
| CN +3114+12128 Asia/Shanghai Beijing Time |
| @@ -185,7 +186,7 @@ |
| GD +1203-06145 America/Grenada |
| GE +4143+04449 Asia/Tbilisi |
| GF +0456-05220 America/Cayenne |
| -GG +4927-00232 Europe/Guernsey |
| +GG +492717-0023210 Europe/Guernsey |
| GH +0533-00013 Africa/Accra |
| GI +3608-00521 Europe/Gibraltar |
| GL +6411-05144 America/Godthab Greenland (most areas) |
| @@ -220,7 +221,7 @@ |
| IR +3540+05126 Asia/Tehran |
| IS +6409-02151 Atlantic/Reykjavik |
| IT +4154+01229 Europe/Rome |
| -JE +4912-00207 Europe/Jersey |
| +JE +491101-0020624 Europe/Jersey |
| JM +175805-0764736 America/Jamaica |
| JO +3157+03556 Asia/Amman |
| JP +353916+1394441 Asia/Tokyo |
| @@ -239,7 +240,8 @@ |
| KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) |
| KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda |
| KZ +5017+05710 Asia/Aqtobe Aqtobe/Aktobe |
| -KZ +4431+05016 Asia/Aqtau Atyrau/Atirau/Gur'yev, Mangghystau/Mankistau |
| +KZ +4431+05016 Asia/Aqtau Mangghystau/Mankistau |
| +KZ +4707+05156 Asia/Atyrau Atyrau/Atirau/Gur'yev |
| KZ +5113+05121 Asia/Oral West Kazakhstan |
| LA +1758+10236 Asia/Vientiane |
| LB +3353+03530 Asia/Beirut |
| @@ -330,14 +332,15 @@ |
| RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad |
| RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area |
| RU +4457+03406 Europe/Simferopol MSK+00 - Crimea |
| -RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd, Saratov |
| +RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd |
| RU +5836+04939 Europe/Kirov MSK+00 - Kirov |
| RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan |
| +RU +5134+04602 Europe/Saratov MSK+01 - Saratov |
| +RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk |
| RU +5312+05009 Europe/Samara MSK+01 - Samara, Udmurtia |
| -RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk |
| RU +5651+06036 Asia/Yekaterinburg MSK+02 - Urals |
| RU +5500+07324 Asia/Omsk MSK+03 - Omsk |
| -RU +5502+08255 Asia/Novosibirsk MSK+03 - Novosibirsk |
| +RU +5502+08255 Asia/Novosibirsk MSK+04 - Novosibirsk |
| RU +5322+08345 Asia/Barnaul MSK+04 - Altai |
| RU +5630+08458 Asia/Tomsk MSK+04 - Tomsk |
| RU +5345+08707 Asia/Novokuznetsk MSK+04 - Kemerovo |
| @@ -395,7 +398,6 @@ |
| UA +4837+02218 Europe/Uzhgorod Ruthenia |
| UA +4750+03510 Europe/Zaporozhye Zaporozh'ye/Zaporizhia; Lugansk/Luhansk (east) |
| UG +0019+03225 Africa/Kampala |
| -UM +1645-16931 Pacific/Johnston Johnston Atoll |
| UM +2813-17722 Pacific/Midway Midway Islands |
| UM +1917+16637 Pacific/Wake Wake Island |
| US +404251-0740023 America/New_York Eastern (most areas) |
| Index: contrib/tzdata/zone1970.tab |
| =================================================================== |
| --- contrib/tzdata/zone1970.tab (版本 324740) |
| +++ contrib/tzdata/zone1970.tab (版本 325322) |
| @@ -2,7 +2,7 @@ |
| # |
| # This file is in the public domain. |
| # |
| -# From Paul Eggert (2014-07-31): |
| +# From Paul Eggert (2017-10-01): |
| # This file contains a table where each row stands for a zone where |
| # civil time stamps have agreed since 1970. Columns are separated by |
| # a single tab. Lines beginning with '#' are comments. All text uses |
| @@ -16,7 +16,7 @@ |
| # either +-DDMM+-DDDMM or +-DDMMSS+-DDDMMSS, |
| # first latitude (+ is north), then longitude (+ is east). |
| # 3. Zone name used in value of TZ environment variable. |
| -# Please see the 'Theory' file for how zone names are chosen. |
| +# Please see the theory.html file for how zone names are chosen. |
| # If multiple zones overlap a country, each has a row in the |
| # table, with each column 1 containing the country code. |
| # 4. Comments; present if and only if a country has multiple zones. |
| @@ -136,6 +136,7 @@ |
| CI,BF,GM,GN,ML,MR,SH,SL,SN,ST,TG +0519-00402 Africa/Abidjan |
| CK -2114-15946 Pacific/Rarotonga |
| CL -3327-07040 America/Santiago Chile (most areas) |
| +CL -5309-07055 America/Punta_Arenas Region of Magallanes |
| CL -2709-10926 Pacific/Easter Easter Island |
| CN +3114+12128 Asia/Shanghai Beijing Time |
| CN +4348+08735 Asia/Urumqi Xinjiang Time |
| @@ -211,8 +212,9 @@ |
| KR +3733+12658 Asia/Seoul |
| KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) |
| KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda |
| -KZ +5017+05710 Asia/Aqtobe Aqtobe/Aktobe |
| -KZ +4431+05016 Asia/Aqtau Atyrau/Atirau/Gur'yev, Mangghystau/Mankistau |
| +KZ +5017+05710 Asia/Aqtobe Aqtöbe/Aktobe |
| +KZ +4431+05016 Asia/Aqtau Mangghystaū/Mankistau |
| +KZ +4707+05156 Asia/Atyrau Atyraū/Atirau/Gur'yev |
| KZ +5113+05121 Asia/Oral West Kazakhstan |
| LB +3353+03530 Asia/Beirut |
| LK +0656+07951 Asia/Colombo |
| @@ -288,14 +290,15 @@ |
| RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad |
| RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area |
| RU +4457+03406 Europe/Simferopol MSK+00 - Crimea |
| -RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd, Saratov |
| +RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd |
| RU +5836+04939 Europe/Kirov MSK+00 - Kirov |
| RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan |
| +RU +5134+04602 Europe/Saratov MSK+01 - Saratov |
| +RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk |
| RU +5312+05009 Europe/Samara MSK+01 - Samara, Udmurtia |
| -RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk |
| RU +5651+06036 Asia/Yekaterinburg MSK+02 - Urals |
| RU +5500+07324 Asia/Omsk MSK+03 - Omsk |
| -RU +5502+08255 Asia/Novosibirsk MSK+03 - Novosibirsk |
| +RU +5502+08255 Asia/Novosibirsk MSK+04 - Novosibirsk |
| RU +5322+08345 Asia/Barnaul MSK+04 - Altai |
| RU +5630+08458 Asia/Tomsk MSK+04 - Tomsk |
| RU +5345+08707 Asia/Novokuznetsk MSK+04 - Kemerovo |
| @@ -314,10 +317,11 @@ |
| SA,KW,YE +2438+04643 Asia/Riyadh |
| SB -0932+16012 Pacific/Guadalcanal |
| SC -0440+05528 Indian/Mahe |
| -SD,SS +1536+03232 Africa/Khartoum |
| +SD +1536+03232 Africa/Khartoum |
| SE +5920+01803 Europe/Stockholm |
| SG +0117+10351 Asia/Singapore |
| SR +0550-05510 America/Paramaribo |
| +SS +0451+03137 Africa/Juba |
| SV +1342-08912 America/El_Salvador |
| SY +3330+03618 Asia/Damascus |
| TC +2128-07108 America/Grand_Turk |