not from ftp://ftp.iana.org/tz/releases/tzdata2022agtz.tar.gz
(2022a comes from ftp://ftp.iana.org/tz/releases/tzdata2022a.tar.gz)
Note that 2022agtz is mechanically derived from 2022a by moving back
zone data from the "backzone" file that had been removed as "redundant"
(because differences to some other zone are all prior to 1970) so that
this pre 1970 data is restored. It isn't necessarily correct in all
cases, but it is usually better than using some other zone's data which
is just as likely to be incorrect for where it applies, and more so elsewhere.
Summary of changes in tzdata2022a (2022-03-15 23:02:01 -0700):
* Palestine will spring forward on 2022-03-27, not 2022-03-26.
* From 1992 through spring 1996, Ukraine's DST transitions were at
02:00 standard time, not at 01:00 UTC.
* Chile's Santiago Mean Time and its LMT precursor have been adjusted
eastward by 1 second to align with past and present law.
* Changes to commentary.
Release 2020f - 2020-12-29 00:17:46 -0800
No changes to tzdata, just to a part of the build procedure
not used on NetBSD
Release 2020e - 2020-12-22 15:14:34 -0800
Volgograd switched to Moscow time on 2020-12-27 at 02:00.
Correct many pre-1986 transitions, fixing entries originally
derived from Shanks. The fixes include changes to:
Australia, Bahamas, Bermuda, Belize, Ghana, Israel and Palestine,
Kenya and adjacent, Nigeria and adjacent, Seychelles, Vanuatu
Australia/Currie has been moved to the 'backward' file and its
corrected data moved to the 'backzone' file.
To better match legislation in Turks and Caicos, the 2015 shift to
year-round observance of -04 is now modeled as AST throughout before
returning to Eastern Time with US DST in 2018, rather than as
maintaining EDT until 2015-11-01.
Summary of changes in tzdata2020b (2020-10-06 18:35:04 -0700):
Revised predictions for Morocco's changes starting in 2023.
Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
Macquarie Island has stayed in sync with Tasmania since 2011.
Casey, Antarctica is at +08 in winter and +11 in summer.
Summary of changes in tzdata2020a (2020-04-23 16:03:47 -0700):
Morocco resumes summer time on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08 (summer time
will not end this year)..
America/Nuuk renamed from America/Godthab (both names now exist).
Summary of changes in tzdata2019c (2019-09-11 08:59:48 -0700):
Fiji observes DST from 2019-11-10 to 2020-01-12
Norfolk Island starts observing Australian-style DST
Plus historic corrections to time in Turkey (1940-85)
South Korea (1948-51) Detroit (US) (1967-8), Perry County
(Indiana, US) (pre 1970) Edmonton (CA) (1967, 1969)
Vancouver (CA) (1946), Vienna (AT) (1946), Kaliningrad (1945-6).
Louisville (US) (1946-50). Brussles (BE) (1892).
Hong Kong Winter Time (1941) now listed as being "DST".
Summary of changes in tzdata2019b (2019-07-01 00:09:53 -0700):
Brazil no longer observes DST
Predictions for Morocco extended to 2087.
Panestine (March 2019) time zone change date corrected
(and guesses for future transitions revised).
Historic updates: Honk Kong (1941 - 1947), Italy (1866).
Release 20198 - 2019-03-25 22:01:33 -0700
Briefly:
Palestine summer time starts on 2019-03-30 instead of 2019-03-23.
Metlakatla switched back to rejoin Alaska Time on 2019-01-20 at 02:00.
Israel observed summer time in 1980 (08-02/09-13) and 1984 (05-05/08-25).
Etc/UCT is now a backward-compatibility link to Etc/UTC, instead
of being a separate zone that generates the abbreviation "UCT".
Summary of changes in tzdata2018i (2018-12-30 11:05:43 -0800):
Due to a change in government, Sao Tome and Principe switches back
from +01 to +00 on 2019-01-01 at 02:00.
Summary of changes in tzdata2018h (2018-12-23 17:59:32 -0800):
Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to
+05 on 2018-12-21. This is a zone split as Qostanay (aka
Kostanay) did not switch, so create a zone Asia/Qostanay.
Metlakatla, Alaska observes PST this winter only.
Add predictions for Iran from 2038 through 2090.
Changes to some old timestamps for Nauru (1979) Guam (1959-77),
Hong Kong (1904, 1941, 1945, 1952) (others in Pacific during WWII)
Volgograd moves from +03 to +04 on 2018-10-28.
Fiji ends DST 2019-01-13, not 2019-01-20.
Most of Chile changes DST dates, effective 2019-04-06.
Plus corrections to North Korea's 2018-05-05 and China's April 1988
updates (getting the actual time/date of the transition correct)
Corrections for Macau pre 1992, Japan in late 1940's - early 1950's,
and China (Shanghai) 1940's. The Phillipines get their timezone
name abbreviations back.
Summary of changes in tzdata2018e (2018-05-01 23:42:51 -0700):
News for the tz database
Release 2018e - 2018-05-01 23:42:51 -0700
North Korea switches back to +09 on 2018-05-05 (tomorrow!)
Summary of changes in tzdata2018d (2018-03-22 07:05:46 -0700):
In 2018, Palestine starts DST on March 24 (today!), not March 31
Casey Station in Antarctica changed from +11 to +08 on 2018-03-11
at 04:00.
Various adjustments to some historical conversions (several for
Uruguay (1920 .. 1990), one fpr Enderbury and Kiritimati (1994/5),
one for Portugal and colonies (1912) and Jamaica and Turks & Caicos
(pre 1913)).
Summary of changes in tzdata2018c (2018-01-22 23:00:44 -0800):
Summary of changes in tzdata2018b (2018-01-17 23:24:48 -0800):
Summary of changes in tzdata2018a (2018-01-12 22:29:21 -0800):
2018a and 2018b were (kind of) released, but never announced.
Some "issues" were found with them that caused the relatively
quick updates...
The updates are from the previous version (2017c) to the
current one (2018c) - that 2018a & 2018b intervened is best
forgotten... (changes in 2018a that were corrected (2018b) or
reverted (2018c) are not mentioned).
Briefly:
Sao Tome and Principe (An island nation off west coast of Equatorial Africa)
switched from +00 to +01.
Brazil's DST will now start on November's first Sunday.
Use Debian-style installation locations, instead of 4.3BSD-style.
(this does not affect NetBSD, we do not use the tzdata Makefile)
Changes to past and future time stamps
Sao Tome and Principe switched from +00 to +01 on 2018-01-01 at
01:00. (Thanks to Steffen Thorsen and Michael Deckers.)
Changes to future time stamps
Starting in 2018 southern Brazil will begin DST on November's
first Sunday instead of October's third Sunday. (Thanks to
Steffen Thorsen.)
Changes to past time stamps
Japanese DST transitions (1948-1951) were Sundays at 00:00, not
Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.)
A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected. The 'backzone' and 'zone.tab' files did not agree
with the 'africa' and 'zone1970.tab' files. (Problem reported by
Michael Deckers.)
The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST, to be more consistent with the convention
used for Latvian Summer Time (1918-9) and for British Summer Time.
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.
Some corrections to (mostly ancient) historical data.
Summary of changes in tzdata2017b (2017-03-17 07:30:38 -0700):
Haiti resumed observance of DST in 2017 (on Mar 12)
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" (tzdata2016a) is one byte over the POSIX limit.
Summary of changes in tzdata2017a (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.
Chile's Region of Magallanes moves from -04/-03 to -03 year-round.
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.
Ecuador observed DST from 1992-11-28 to 1993-02-05.
Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21.
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.
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.
Summary of changes in tzdata2016j (2016-11-22 23:17:13 -0800):
Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This creates a new zone Europe/Saratov.
New zone Asia/Atyrau for Atyrau Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994.
Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.
Summary of changes in tzdata2016i (2016-11-01 23:19:52 -0700):
Cyprus split into two time zones on 2016-10-30 (new zone is
Asia/Famagusta and is UTC+3 year round). Tonga reintroduces
summer time on 2016-11-06 (assumed for now to be aligned with Fiji).
This year's summer time switch (from +08 to +11) for Antarctica/Casey
occurred 2016-10-22.
Also (minor) adjustments to some historic data for Italy (most
recent applies to time of day of switch out of summer time in period
1967-1970 & 1972-1974, other changes relate to 1910's and 1940's.)
Summary of changes in tzdata2016h (2016-10-19 23:17:57 -0700):
Asia/Gaza and Asia/Hebron end of summer time for 2016 is
2016-10-29 at 01:00 rather than 2016-10-21 at 00:00 (which
is within hours after this update). Guess that future
end dates will be the last Sat of October.
Corrected some historic time (and one date) transition
times for Turkey (all 1990 or before.)
Switch Sri-Lanka to use numeric abbreviation for time zone
as the tzdata invented one is not correct, and the correct
one seems not to be widely used.
Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)
Summary of changes in tzdata2016f (2016-07-05 16:26:51 +0200):
* The Egyptian government changed its mind on short notice, and
Africa/Cairo will not introduce DST starting 2016-07-07 after all.
* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
* Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
abbreviations instead of invented ones.
* Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.
Summary of changes in tzdata2016e (2016-06-14 08:46:16 -0700):
* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
(change obsoleted by 2016f)
* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation.
* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day.
* zic now outputs a dummy transition at time 2**31 - 1 in zones
whose POSIX-style TZ strings contain a '<'.
* Changes affecting documentation and commentary.
Summary of changes in tzdata2016d (2016-04-17 22:50:29 -0700):
* America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
* Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
* New zone Asia/Tomsk, split off from Asia/Novosibirsk.
* New zone Europe/Kirov, split off from Europe/Volgograd.
* Russia and nearby locations had daylight-saving transitions on
1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
1992-03-28 at 23:00 and 1992-09-26 at 23:00.
* Many corrections to historical time in Kazakhstan from 1991
through 2005.
* Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
Summary of changes in tzdata2016c (2016-03-23 00:51:27 -0700):
* Azerbaijan no longer observes DST.
* Chile reverts from permanent to seasonal DST.
* Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+02/+03 on 1989-03-26, not 1991-03-31.
* Several updates and URLs for historical and proposed Russian changes.
Summary of changes in tzdata2016b (2016-03-12 17:30:14 -0800):
* New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
2016-03-27 at 02:00 local time.
* As a trial of a new system that needs less information to be made up,
the new zones use numeric time zone abbreviations like "+04"
instead of invented abbreviations like "ASTT".
* Haiti will not observe DST in 2016.
* Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
* Europe/Chisinau observed DST during 1990, and switched from +04 to
+03 at 1990-05-06 02:00, instead of switching from +03 to +02.
* 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not
KUYT/KUYST.
* tzselect's diagnostics and checking, and checktab.awk's checking,
have been improved.
* tzcode now builds under MinGW.
* tzselect now tests Julian-date TZ settings more accurately.
* Comments in zone tables have been improved.
* tzselect again limits its menu comments so that menus fit on a
24x80 alphanumeric display.
* A new web page tz-how-to.html.
* In the Theory file, the description of possible time zone abbreviations in
tzdata has been cleaned up, as the old description was unclear and
inconsistent.
Summary of changes in tzdata2016a (2016-01-26 23:28:02 -0800):
* America/Cayman will not observe daylight saving this year after all.
* Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
* Asia/Tehran now has DST predictions for the year 2038 and later,
to be March 21 00:00 to September 21 00:00.
* America/Metlakatla switched from PST all year to AKST/AKDT on
2015-11-01 at 02:00.
* America/Santa_Isabel has been removed, and replaced with a
backward compatibility link to America/Tijuana.
* Asia/Karachi's two transition times in 2002 were off by a minute.
* Changes affecting documentation and commentary.
Summary of changes in tzdata2015g (2015-10-01 00:39:51 -0700):
* Turkey's 2015 fall-back transition is scheduled for Nov.
* Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
* Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
* Fort Nelson, British Columbia will not fall back on 2015-11-01.
* Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00.
* Changes affecting documentation.
Summary of changes in tzdata2015f (2015-08-10 18:06:56 -0700):
* North Korea switches to +0830 on 2015-08-15.
* Uruguay no longer observes DST.
* Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
* The two characters '%z' in a zone format now stand for the UTC
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
five hours and thirty minutes ahead.
* Comments for America/Halifax and America/Glace_Bay have been improved.
* Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
Europe/Sofia, and Europe/Tallinn.
* Changes affecting documentation.
Summary of changes in tzdata2015e (2015-06-13 10:56:02 -0700):
* Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
not 06-13 and 07-18 as we had guessed.
* Assume Cayman Islands will observe DST starting next year, using US rules.
* The file 'iso3166.tab' now uses UTF-8, so that its entries can better
spell the names of Åland Islands, Côte d'Ivoire, and Réunion.
Summary of changes in tzdata2015d (2015-04-24 08:09:46 -0700):
* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01.
* The abbreviations for Hawaii-Aleutian standard and daylight times
have been changed from HAST/HADT to HST/HDT, as per US Government
Printing Office style.
Summary of changes in tzdata2015c (2015-04-11 08:55:55 -0700):
* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. This affects 2015, 2026, 2037,
2043, etc.
* Changes to pre-1991 Chile-related time stamps in America/Santiago,
Antarctica/Palmer, and Pacific/Easter.
* The America/Montreal zone has been turned into a link, as it differed
from an existing zone only for pre-1970 time stamps.
Summary of changes in tzdata2015b (2015-03-19 23:28:11 -0700):
* Mongolia will start observing DST again in 2015, from the last
Saturday in March at 02:00 to the last Saturday in September at 00:00.
* Palestine will start DST on March 28, not March 27, in 2015.
* The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a
regression.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps.
* Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD".
* Changes affecting commentary.
Summary of changes in tzdata2015a (2015-01-29 22:35:20 -0800):
* The Mexican state of Quintana Roo, represented by America/Cancun,
will shift from Central Time with DST to Eastern Time without DST
on 2015-02-01 at 02:00.
* Chile will not change clocks in April or thereafter; its new standard time
will be its old daylight saving time. This affects America/Santiago,
Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.)
* New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
* Iceland observed DST in 1919 and 1921, and its 1939 fallback
transition was Oct.
* Some more zones have been turned into links, when they differed
from existing zones only for older time stamps.
* Changes affecting commentary.
Summary of changes in tzdata2014j (2014-11-10 17:37:11 -0800):
* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00.
* Many pre-1989 time stamps have been corrected for Asia/Seoul and
Asia/Pyongyang, based on sources for the Korean-language Wikipedia
entry for time in Korea.
* Some more zones have been turned into links, when they differed
from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.
Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, to give tzselect
users in Vietnam two choices, since north and south Vietnam
disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for older (pre-1970) time stamps.
* Changes affecting commentary.
Summary of changes in tzdata2014i (2014-10-21 22:04:57 -0700):
* Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
Guess that future years will use a similar pattern.
* A new Zone Pacific/Bougainville, for the part of Papua New Guinea
that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
* Since Belarus is not changing its clocks even though Moscow is,
the time zone abbreviation in Europe/Minsk is changing from FET
to its more-traditional value MSK on 2014-10-26 at 01:00.
* The new abbreviation IDT stands for the pre-1976 use of UT+8 in
Indochina, to distinguish it better from ICT (UT+7).
* Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976.
Asia/Ho_Chi_Minh has been added to zone1970.tab, since
north and south Vietnam disagreed after our 1970 cutoff.
* Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
they differed from existing zones only for pre-1970 time stamps.
* Changes affecting commentary.
Summary of changes in tzdata2014h (2014-09-25 18:59:03 -0700):
* America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
* Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
not 1920-01-06.
* 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.
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,
Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
* Changes affecting documentation and commentary.
Summary of changes in tzdata2014g (2014-08-28 12:31:23 -0700):
* Turks & Caicos is switching from US eastern time to UTC-4 year-round,
modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
* Time in Russia or the USSR before 1926 or so has been corrected by
a few seconds for several zones, and a few minutes for
Asia/Yekaterinburg.
* The Portuguese decree of 1911-05-26 took effect on 1912-01-01, not
on the date of the decree. This affects 1911 time stamps in
Africa/Bissau, Africa/Luanda, Atlantic/Azores, and Atlantic/Madeira.
* Lisbon's pre-1912 GMT offset was -0:36:45 (rounded from -0:36:44.68),
not -0:36:32.
* 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
the tz database, is often poorly sourced, and contains some data
that is known to be incorrect.
* 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.
Their old contents have been moved to the 'backzone' file.
* Changes affecting documentation and commentary.
and NEWS file from https://github.com/eggert/tz/raw/2014f/NEWS.
NetBSD's tzdata code is being moved from src/share/zoneinfo to
src/external/public-domain/tz/dist, to simplify future maintenance.
This is the same version of tzata that was previously imported to
src/share/zoneinfo. The NEWS file has been added to the import,
although it is not distributed in the tzdata2014f.tar.gz file.
Summary of changes in tzdata2014f (2014-08-05 17:42:36 -0700):
* Russia will subtract an hour from most of its time zones on 2014-10-26
at 02:00 local time. There are some exception.
* The following new zones are added to deal with changes in Russia:
Asia/Chita and Asia/Srednekolymsk.
* Australian eastern time zone abbreviations are now AEST/AEDT not EST,
and similarly for the other Australian zones.
* Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7)
effective 2014-10-26 at 02:00 local time.
* The time zone abbreviation for Xinjiang Time (observed in Ürümqi)
has been changed from URUT to XJT.
* Prefer MSK/MSD for Moscow time in Russia, even in other cities.
* Change time zone abbreviations in (western) Samoa to use "ST" and
"DT" suffixes, as this is more likely to match common practice.
* America/Metlakatla now uses PST, not MeST, to abbreviate its time zone.
* Time zone abbreviations have been updated for Japan's two time
zones used 1896-1937.
* 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
1980 transition to UTC+8 has been removed, so that it is now at
UTC+6 and not UTC+8.
* Some zones have been turned into links, when they differed from existing
zones only for older UTC offsets where the data were likely invented.
The affected zones are: Africa/Bamako, Africa/Banjul,
Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome,
Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and
Atlantic/St_Helena. This also affects the backwards-compatibility
link Africa/Timbuktu.
* Asia/Shanghai's pre-standard-time UT offset has been changed from
8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
transition to standard time has been changed from 1928 to 1901.
* Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01,
then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945.
In 1946 it observed DST from 05-15 through 09-30; in 1947
from 04-15 through 10-31; and in 1979 from 07-01 through 09-30.
* Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950.
* Europe/Helsinki's 1942 fall-back transition was 1942-10-04 at 01:00, not
1942-10-03 at 00:00.
* Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period
from 1911 to 1950.
* Pacific/Chatham has been changed to New Zealand standard time plus
45 minutes for the period before 1957, reflecting a 1956 remark in
the New Zealand parliament.
* Europe/Budapest has several pre-1946 corrections.
* Africa/Accra is now assumed to have observed DST from 1920 through 1935.
* Time in Russia before 1927 or so has been corrected by a few seconds in
the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi,
Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and
Europe/Riga.
* A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data.
The new file's extended format allows multiple country codes per zone.
The older file is still installed but is deprecated; its format is
not changing and it will still be distributed for a while, but new
applications should use the new file.
* The file 'iso3166.tab' is planned to switch from ASCII to UTF-8.
It is still ASCII now, but commentary about the switch has been added.
* Changes affecting documentation and commentary.
Summary of changes in tzdata2014e (2014-06-12 21:53:52 -0700):
* 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
switch to standard time at 24:00 the last Thursday before Ramadan, and
back to DST at 00:00 the first Friday after Ramadan.
* Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks
to Milamber Space Network.) Guess that from 2015 on Morocco will
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.
* The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of
"MSD" for Moscow's double daylight time in summer 1921. Also, a typo
"VLASST" has been repaired to be "VLAST" for Vladivostok summer time
in 1991. (Thanks to Hank W. for reporting the problems.)
* Changes affecting commentary.
Summary of changes in tzdata2014d (2014-05-27 21:34:40 -0700):
* Changes affecting documentation.
Changes from tzdata2013i to tzdata2014a:
Turkey begins DST on 2014-03-31, not 03-30.
Fiji ended DST on 2014-01-19 at 02:00, not 03:00.
Ukraine switched from Moscow to Eastern European time on 1990-07-01
(not 1992-01-01), and observed DST during the entire next winter.
In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to
09-03.
Also some changes affecting commentary and documentation
Changes from tzdata2014a to tzdata2014b:
Crimea switches to Moscow time on 2014-03-30 at 02:00 local time.
New entry for Troll station, Antarctica.
Also some changes affecting commentary and documentation
Changes from tzdata2014b to tzdata2014c:
Egypt observes DST starting 2014-05-15 at 24:00.
Guess that DST will stop during the same Ramadan dates as Morocco,
and make some other guesses.
Also some changes affecting commentary and documentation
Major changes from tzdata2013d to tzdata2013e:
Fiji (Pacific/Fiji) DST in 2013 starts on October 27, not October 20.
Several zones have been turned into links, either to correct errors,
or where the differences were in older data (before 1943) that was
thought to be unreliable.
Some time zone abbreviations have been changed.
Major changes from tzdata2013e to tzdata2013f:
Tocantins, Brazil (America/Araguaina) DST will not start in September
2013.
Jordan (Asia/Amman) moves to permanent UTC+3 (instead of UTC+2 with
permanent DST since 2012).
Palestine (Asia/Hebron and Asia/Gaza) will end DST at 00:00, not
01:00, as from September 2013.
Major changes from tzdata2013f to tzdata2013g:
Morocco (Africa/Casablanca) now observes DST from the last Sunday
in March to the last Sunday in October, not April to September.
respectively.
Major changes from tzdata2013g to tzdata2013h:
Libya (Africa/Tripoli) has switched its time zone back to UTC+2
without DST, instead of UTC+1 with DST.
Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules.
Acre, Brazil (America/Rio_Branco) and (we guess) western Amazonas,
Brazil (America/Eirunepe), will switch from UTC-4 to UTC-5 on
2013-11-10.
Add entries for DST transitions in Morocco in the year 2038. This
avoids some year-2038 glitches introduced in 2013g.
Major changes from tzdata2013h to tzdata2013i:
Jordan (Asia/Amman) switches back to UTC+2 standard time at 00:00 on
December 20, 2013. The 2006-2011 DST transition schedule is planned
to resume in 2014. The switch to permanent UTC+3 is cancelled.
In 2004, Cuba (America/Havana) began DST on March 28, not April 4.
The files solar87, solar88, and solar89 are no longer distributed.
The zones built from those files (Asia/Riyadh{87,88,89}) and
Mideast/Riyadh{87,88,89}) are no longer installed. They were a
negative experiment -- that is, a demonstration that tz data can
represent solar time only with some difficulty and error. Their
presence in the distribution caused confusion, as Riyadh civil time
was generally not solar time in those years.
Summary of changes from tzdata2013c to tzdata2013d:
Changes affecting current and future time stamps:
Morocco's midsummer transitions this year are July 7 and August 10,
not July 9 and August 8. (Thanks to Andrew Paprocki.)
Israel now falls back on the last Sunday of October.
(Thanks to Ephraim Silverberg.)
Changes affecting past time stamps:
Specify Jerusalem's location more precisely; this changes the pre-1880
times by 2 s.
Changing affecting metadata only:
Fix typos in the entries for country codes BQ and SX.
Changes affecting documentation and commentary:
Deemphasize the significance of national borders.
Update the zdump man page.
Remove obsolete NOID comment (thanks to Denis Excoffier).
Update several URLs and comments in the web pages.
Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler).
Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka).
Summary of changes from tzdata2013b to tzdata2013c:
Changes affecting current and future time stamps:
Palestine observed DST starting March 29, 2013.
From 2013 on, Gaza and Hebron both observe DST.
Assume that the recent change to Paraguay's DST rules is permanent.
Changes affecting past time stamps:
Fix some historical data for Palestine.
Fix times of habitation for Macquarie.
Changing affecting metadata only:
Macquarie Island is politically part of Australia, not Antarctica.
Sort Macquarie more-consistently with other parts of Australia.
Changes from tzdata2013a to tzdata2013b:
Changes affecting current and future time stamps:
Haiti uses US daylight-saving rules this year, and presumably future years.
This changes time stamps 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.
Morocco does not observe DST during Ramadan;
try to predict Ramadan in Morocco as best we can.
(Thanks to Erik Homoet for the heads-up.)
Changes affecting commentary:
Update URLs in tz-link page. Add URLs for webOS, BB10, iOS.
Update URL for Solaris. Mention Internet RFC 6557.
Update Internet RFCs 2445->5545, 2822->5322.
Switch from FTP to HTTP for Internet RFCs.
Changes from tzdata2012j to tzdata2013a:
Change affecting binary data format:
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 Arthor David Olson.)
Changes affecting current and future time stamps:
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.
(Thanks to Steffen Thorsen and Robert Elz.)
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.
These were deduced from: Milne J. Civil time. Geogr J. 1899
Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>.
Changes from tzdata2012i to tzdata2012j:
Libya moved to CET this weekend, but with DST planned next year.
(Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.)
Various fixes to documentation and commentary.
Changes from tzdata2012g to tzdata2012h:
Bahia no longer has DST. (Thanks to Kelley Cook.)
Tocantins has DST. (Thanks to Rodrigo Severo.)
Israel has new DST rules next year. (Thanks to Ephraim Silverberg.)
Jordan stays on DST this winter. (Thanks to Steffen Thorsen.)
Web page updates.
Changes from tzdata2012f to tzdata2012g:
Samoa fall 2012 and later. (Thanks to Nicholas Pereira
and Robert Elz.)
Palestine fall 2012. (Thanks to Steffen Thorsen.)
In addition to those changes, the tzdata distribution now includes
a copy of the Makefile from the tzcode distribution. NetBSD's
src/share/zoneinfo/Makefile is completely different from the Makefile
that is now included in the tzdata distribution.
Majo changes from tzdata2012d to tzdata2012e:
* australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14.
(Thanks to Steffen Thorsen.)
* Use a single version number for both code and data.
Major changes from tzdata2011b to tzdata2011c:
africa
Summer time changes for Morocco (to start late April 2012)
asia
Changes for 2012 for Gaza & the West Bank (Hebron) and Syria
northamerica
Haiti following US/Canada rules for 2012 (and we're assuming,
for now anyway, for the future).
Major changes from tzdata2011c to tzdata2011d:
Morocco does not observe DST from Jul 20 03:00 to
Aug 20 02:00 [2012].
Infrastructure changes to accommodate how the tz
code and data are released on IANA.
kre