Sync zoneinfo database with tzdata2022a from ftp://ftp.iana.org/tz/releases

* Palestine will spring forward on 2022-03-27, not 2022-03-26.

For a detailed list of changes, see share/zoneinfo/NEWS.

Sync zoneinfo database with tzdata2021e from ftp://ftp.iana.org/tz/releases

Previously, we were on 2021a.

For a detailed list of changes, see share/zoneinfo/NEWS.

Sync zoneinfo database with tzdata2021a from ftp://ftp.iana.org/tz/releases

* South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

* Also update leap second info.

For a detailed list of cha

Sync zoneinfo database with tzdata2021a from ftp://ftp.iana.org/tz/releases

* South Sudan changes from +03 to +02 on 2021-02-01 at 00:00.

* Also update leap second info.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2020e from ftp://ftp.iana.org/tz/releases

* Volgograd switched to Moscow time on 2020-12-27 at 02:00.

* Correct many pre-1986 transitions.

For a detailed list of

Sync zoneinfo database with tzdata2020e from ftp://ftp.iana.org/tz/releases

* Volgograd switched to Moscow time on 2020-12-27 at 02:00.

* Correct many pre-1986 transitions.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2020b from ftp://ftp.iana.org/tz/releases

* Revised predictions for Morocco's changes starting in 2023.

* Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-

Sync zoneinfo database with tzdata2020b from ftp://ftp.iana.org/tz/releases

* 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.

* Various other fixes and corrections in past timestamps.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2020a from ftp://ftp.iana.org/tz/releases

* Morocco's second spring-forward transition in 2020 will be May 31,
not May 24 as predicted earlier. (Thanks to Seml

Sync zoneinfo database with tzdata2020a from ftp://ftp.iana.org/tz/releases

* Morocco's second spring-forward transition in 2020 will be May 31,
not May 24 as predicted earlier. (Thanks to Semlali Naoufal.)

* Canada's Yukon advanced to -07 year-round on 2020-03-08.

* America/Nuuk renamed from America/Godthab.

* Shanghai observed DST in 1919. (Thanks to Phake Nick.)

* To reflect current usage in English better, America/Godthab has
been renamed to America/Nuuk. A backwards-compatibility link
remains for the old name.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2019b from ftp://ftp.iana.org/tz/releases

* Brazil has canceled DST and will stay on standard time indefinitely.

* Predictions for Morocco now go through 2087 inst

Sync zoneinfo database with tzdata2019b from ftp://ftp.iana.org/tz/releases

* Brazil has canceled DST and will stay on standard time indefinitely.

* Predictions for Morocco now go through 2087 instead of 2037.

* Palestine's 2019 spring transition was 03-29 at 00:00, not 03-30
at 01:00.

* Fix various past transitions for Hong Kong and Italy.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2019a from ftp://ftp.iana.org/tz/releases

* Palestine will not start DST until 2019-03-30, instead of 2019-03-23 as
previously predicted.

* Metlakatla rejoined A

Sync zoneinfo database with tzdata2019a from ftp://ftp.iana.org/tz/releases

* Palestine will not start DST until 2019-03-30, instead of 2019-03-23 as
previously predicted.

* Metlakatla rejoined Alaska Time (from previously Pacific Standard Time)
on 2019-01-20.

* Affecting older timestamps only: Israel observed DST in 1980 and 1984.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018i from ftp://ftp.iana.org/tz/releases

* Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21.

* New zone Asia/Qostanay because Qostanay, Kazakhstan didn't

Sync zoneinfo database with tzdata2018i from ftp://ftp.iana.org/tz/releases

* Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21.

* New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move.

* Metlakatla, Alaska observes PST this winter only.

* Guess Morocco will continue to adjust clocks around Ramadan.

* Add predictions for Iran from 2038 through 2090.

* São Tomé and Príncipe switches from +01 to +00 on 2019-01-01.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018g from ftp://ftp.iana.org/tz/releases

* Morocco switched to permanent +01 on 2018-10-27.

* Change HDT to HWT/HPT for WWII-era abbreviations in Hawaii.

For a d

Sync zoneinfo database with tzdata2018g from ftp://ftp.iana.org/tz/releases

* Morocco switched to permanent +01 on 2018-10-27.

* Change HDT to HWT/HPT for WWII-era abbreviations in Hawaii.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018f from ftp://ftp.iana.org/tz/releases

* 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

Sync zoneinfo database with tzdata2018f from ftp://ftp.iana.org/tz/releases

* 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.

* Use PST and PDT for Philippine time.

* Various adjustments to past timestamps.

* Miscellaneous fixes and adjustments.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018e from ftp://ftp.iana.org/tz/releases

* North Korea switched back from +0830 to +09 on May, 5.

* Miscellaneous changes, see NEWS.

For a detailed list of chang

Sync zoneinfo database with tzdata2018e from ftp://ftp.iana.org/tz/releases

* North Korea switched back from +0830 to +09 on May, 5.

* Miscellaneous changes, see NEWS.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018d from ftp://ftp.iana.org/tz/releases

* Palestine started DST a week earlier, on March 24.

* Various changes to past time stamps and zone abbreviations.

For a

Sync zoneinfo database with tzdata2018d from ftp://ftp.iana.org/tz/releases

* Palestine started DST a week earlier, on March 24.

* Various changes to past time stamps and zone abbreviations.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2018b from ftp://ftp.iana.org/tz/releases

* Sao Tome and Principe switched from +00 to +01.

* Brazil's DST will now start on November's first Sunday.

* A discrepa

Sync zoneinfo database with tzdata2018b from ftp://ftp.iana.org/tz/releases

* Sao Tome and Principe switched from +00 to +01.

* Brazil's DST will now start on November's first Sunday.

* A discrepancy of 4 s in timestamps before 1931 in South Sudan has
been corrected.

* The abbreviation invented for Bolivia Summer Time (1931-2) is now
BST instead of BOST.

* Various smaller adjustments.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2017c from ftp://ftp.iana.org/tz/releases

* Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.

* Fiji ends DST 2018-01-14, not 2018-01-21.

* Namibia swit

Sync zoneinfo database with tzdata2017c from ftp://ftp.iana.org/tz/releases

* 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.

For a detailed list of changes, see share/zoneinfo/NEWS.

show more ...

Sync zoneinfo database with tzdata2017a from ftp://ftp.iana.org/tz/releases

* Mongolia no longer observes DST. (Thanks to Ganbold Tsagaankhuu.)

* Chile's Region of Magallanes moves from -04/-03 to

Sync zoneinfo database with tzdata2017a from ftp://ftp.iana.org/tz/releases

* 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.

* 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.)

* 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
zone. Similarly, switch from invented to numeric time zone
abbreviations for a number of other zones.

* 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.

* Move the Pacific/Johnston link from 'australasia' to 'backward',
since Johnston is now uninhabited.

* africa (Africa/Monrovia): The 1972 transition was on January 7,
not May 1. (Shanks was wrong again! and Howse was right.)

* The 'Theory' file now better documents choice of historical time
zone abbreviations. (Problems reported by Michael Deckers.)

show more ...

Sync zoneinfo database with tzdata2016j from ftp://ftp.iana.org/tz/releases

* Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00.
This hives off a new zone Europe/Saratov from Europ

Sync zoneinfo database with tzdata2016j from ftp://ftp.iana.org/tz/releases

* 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.)

* The new zone Asia/Atyrau for Atyraū Region, Kazakhstan, is like
Asia/Aqtau except it switched from +04/+05 to +05/+06 in spring
1999, not fall 1994. (Thanks to Stepan Golosunov.)

* Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote
summer time before 1948. The old use of "EET" was a typo.

* 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.)

show more ...

Sync zoneinfo database with tzdata2016g from ftp://ftp.iana.org/tz/releases

* Turkey switched from EET/EEST (+02/+03) to permanent +03,
effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03"

Sync zoneinfo database with tzdata2016g from ftp://ftp.iana.org/tz/releases

* Turkey switched from EET/EEST (+02/+03) to permanent +03,
effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03" rather
than an invented abbreviation for the new time.

* New leap second 2016-12-31 23:59:60 UTC as per IERS Bulletin C 52.
(Thanks to Tim Parenti.)

* For America/Los_Angeles, spring-forward transition times have been
corrected from 02:00 to 02:01 in 1948, and from 02:00 to 01:00 in
1950-1966.

* For zones using Soviet time on 1919-07-01, transitions to UT-based
time were at 00:00 UT, not at 02:00 local time. The affected
zones are Europe/Kirov, Europe/Moscow, Europe/Samara, and
Europe/Ulyanovsk. (Thanks to Alexander Belopolsky.)

* The Factory zone now uses the time zone abbreviation -00 instead
of a long English-language string, as -00 is now the normal way to
represent an undefined time zone.

* Several zones in Antarctica and the former Soviet Union, along
with zones intended for ships at sea that cannot use POSIX TZ
strings, now use numeric time zone abbreviations instead of
invented or obsolete alphanumeric abbreviations. The affected
zones are Antarctica/Casey, Antarctica/Davis,
Antarctica/DumontDUrville, Antarctica/Mawson, Antarctica/Rothera,
Antarctica/Syowa, Antarctica/Troll, Antarctica/Vostok,
Asia/Anadyr, Asia/Ashgabat, Asia/Baku, Asia/Bishkek, Asia/Chita,
Asia/Dushanbe, Asia/Irkutsk, Asia/Kamchatka, Asia/Khandyga,
Asia/Krasnoyarsk, Asia/Magadan, Asia/Omsk, Asia/Sakhalin,
Asia/Samarkand, Asia/Srednekolymsk, Asia/Tashkent, Asia/Tbilisi,
Asia/Ust-Nera, Asia/Vladivostok, Asia/Yakutsk, Asia/Yekaterinburg,
Asia/Yerevan, Etc/GMT-14, Etc/GMT-13, Etc/GMT-12, Etc/GMT-11,
Etc/GMT-10, Etc/GMT-9, Etc/GMT-8, Etc/GMT-7, Etc/GMT-6, Etc/GMT-5,
Etc/GMT-4, Etc/GMT-3, Etc/GMT-2, Etc/GMT-1, Etc/GMT+1, Etc/GMT+2,
Etc/GMT+3, Etc/GMT+4, Etc/GMT+5, Etc/GMT+6, Etc/GMT+7, Etc/GMT+8,
Etc/GMT+9, Etc/GMT+10, Etc/GMT+11, Etc/GMT+12, Europe/Kaliningrad,
Europe/Minsk, Europe/Samara, Europe/Volgograd, and
Indian/Kerguelen. For Europe/Moscow the invented abbreviation MSM
was replaced by +05, whereas MSK and MSD were kept as they are not
our invention and are widely used.

* Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link.
(Thanks to David Massoud.)

* Comments now cite URLs for some 1917-1921 Russian DST decrees.
(Thanks to Alexander Belopolsky.)

show more ...

Sync zoneinfo database with tzdata2016f from ftp://ftp.iana.org/tz/releases

* The Egyptian government changed its mind on short notice, and
Africa/Cairo did not introduce DST starting 2016-07-07

Sync zoneinfo database with tzdata2016f from ftp://ftp.iana.org/tz/releases

* The Egyptian government changed its mind on short notice, and
Africa/Cairo did not introduce DST starting 2016-07-07 after all.
(Thanks to Mina Samuel.)

* Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
(Thanks to Stepan Golosunov.)

* 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.
(Thanks to Stepan Golosunov.)

show more ...

Sync zoneinfo database with tzdata2016e from ftp://ftp.iana.org/tz/releases

* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
Guess October 27 and 24:00 transitions. (Thank

Sync zoneinfo database with tzdata2016e from ftp://ftp.iana.org/tz/releases

* Africa/Cairo observes DST in 2016 from July 7 to the end of October.
Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.)
For future years, guess April's last Thursday to October's last
Thursday except for Ramadan.

* Locations while uninhabited now use '-00', not 'zzz', as a
placeholder time zone abbreviation. This is inspired by Internet
RFC 3339 and is more consistent with numeric time zone
abbreviations already used elsewhere. The change affects several
arctic and antarctic locations, e.g., America/Cambridge_Bay before
1920 and Antarctica/Troll before 2005.

* Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.)

show more ...

Sync zoneinfo database with tzdata2015f from ftp://ftp.iana.org/tz/releases

* asia: North Korea switches to +0830 on 2015-08-15. (Thanks to
Steffen Thorsen.) The abbreviation remains "KST". (Tha

Sync zoneinfo database with tzdata2015f from ftp://ftp.iana.org/tz/releases

* asia: North Korea switches to +0830 on 2015-08-15. (Thanks to
Steffen Thorsen.) The abbreviation remains "KST". (Thanks to
Robert Elz.)

* europe: Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
(Thanks to Roman Tudos.) Also mention that Herbert Samuel
introduced the term "Summer Time".

* northamerica: Comments for America/Halifax and America/Glace_Bay have
been improved. (Thanks to Brian Inglis.)

* southamerica: Uruguay no longer observes DST. (Thanks to
Steffen Thorsen and Pablo Camargo.)

* Theory: The Theory file mentions naming issues earlier, as these seem
to be poorly publicized (thanks to Gilmore Davidson for reporting
the problem).

* Various: Data entries have been simplified for Atlantic/Canary,
Europe/Simferopol, Europe/Sofia, and Europe/Tallinn. This yields
slightly smaller installed data files for Europe/Simferopol and
Europe/Tallinn. It does not affect timestamps. (Thanks to
Howard Hinnant.)

show more ...

Sync zoneinfo database with tzdata2015e from ftp://ftp.iana.org/tz/releases

* africa: Morocco suspends DST from 2015-06-14 03:00 through
2015-07-19 02:00, not 06-13 and 07-18 as we had guessed.

Sync zoneinfo database with tzdata2015e from ftp://ftp.iana.org/tz/releases

* africa: Morocco suspends DST from 2015-06-14 03:00 through
2015-07-19 02:00, not 06-13 and 07-18 as we had guessed.
(Thanks to Milamber.)

* northamerica: Assume Cayman Islands will observe DST starting next year,
using US rules. Although it isn't guaranteed, it is the most likely.

* southamerica: Typo fix.

show more ...

Sync zoneinfo database with tzdata2015d from ftp://ftp.iana.org/tz/releases

Changes affecting future time stamps

* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00

Sync zoneinfo database with tzdata2015d from ftp://ftp.iana.org/tz/releases

Changes affecting future time stamps

* Egypt's spring-forward transition is at 24:00 on April's last Thursday,
not 00:00 on April's last Friday. 2015's transition will therefore
be on Thursday, April 30 at 24:00, not Friday, April 24 at 00:00.
Similar fixes apply to 2026, 2037, 2043, etc.
(Thanks to Steffen Thorsen.)

* Egypt will not observe DST in 2015 and will consider canceling it
permanently. For now, assume no DST indefinitely.
(Thanks to Ahmed Nazmy and Tim Parenti.)

Changes affecting past time stamps

* The following changes affect some pre-1991 Chile-related time stamps
in America/Santiago, Antarctica/Palmer, and Pacific/Easter.

The 1910 transition was January 10, not January 1.

The 1918 transition was September 10, not September 1.

The UTC-4 time observed from 1932 to 1942 is now considered to be
standard time, not year-round DST.

Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31,
then reverted to standard time, then switched its time zone to
UTC-5 on 1947-04-01.

Assume transitions before 1968 were at 00:00, since we have no data
saying otherwise.

The spring 1988 transition was 1988-10-09, not 1988-10-02.
The fall 1990 transition was 1990-03-11, not 1990-03-18.

Assume no UTC offset change for Pacific/Easter on 1890-01-01,
and omit all transitions on Pacific/Easter from 1942 through 1946
since we have no data suggesting that they existed.

One more zone has been turned into a link, as it differed
from an existing zone only for older time stamps. As usual,
this change affects UTC offsets in pre-1970 time stamps only.
The affected zone is America/Montreal.

* America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
1966-07-01. Also, Yukon's time zone history is documented better.
(Thanks to Brian Inglis and Dennis Ferguson.)

Change affecting past and future time zone abbreviations

* 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. This affects only America/Adak since 1983,
as America/Honolulu was already using the new style.

show more ...

Sync zoneinfo database with tzdata2014j from ftp://ftp.iana.org/tz/releases

* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00. It's currentl

Sync zoneinfo database with tzdata2014j from ftp://ftp.iana.org/tz/releases

* Turks & Caicos' switch from US eastern time to UTC-4 year-round
did not occur on 2014-11-02 at 02:00. It's currently scheduled
for 2015-11-01 at 02:00. (Thanks to Chris Walton.)

* Many corrections to pre-1989 time stamps of Asia/Seoul and
Asia/Pyongyang.

* Change various zones into links where they differ only in pre-1970
time stamps.

* Miscenallenous commentary adjustments.

show more ...

Sync zoneinfo database with tzdata2014h from ftp://ftp.iana.org/tz/releases

We're coming from tzdata2014e.

Changes affecting future time stamps:

* Russia will subtract an hour from most of its tim

Sync zoneinfo database with tzdata2014h from ftp://ftp.iana.org/tz/releases

We're coming from tzdata2014e.

Changes affecting future time stamps:

* Russia will subtract an hour from most of its time zones on 2014-10-26
at 02:00 local time. (Thanks to Alexander Krivenyshev.)

* 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.

* Tons of changes to past time stamps and cleanup. It's really too much
to repeat here. Please see the NEWS file for further information.

show more ...