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Satyen SubramaniamPaul Hohensee
Satyen Subramaniam
authored and
Paul Hohensee
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8352716: (tz) Update Timezone Data to 2025b
Reviewed-by: serb Backport-of: 1d205f5f0704f251eb68165f3caf1e70d542ae63
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make/data/tzdata/VERSION

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@@ -21,4 +21,4 @@
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
24-
tzdata2025a
24+
tzdata2025b

make/data/tzdata/asia

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@@ -1523,6 +1523,16 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
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# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977).
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# UIT is the Operational Bulletin of International Telecommunication Union.
15251525

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# From Roozbeh Pournader (2025-03-18):
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# ... the exact time of Iran's transition from +0400 to +0330 ... was Friday
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# 1357/8/19 AP=1978-11-10. Here's a newspaper clip from the Ettela'at
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# newspaper, dated 1357/8/14 AP=1978-11-05, translated from Persian
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# (at https://w.wiki/DUEY):
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# Following the government's decision about returning the official time
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# to the previous status, the spokesperson for the Ministry of Energy
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# announced today: At the hour 24 of Friday 19th of Aban (=1978-11-10),
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# the country's time will be pulled back half an hour.
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#
15261536
# From Roozbeh Pournader (2003-03-15):
15271537
# This is an English translation of what I just found (originally in Persian).
15281538
# The Gregorian dates in brackets are mine:
@@ -1650,7 +1660,7 @@ Rule Iran 2021 2022 - Sep 21 24:00 0 -
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Zone Asia/Tehran 3:25:44 - LMT 1916
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3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time
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3:30 Iran %z 1977 Oct 20 24:00
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4:00 Iran %z 1979
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4:00 Iran %z 1978 Nov 10 24:00
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3:30 Iran %z
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make/data/tzdata/northamerica

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@@ -1634,6 +1634,15 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
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# For more on Orillia, see: Daubs K. Bold attempt at daylight saving
16351635
# time became a comic failure in Orillia. Toronto Star 2017-07-08.
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# https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html
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# From Paul Eggert (2025-03-20):
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# Also see the 1912-06-17 front page of The Evening Sunbeam,
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# reproduced in: Richardson M. "Daylight saving was a confusing
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# time in Orillia" in the 2025-03-15 Orillia Matters. Richardson writes,
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# "The first Sunday after the switch was made, [DST proponent and
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# Orillia mayor William Sword] Frost walked into church an hour late.
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# This became a symbol of the downfall of daylight saving in Orillia."
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# The mayor became known as "Daylight Bill".
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# https://www.orilliamatters.com/local-news/column-daylight-saving-was-a-confusing-time-in-orillia-10377529
16371646

16381647
# From Mark Brader (2010-03-06):
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#

make/data/tzdata/southamerica

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@@ -1,26 +1,3 @@
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#
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#
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# This code is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 only, as
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# published by the Free Software Foundation. Oracle designates this
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# particular file as subject to the "Classpath" exception as provided
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# by Oracle in the LICENSE file that accompanied this code.
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#
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# This code is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# version 2 for more details (a copy is included in the LICENSE file that
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# accompanied this code).
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#
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# You should have received a copy of the GNU General Public License version
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# 2 along with this work; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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# or visit www.oracle.com if you need additional information or have any
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# questions.
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#
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# tzdb data for South America and environs
252

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# This file is in the public domain, so clarified as of
@@ -1269,35 +1246,45 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
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# dates to 2014.
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# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC)
12711248
# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC)
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# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf
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# From Tim Parenti (2025-03-22):
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# Decreto 307 of 2014 of the Ministry of the Interior and Public Security,
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# promulgated 2014-01-30 and published 2014-02-19:
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# https://www.diariooficial.interior.gob.cl/media/2014/02/19/do-20140219.pdf#page=1
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# https://www.bcn.cl/leychile/navegar?idNorma=1059557
12731254

12741255
# From Eduardo Romero Urra (2015-03-03):
12751256
# Today has been published officially that Chile will use the DST time
12761257
# permanently until March 25 of 2017
1277-
# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
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#
1279-
# From Paul Eggert (2015-03-03):
1280-
# For now, assume that the extension will persist indefinitely.
1258+
# From Tim Parenti (2025-03-22):
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# Decreto 106 of 2015 of the Ministry of the Interior and Public Security,
1260+
# promulgated 2015-01-27 and published 2015-03-03:
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# https://www.diariooficial.interior.gob.cl/media/2015/03/03/do-20150303.pdf#page=1
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# https://www.bcn.cl/leychile/navegar?idNorma=1075157
12811263

12821264
# From Juan Correa (2016-03-18):
1283-
# The decree regarding DST has been published in today's Official Gazette:
1284-
# http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/
1285-
# http://www.leychile.cl/Navegar?idNorma=1088502
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# The decree regarding DST has been published in today's Official Gazette...
12861266
# It does consider the second Saturday of May and August as the dates
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# for the transition; and it lists DST dates until 2019, but I think
12881268
# this scheme will stick.
1289-
#
12901269
# From Paul Eggert (2016-03-18):
1291-
# For now, assume the pattern holds for the indefinite future.
12921270
# The decree says transitions occur at 24:00; in practice this appears
12931271
# to mean 24:00 mainland time, not 24:00 local time, so that Easter
12941272
# Island is always two hours behind the mainland.
1273+
# From Tim Parenti (2025-03-22):
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# Decreto 253 of 2016 of the Ministry of the Interior and Public Security,
1275+
# promulgated 2016-03-16 and published 2016-03-18.
1276+
# https://www.diariooficial.interior.gob.cl/media/2016/03/18/do-20160318.pdf#page=1
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# https://www.bcn.cl/leychile/navegar?idNorma=1088502
12951278

12961279
# From Juan Correa (2016-12-04):
12971280
# Magallanes region ... will keep DST (UTC -3) all year round....
12981281
# 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
1299-
# From Deborah Goldsmith (2017-01-19):
1300-
# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
1282+
# From Tim Parenti (2025-03-22), via Deborah Goldsmith (2017-01-19):
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# Decreto 1820 of 2016 of the Ministry of the Interior and Public Security,
1284+
# promulgated 2016-12-02 and published 2017-01-17:
1285+
# https://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
1286+
# https://www.bcn.cl/leychile/Navegar?idNorma=1099217
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# Model this as a change to standard offset effective 2016-12-04.
13011288

13021289
# From Juan Correa (2018-08-13):
13031290
# As of moments ago, the Ministry of Energy in Chile has announced the new
@@ -1316,13 +1303,20 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
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# https://twitter.com/MinEnergia/status/1029009354001973248
13171304
# "We will keep the new time policy unchanged for at least the next 4 years."
13181305
# So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
1319-
# From Juan Correa (2019-02-04):
1320-
# http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf
1306+
# From Tim Parenti (2025-03-22), via Juan Correa (2019-02-04):
1307+
# Decreto 1286 of 2018 of the Ministry of the Interior and Public Security,
1308+
# promulgated 2018-09-21 and published 2018-11-23:
1309+
# https://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf
1310+
# https://www.bcn.cl/leychile/Navegar?idNorma=1125760
13211311

13221312
# From Juan Correa (2022-04-02):
13231313
# I found there was a decree published last Thursday that will keep
1324-
# Magallanes region to UTC -3 "indefinitely". The decree is available at
1314+
# Magallanes region to UTC -3 "indefinitely".
1315+
# From Tim Parenti (2025-03-22):
1316+
# Decreto 143 of 2022 of the Ministry of the Interior and Public Security,
1317+
# promulgated 2022-03-29 and published 2022-03-31:
13251318
# https://www.diariooficial.interior.gob.cl/publicaciones/2022/03/31/43217-B/01/2108910.pdf
1319+
# https://www.bcn.cl/leychile/Navegar?idNorma=1174342
13261320

13271321
# From Juan Correa (2022-08-09):
13281322
# the Internal Affairs Ministry (Ministerio del Interior) informed DST
@@ -1331,13 +1325,36 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
13311325
# will keep UTC -3 "indefinitely"... This is because on September 4th
13321326
# we will have a voting whether to approve a new Constitution.
13331327
#
1334-
# From Eduardo Romero Urra (2022-08-17):
1328+
# From Tim Parenti (2025-03-22), via Eduardo Romero Urra (2022-08-17):
1329+
# Decreto 224 of 2022 of the Ministry of the Interior and Public Security,
1330+
# promulgated 2022-07-14 and published 2022-08-13:
13351331
# https://www.diariooficial.interior.gob.cl/publicaciones/2022/08/13/43327/01/2172567.pdf
1332+
# https://www.bcn.cl/leychile/navegar?idNorma=1179983
13361333
#
13371334
# From Paul Eggert (2022-08-17):
13381335
# Although the presidential decree stops at fall 2026, assume that
13391336
# similar DST rules will continue thereafter.
13401337

1338+
# From Paul Eggert (2025-01-15):
1339+
# Diario Regional Aysén's Sebastián Martel reports that 94% of Aysén
1340+
# citizens polled in November favored changing the rules from
1341+
# -04/-03-with-DST to -03 all year...
1342+
# https://www.diarioregionalaysen.cl/noticia/actualidad/2024/12/presentan-decision-que-gano-la-votacion-sobre-el-cambio-del-huso-horario-en-aysen
1343+
#
1344+
# From Yonathan Dossow (2025-03-20):
1345+
# [T]oday we have more confirmation of the change. [Aysén] region will keep
1346+
# UTC-3 all year...
1347+
# https://www.cnnchile.com/pais/region-de-aysen-mantendra-horario-de-verano-todo-el-ano_20250320/
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# https://www.latercera.com/nacional/noticia/tras-consulta-ciudadana-region-de-aysen-mantendra-el-horario-de-verano-durante-todo-el-ano/
1349+
# https://x.com/min_interior/status/1902692504270672098
1350+
#
1351+
# From Tim Parenti (2025-03-22), via Eduardo Romero Urra (2025-03-20):
1352+
# Decreto 93 of 2025 of the Ministry of the Interior and Public Security,
1353+
# promulgated 2025-03-11 and published 2025-03-20:
1354+
# https://www.diariooficial.interior.gob.cl/publicaciones/2025/03/20/44104/01/2624263.pdf
1355+
# https://www.bcn.cl/leychile/Navegar?idNorma=1211955
1356+
# Model this as a change to standard offset effective 2025-03-20.
1357+
13411358
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
13421359
Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
13431360
Rule Chile 1928 1932 - Apr 1 0:00 0 -
@@ -1394,6 +1411,20 @@ Zone America/Santiago -4:42:45 - LMT 1890
13941411
-5:00 1:00 %z 1947 Mar 31 24:00
13951412
-5:00 - %z 1947 May 21 23:00
13961413
-4:00 Chile %z
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Zone America/Coyhaique -4:48:16 - LMT 1890
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-4:42:45 - SMT 1910 Jan 10
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-5:00 - %z 1916 Jul 1
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-4:42:45 - SMT 1918 Sep 10
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-4:00 - %z 1919 Jul 1
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-4:42:45 - SMT 1927 Sep 1
1420+
-5:00 Chile %z 1932 Sep 1
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-4:00 - %z 1942 Jun 1
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-5:00 - %z 1942 Aug 1
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-4:00 - %z 1946 Aug 28 24:00
1424+
-5:00 1:00 %z 1947 Mar 31 24:00
1425+
-5:00 - %z 1947 May 21 23:00
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-4:00 Chile %z 2025 Mar 20
1427+
-3:00 - %z
13971428
Zone America/Punta_Arenas -4:43:40 - LMT 1890
13981429
-4:42:45 - SMT 1910 Jan 10
13991430
-5:00 - %z 1916 Jul 1

make/data/tzdata/zone.tab

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@@ -162,7 +162,8 @@ CH +4723+00832 Europe/Zurich
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CI +0519-00402 Africa/Abidjan
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CK -2114-15946 Pacific/Rarotonga
164164
CL -3327-07040 America/Santiago most of Chile
165-
CL -5309-07055 America/Punta_Arenas Region of Magallanes
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CL -4534-07204 America/Coyhaique Aysen Region
166+
CL -5309-07055 America/Punta_Arenas Magallanes Region
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CL -2709-10926 Pacific/Easter Easter Island
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CM +0403+00942 Africa/Douala
168169
CN +3114+12128 Asia/Shanghai Beijing Time
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tzdata2025a
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tzdata2025b

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