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

make/data/tzdata/southamerica

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@@ -1269,35 +1269,45 @@ 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)
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# 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
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12741278
# From Eduardo Romero Urra (2015-03-03):
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# Today has been published officially that Chile will use the DST time
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# permanently until March 25 of 2017
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# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
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#
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# From Paul Eggert (2015-03-03):
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# For now, assume that the extension will persist indefinitely.
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# From Tim Parenti (2025-03-22):
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# Decreto 106 of 2015 of the Ministry of the Interior and Public Security,
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# 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
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12821287
# From Juan Correa (2016-03-18):
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# The decree regarding DST has been published in today's Official Gazette:
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# http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/
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# http://www.leychile.cl/Navegar?idNorma=1088502
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# The decree regarding DST has been published in today's Official Gazette...
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# 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
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# this scheme will stick.
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#
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# From Paul Eggert (2016-03-18):
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# For now, assume the pattern holds for the indefinite future.
12921293
# The decree says transitions occur at 24:00; in practice this appears
12931294
# to mean 24:00 mainland time, not 24:00 local time, so that Easter
12941295
# Island is always two hours behind the mainland.
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# From Tim Parenti (2025-03-22):
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# Decreto 253 of 2016 of the Ministry of the Interior and Public Security,
1298+
# promulgated 2016-03-16 and published 2016-03-18.
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# 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
12951301

12961302
# From Juan Correa (2016-12-04):
12971303
# Magallanes region ... will keep DST (UTC -3) all year round....
12981304
# 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):
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# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
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# 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,
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# promulgated 2016-12-02 and published 2017-01-17:
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# https://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
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# https://www.bcn.cl/leychile/Navegar?idNorma=1099217
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# Model this as a change to standard offset effective 2016-12-04.
13011311

13021312
# From Juan Correa (2018-08-13):
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# As of moments ago, the Ministry of Energy in Chile has announced the new
@@ -1316,13 +1326,20 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
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# https://twitter.com/MinEnergia/status/1029009354001973248
13171327
# "We will keep the new time policy unchanged for at least the next 4 years."
13181328
# 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
1329+
# From Tim Parenti (2025-03-22), via Juan Correa (2019-02-04):
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# Decreto 1286 of 2018 of the Ministry of the Interior and Public Security,
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# promulgated 2018-09-21 and published 2018-11-23:
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# https://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf
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# https://www.bcn.cl/leychile/Navegar?idNorma=1125760
13211334

13221335
# From Juan Correa (2022-04-02):
13231336
# I found there was a decree published last Thursday that will keep
1324-
# Magallanes region to UTC -3 "indefinitely". The decree is available at
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# Magallanes region to UTC -3 "indefinitely".
1338+
# From Tim Parenti (2025-03-22):
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# Decreto 143 of 2022 of the Ministry of the Interior and Public Security,
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# promulgated 2022-03-29 and published 2022-03-31:
13251341
# https://www.diariooficial.interior.gob.cl/publicaciones/2022/03/31/43217-B/01/2108910.pdf
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# https://www.bcn.cl/leychile/Navegar?idNorma=1174342
13261343

13271344
# From Juan Correa (2022-08-09):
13281345
# the Internal Affairs Ministry (Ministerio del Interior) informed DST
@@ -1331,13 +1348,36 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
13311348
# will keep UTC -3 "indefinitely"... This is because on September 4th
13321349
# we will have a voting whether to approve a new Constitution.
13331350
#
1334-
# From Eduardo Romero Urra (2022-08-17):
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# From Tim Parenti (2025-03-22), via Eduardo Romero Urra (2022-08-17):
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# Decreto 224 of 2022 of the Ministry of the Interior and Public Security,
1353+
# promulgated 2022-07-14 and published 2022-08-13:
13351354
# https://www.diariooficial.interior.gob.cl/publicaciones/2022/08/13/43327/01/2172567.pdf
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# https://www.bcn.cl/leychile/navegar?idNorma=1179983
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#
13371357
# From Paul Eggert (2022-08-17):
13381358
# Although the presidential decree stops at fall 2026, assume that
13391359
# similar DST rules will continue thereafter.
13401360

1361+
# From Paul Eggert (2025-01-15):
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# Diario Regional Aysén's Sebastián Martel reports that 94% of Aysén
1363+
# citizens polled in November favored changing the rules from
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# -04/-03-with-DST to -03 all year...
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# https://www.diarioregionalaysen.cl/noticia/actualidad/2024/12/presentan-decision-que-gano-la-votacion-sobre-el-cambio-del-huso-horario-en-aysen
1366+
#
1367+
# From Yonathan Dossow (2025-03-20):
1368+
# [T]oday we have more confirmation of the change. [Aysén] region will keep
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# UTC-3 all year...
1370+
# 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/
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# https://x.com/min_interior/status/1902692504270672098
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#
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# From Tim Parenti (2025-03-22), via Eduardo Romero Urra (2025-03-20):
1375+
# Decreto 93 of 2025 of the Ministry of the Interior and Public Security,
1376+
# promulgated 2025-03-11 and published 2025-03-20:
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# https://www.diariooficial.interior.gob.cl/publicaciones/2025/03/20/44104/01/2624263.pdf
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# https://www.bcn.cl/leychile/Navegar?idNorma=1211955
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# Model this as a change to standard offset effective 2025-03-20.
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13411381
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
13421382
Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
13431383
Rule Chile 1928 1932 - Apr 1 0:00 0 -
@@ -1394,6 +1434,20 @@ Zone America/Santiago -4:42:45 - LMT 1890
13941434
-5:00 1:00 %z 1947 Mar 31 24:00
13951435
-5:00 - %z 1947 May 21 23:00
13961436
-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
1443+
-5:00 Chile %z 1932 Sep 1
1444+
-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
1447+
-5:00 1:00 %z 1947 Mar 31 24:00
1448+
-5:00 - %z 1947 May 21 23:00
1449+
-4:00 Chile %z 2025 Mar 20
1450+
-3:00 - %z
13971451
Zone America/Punta_Arenas -4:43:40 - LMT 1890
13981452
-4:42:45 - SMT 1910 Jan 10
13991453
-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
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CL -3327-07040 America/Santiago most of Chile
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CL -5309-07055 America/Punta_Arenas Region of Magallanes
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CL -4534-07204 America/Coyhaique Aysen Region
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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
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CN +3114+12128 Asia/Shanghai Beijing Time
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tzdata2025a
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tzdata2025b

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