402 # or (some English translation):
403 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
404
405 # From Mariano Absatz (2010-04-12):
406 # yes...I can confirm this...and given that San Luis keeps calling
407 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
408 # rules...San Luis is still using "Western ARgentina Time" and it got
409 # stuck on Summer daylight savings time even though the summer is over.
410
411 # From Paul Eggert (2018-01-23):
412 # Perhaps San Luis operates on the legal fiction that it is at -04
413 # with perpetual daylight saving time, but ordinary usage typically seems to
414 # just say it's at -03; see, for example,
415 # https://es.wikipedia.org/wiki/Hora_oficial_argentina
416 # We've documented similar situations as being plain changes to
417 # standard time, so let's do that here too. This does not change UTC
418 # offsets, only tm_isdst and the time zone abbreviations. One minor
419 # plus is that this silences a zic complaint that there's no POSIX TZ
420 # setting for timestamps past 2038.
421
422 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
423 #
424 # Buenos Aires (BA), Capital Federal (CF),
425 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
426 -4:16:48 - CMT 1920 May # Córdoba Mean Time
427 -4:00 - -04 1930 Dec
428 -4:00 Arg -04/-03 1969 Oct 5
429 -3:00 Arg -03/-02 1999 Oct 3
430 -4:00 Arg -04/-03 2000 Mar 3
431 -3:00 Arg -03/-02
432 #
433 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
434 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
435 #
436 # Shanks & Pottenger also make the following claims, which we haven't verified:
437 # - Formosa switched to -3:00 on 1991-01-07.
438 # - Misiones switched to -3:00 on 1990-12-29.
439 # - Chaco switched to -3:00 on 1991-01-04.
440 # - Santiago del Estero switched to -4:00 on 1991-04-01,
441 # then to -3:00 on 1991-04-26.
442 #
583 -4:00 - -04 2004 Jun 20
584 -3:00 Arg -03/-02 2008 Oct 18
585 -3:00 - -03
586 #
587 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
588 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
589 -4:16:48 - CMT 1920 May
590 -4:00 - -04 1930 Dec
591 -4:00 Arg -04/-03 1969 Oct 5
592 -3:00 Arg -03/-02 1999 Oct 3
593 -4:00 Arg -04/-03 2000 Mar 3
594 -3:00 - -03 2004 May 30
595 -4:00 - -04 2004 Jun 20
596 -3:00 Arg -03/-02 2008 Oct 18
597 -3:00 - -03
598
599 # Aruba
600 Link America/Curacao America/Aruba
601
602 # Bolivia
603 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
604 Zone America/La_Paz -4:32:36 - LMT 1890
605 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
606 -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST
607 -4:00 - -04
608
609 # Brazil
610
611 # From Paul Eggert (1993-11-18):
612 # The mayor of Rio recently attempted to change the time zone rules
613 # just in his city, in order to leave more summer time for the tourist trade.
614 # The rule change lasted only part of the day;
615 # the federal government refused to follow the city's rules, and business
616 # was in a chaos, so the mayor backed down that afternoon.
617
618 # From IATA SSIM (1996-02):
619 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
620 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
621 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
622 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
623 # [The last three states are new to this issue of the IATA SSIM.]
926 # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
927 # adopted by the same states as before.
928 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 -
929 # From Frederico A. C. Neves (2008-09-10):
930 # According to this decree
931 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
932 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
933 # 3rd Feb Sunday. There is an exception on the return date when this is
934 # the Carnival Sunday then the return date will be the next Sunday...
935 Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 -
936 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
937 # Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13)
938 # added Bahia.
939 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
940 # Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15)
941 # removed Bahia and added Tocantins.
942 # Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30)
943 # removed Tocantins.
944 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
945 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
946 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
947 # From Steffen Thorsen (2017-12-18):
948 # According to many media sources, next year's DST start in Brazil will move to
949 # the first Sunday of November, and it will stay like that for the years after.
950 # ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html
951 # From Steffen Thorsen (2017-12-20):
952 # http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm
953 #
954 # From Fábio Gomes (2018-10-04):
955 # The Brazilian president just announced a new change on this year DST.
956 # It was scheduled to start on November 4th and it was changed to November 18th.
957 # From Rodrigo Brüning Wessler (2018-10-15):
958 # The Brazilian government just announced that the change in DST was
959 # canceled.... Maybe the president Michel Temer also woke up one hour
960 # earlier today. :)
961 Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 -
962 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
963 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
964 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
965 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
966 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
967 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
968 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
969 # From Arthur David Olson (2008-09-29):
970 # The next is wrong in some years but is better than nothing.
971 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
972
973 # The latest ruleset listed above says that the following states observe DST:
974 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
975
976 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
977 #
978 # Fernando de Noronha (administratively part of PE)
979 Zone America/Noronha -2:09:40 - LMT 1914
980 -2:00 Brazil -02/-01 1990 Sep 17
981 -2:00 - -02 1999 Sep 30
982 -2:00 Brazil -02/-01 2000 Oct 15
983 -2:00 - -02 2001 Sep 13
984 -2:00 Brazil -02/-01 2002 Oct 1
985 -2:00 - -02
986 # Other Atlantic islands have no permanent settlement.
987 # These include Trindade and Martim Vaz (administratively part of ES),
988 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
989 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
990 # it also included the Penedos.
991 #
992 # Amapá (AP), east Pará (PA)
993 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
994 # The division between east and west Pará is the river Xingu.
995 # In the north a very small part from the river Javary (now Jari I guess,
996 # the border with Amapá) to the Amazon, then to the Xingu.
1264 # they will switch from -03 to -04 one hour after Santiago does that day.
1265 # For now, assume that they will not revert.
1266
1267 # From Juan Correa (2018-08-13):
1268 # As of moments ago, the Ministry of Energy in Chile has announced the new
1269 # schema for DST. ... Announcement in video (in Spanish):
1270 # https://twitter.com/MinEnergia/status/1029000399129374720
1271 # From Yonathan Dossow (2018-08-13):
1272 # The video says "first Saturday of September", we all know it means Sunday at
1273 # midnight.
1274 # From Tim Parenti (2018-08-13):
1275 # Translating the captions on the video at 0:44-0:55, "We want to announce as
1276 # Government that from 2019, Winter Time will be increased to 5 months, between
1277 # the first Saturday of April and the first Saturday of September."
1278 # At 2:08-2:20, "The Magallanes region will maintain its current time, as
1279 # decided by the citizens during 2017, but our Government will promote a
1280 # regional dialogue table to gather their opinion on this matter."
1281 # https://twitter.com/MinEnergia/status/1029009354001973248
1282 # "We will keep the new time policy unchanged for at least the next 4 years."
1283 # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
1284
1285 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1286 Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
1287 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1288 Rule Chile 1968 only - Nov 3 4:00u 1:00 -
1289 Rule Chile 1969 only - Mar 30 3:00u 0 -
1290 Rule Chile 1969 only - Nov 23 4:00u 1:00 -
1291 Rule Chile 1970 only - Mar 29 3:00u 0 -
1292 Rule Chile 1971 only - Mar 14 3:00u 0 -
1293 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 -
1294 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1295 Rule Chile 1973 only - Sep 30 4:00u 1:00 -
1296 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 -
1297 Rule Chile 1987 only - Apr 12 3:00u 0 -
1298 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1299 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 -
1300 Rule Chile 1990 only - Sep 16 4:00u 1:00 -
1301 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1302 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 -
1303 Rule Chile 1997 only - Mar 30 3:00u 0 -
1304 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1305 Rule Chile 1998 only - Sep 27 4:00u 1:00 -
1306 Rule Chile 1999 only - Apr 4 3:00u 0 -
1307 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 -
1308 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1309 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1310 # which is used below in specifying the transition.
1311 Rule Chile 2008 only - Mar 30 3:00u 0 -
1312 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1313 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1314 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1315 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 -
1316 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 -
1317 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 -
1318 Rule Chile 2016 2018 - May Sun>=9 3:00u 0 -
1319 Rule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 -
1320 Rule Chile 2019 max - Apr Sun>=2 3:00u 0 -
1321 Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 -
1322 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1323 # (1996-09) says 1998-03-08. Ignore these.
1324 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1325 Zone America/Santiago -4:42:46 - LMT 1890
1326 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1327 -5:00 - -05 1916 Jul 1
1328 -4:42:46 - SMT 1918 Sep 10
1329 -4:00 - -04 1919 Jul 1
1330 -4:42:46 - SMT 1927 Sep 1
1331 -5:00 Chile -05/-04 1932 Sep 1
1332 -4:00 - -04 1942 Jun 1
1333 -5:00 - -05 1942 Aug 1
1334 -4:00 - -04 1946 Jul 15
1335 -4:00 1:00 -03 1946 Sep 1 # central Chile
1336 -4:00 - -04 1947 Apr 1
1337 -5:00 - -05 1947 May 21 23:00
1338 -4:00 Chile -04/-03
1339 Zone America/Punta_Arenas -4:43:40 - LMT 1890
1340 -4:42:46 - SMT 1910 Jan 10
1341 -5:00 - -05 1916 Jul 1
1342 -4:42:46 - SMT 1918 Sep 10
1343 -4:00 - -04 1919 Jul 1
1344 -4:42:46 - SMT 1927 Sep 1
1353 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1354 -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time
1355 -6:00 Chile -06/-05
1356 #
1357 # Salas y Gómez Island is uninhabited.
1358 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1359 # and Antarctic bases, are like America/Santiago.
1360
1361 # Antarctic base using South American rules
1362 # (See the file 'antarctica' for more.)
1363 #
1364 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1365 #
1366 # From Ethan Dicks (1996-10-06):
1367 # It keeps the same time as Punta Arenas, Chile, because, just like us
1368 # and the South Pole, that's the other end of their supply line....
1369 # I verified with someone who was there that since 1980,
1370 # Palmer has followed Chile. Prior to that, before the Falklands War,
1371 # Palmer used to be supplied from Argentina.
1372 #
1373 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1374 Zone Antarctica/Palmer 0 - -00 1965
1375 -4:00 Arg -04/-03 1969 Oct 5
1376 -3:00 Arg -03/-02 1982 May
1377 -4:00 Chile -04/-03 2016 Dec 4
1378 -3:00 - -03
1379
1380 # Colombia
1381
1382 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1383 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1384
1385 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1386 Rule CO 1992 only - May 3 0:00 1:00 -
1387 Rule CO 1993 only - Apr 4 0:00 0 -
1388 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1389 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1390 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1391 -5:00 CO -05/-04
1392 # Malpelo, Providencia, San Andres
1393 # no information; probably like America/Bogota
1394
1395 # Curaçao
1396
1397 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1398 #
1399 # From Paul Eggert (2006-03-22):
1400 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1401 # -4:00 since standard time was introduced on 1912-03-02; and that
1402 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1403 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1404 # Saba Island has been like Curaçao.
1405 # This all predates our 1970 cutoff, though.
1406 #
1407 # By July 2007 Curaçao and St Maarten are planned to become
1408 # associated states within the Netherlands, much like Aruba;
1409 # Bonaire, Saba and St Eustatius would become directly part of the
1410 # Netherlands as Kingdom Islands. This won't affect their time zones
1411 # though, as far as we know.
1412 #
1413 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1414 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1415 -4:30 - -0430 1965
1416 -4:00 - AST
1417
1418 # From Arthur David Olson (2011-06-15):
1419 # use links for places with new iso3166 codes.
1420 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1421 # and contains an apostrophe; use "Lower_Princes" below.
1422
1423 Link America/Curacao America/Lower_Princes # Sint Maarten
1424 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1425
1426 # Ecuador
1427 #
1428 # Milne says the Central and South American Telegraph Company used -5:24:15.
1429 #
1430 # From Alois Treindl (2016-12-15):
1431 # https://www.elcomercio.com/actualidad/hora-sixto-1993.html
1432 # ... Whether the law applied also to Galápagos, I do not know.
1433 # From Paul Eggert (2016-12-15):
1434 # https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
1435 # This says President Sixto Durán Ballén signed decree No. 285, which
1436 # established DST from 1992-11-28 to 1993-02-05; it does not give transition
1437 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did
1438 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
1439 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
1440 # sol" ("It was dawning in the middle of the night, the buses went to class
1441 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
1442 # (Not one step back), the clocks went back in 1993 and the experiment was not
1443 # repeated. For now, assume transitions were at 00:00 local time country-wide.
1444 #
1445 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1446 Rule Ecuador 1992 only - Nov 28 0:00 1:00 -
1447 Rule Ecuador 1993 only - Feb 5 0:00 0 -
1448 #
1449 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1450 Zone America/Guayaquil -5:19:20 - LMT 1890
1451 -5:14:00 - QMT 1931 # Quito Mean Time
1452 -5:00 Ecuador -05/-04
1453 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1454 -5:00 - -05 1986
1455 -6:00 Ecuador -06/-05
1456
1457 # Falklands
1458
1459 # From Paul Eggert (2006-03-22):
1460 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1461 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1462
1463 # From Falkland Islands Government Office, London (2001-01-22)
1464 # via Jesper Nørgaard:
1465 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1466 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1467 # September. It is anticipated that the clocks will revert back at 2
1468 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1469 # Sunday 1 September.
1532 # summer time on a trial basis only. FIG need to contact IANA and/or
1533 # the maintainers of the database to inform them we're adopting
1534 # the same policy this year and suggest recommendations for future years.
1535 #
1536 # For now we will assume permanent -03 for the Falklands
1537 # until advised differently (to apply for 2012 and beyond, after the 2011
1538 # experiment was apparently successful.)
1539 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1540 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 -
1541 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
1542 Rule Falk 1939 only - Oct 1 0:00 1:00 -
1543 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 -
1544 Rule Falk 1943 only - Jan 1 0:00 0 -
1545 Rule Falk 1983 only - Sep lastSun 0:00 1:00 -
1546 Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
1547 Rule Falk 1984 only - Sep 16 0:00 1:00 -
1548 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 -
1549 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
1550 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
1551 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 -
1552 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1553 Zone Atlantic/Stanley -3:51:24 - LMT 1890
1554 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
1555 -4:00 Falk -04/-03 1983 May
1556 -3:00 Falk -03/-02 1985 Sep 15
1557 -4:00 Falk -04/-03 2010 Sep 5 2:00
1558 -3:00 - -03
1559
1560 # French Guiana
1561 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1562 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1563 -4:00 - -04 1967 Oct
1564 -3:00 - -03
1565
1566 # Guyana
1567 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1568 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1569 -3:45 - -0345 1975 Jul 31
1570 -3:00 - -03 1991
1571 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1572 -4:00 - -04
1573
1574 # Paraguay
1575 #
1576 # From Paul Eggert (2006-03-22):
1577 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1578 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1579 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1580 #
1581 # From Waldemar Villamayor-Venialbo (2013-09-20):
1582 # No time of the day is established for the adjustment, so people normally
1583 # adjust their clocks at 0 hour of the given dates.
1584 #
1585 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1586 Rule Para 1975 1988 - Oct 1 0:00 1:00 -
1587 Rule Para 1975 1978 - Mar 1 0:00 0 -
1641 # Art. 1. It is hereby established that from the second Sunday of the month of
1642 # April of this year (2010), the official time is to be set back 60 minutes,
1643 # and that on the first Sunday of the month of October, it is to be set
1644 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1645 # ...
1646 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 -
1647 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1648 #
1649 # From Steffen Thorsen (2013-03-07):
1650 # Paraguay will end DST on 2013-03-24 00:00....
1651 # http://www.ande.gov.py/interna.php?id=1075
1652 #
1653 # From Carlos Raúl Perasso (2013-03-15):
1654 # The change in Paraguay is now final. Decree number 10780
1655 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1656 # From Carlos Raúl Perasso (2014-02-28):
1657 # Decree 1264 can be found at:
1658 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1659 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1660
1661 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1662 Zone America/Asuncion -3:50:40 - LMT 1890
1663 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1664 -4:00 - -04 1972 Oct
1665 -3:00 - -03 1974 Apr
1666 -4:00 Para -04/-03
1667
1668 # Peru
1669 #
1670 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1671 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1672 # When we were in Peru in 1985-1986, they apparently switched over
1673 # sometime between December 29 and January 3 while we were on the Amazon.
1674 #
1675 # From Paul Eggert (2006-03-22):
1676 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1677
1678 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1679 Rule Peru 1938 only - Jan 1 0:00 1:00 -
1680 Rule Peru 1938 only - Apr 1 0:00 0 -
1681 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 -
1682 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1683 Rule Peru 1986 1987 - Jan 1 0:00 1:00 -
1684 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1685 Rule Peru 1990 only - Jan 1 0:00 1:00 -
1686 Rule Peru 1990 only - Apr 1 0:00 0 -
1687 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1688 Rule Peru 1994 only - Jan 1 0:00 1:00 -
1689 Rule Peru 1994 only - Apr 1 0:00 0 -
1690 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1691 Zone America/Lima -5:08:12 - LMT 1890
1692 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
1693 -5:00 Peru -05/-04
1694
1695 # South Georgia
1696 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1697 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
1698 -2:00 - -02
1699
1700 # South Sandwich Is
1701 # uninhabited; scientific personnel have wintered
1702
1703 # Suriname
1704 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1705 Zone America/Paramaribo -3:40:40 - LMT 1911
1706 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1707 -3:40:36 - PMT 1945 Oct # The capital moved?
1708 -3:30 - -0330 1984 Oct
1709 -3:00 - -03
1710
1711 # Trinidad and Tobago
1712 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1713 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1714 -4:00 - AST
1715
1716 # These all agree with Trinidad and Tobago since 1970.
1717 Link America/Port_of_Spain America/Anguilla
1718 Link America/Port_of_Spain America/Antigua
1719 Link America/Port_of_Spain America/Dominica
1720 Link America/Port_of_Spain America/Grenada
1721 Link America/Port_of_Spain America/Guadeloupe
1722 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1723 Link America/Port_of_Spain America/Montserrat
1724 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1725 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1726 Link America/Port_of_Spain America/St_Lucia
1727 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1728 Link America/Port_of_Spain America/St_Vincent
1729 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1730
1731 # Uruguay
1732 # From Paul Eggert (1993-11-18):
1963 # published today in the "Gaceta Oficial de la República Bolivariana
1964 # de Venezuela, número 38.819" (official document for all laws or
1965 # resolution publication)
1966 # http://www.globovision.com/news.php?nid=72208
1967
1968 # From Alexander Krivenyshev (2016-04-15):
1969 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1970 #
1971 # From Paul Eggert (2016-04-15):
1972 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1973 # "'Venezuela's new time-zone: hours without light, hours without water,
1974 # hours of presidential broadcasts, hours of lines,' quipped comedian
1975 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1976 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1977 # https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1978 #
1979 # From Matt Johnson (2016-04-20):
1980 # ... published in the official Gazette [2016-04-18], here:
1981 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1982
1983 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1984 Zone America/Caracas -4:27:44 - LMT 1890
1985 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1986 -4:30 - -0430 1965 Jan 1 0:00
1987 -4:00 - -04 2007 Dec 9 3:00
1988 -4:30 - -0430 2016 May 1 2:30
1989 -4:00 - -04
|
402 # or (some English translation):
403 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
404
405 # From Mariano Absatz (2010-04-12):
406 # yes...I can confirm this...and given that San Luis keeps calling
407 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
408 # rules...San Luis is still using "Western ARgentina Time" and it got
409 # stuck on Summer daylight savings time even though the summer is over.
410
411 # From Paul Eggert (2018-01-23):
412 # Perhaps San Luis operates on the legal fiction that it is at -04
413 # with perpetual daylight saving time, but ordinary usage typically seems to
414 # just say it's at -03; see, for example,
415 # https://es.wikipedia.org/wiki/Hora_oficial_argentina
416 # We've documented similar situations as being plain changes to
417 # standard time, so let's do that here too. This does not change UTC
418 # offsets, only tm_isdst and the time zone abbreviations. One minor
419 # plus is that this silences a zic complaint that there's no POSIX TZ
420 # setting for timestamps past 2038.
421
422 # Zone NAME STDOFF RULES FORMAT [UNTIL]
423 #
424 # Buenos Aires (BA), Capital Federal (CF),
425 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
426 -4:16:48 - CMT 1920 May # Córdoba Mean Time
427 -4:00 - -04 1930 Dec
428 -4:00 Arg -04/-03 1969 Oct 5
429 -3:00 Arg -03/-02 1999 Oct 3
430 -4:00 Arg -04/-03 2000 Mar 3
431 -3:00 Arg -03/-02
432 #
433 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
434 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
435 #
436 # Shanks & Pottenger also make the following claims, which we haven't verified:
437 # - Formosa switched to -3:00 on 1991-01-07.
438 # - Misiones switched to -3:00 on 1990-12-29.
439 # - Chaco switched to -3:00 on 1991-01-04.
440 # - Santiago del Estero switched to -4:00 on 1991-04-01,
441 # then to -3:00 on 1991-04-26.
442 #
583 -4:00 - -04 2004 Jun 20
584 -3:00 Arg -03/-02 2008 Oct 18
585 -3:00 - -03
586 #
587 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
588 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
589 -4:16:48 - CMT 1920 May
590 -4:00 - -04 1930 Dec
591 -4:00 Arg -04/-03 1969 Oct 5
592 -3:00 Arg -03/-02 1999 Oct 3
593 -4:00 Arg -04/-03 2000 Mar 3
594 -3:00 - -03 2004 May 30
595 -4:00 - -04 2004 Jun 20
596 -3:00 Arg -03/-02 2008 Oct 18
597 -3:00 - -03
598
599 # Aruba
600 Link America/Curacao America/Aruba
601
602 # Bolivia
603 # Zone NAME STDOFF RULES FORMAT [UNTIL]
604 Zone America/La_Paz -4:32:36 - LMT 1890
605 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
606 -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST
607 -4:00 - -04
608
609 # Brazil
610
611 # From Paul Eggert (1993-11-18):
612 # The mayor of Rio recently attempted to change the time zone rules
613 # just in his city, in order to leave more summer time for the tourist trade.
614 # The rule change lasted only part of the day;
615 # the federal government refused to follow the city's rules, and business
616 # was in a chaos, so the mayor backed down that afternoon.
617
618 # From IATA SSIM (1996-02):
619 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
620 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
621 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
622 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
623 # [The last three states are new to this issue of the IATA SSIM.]
926 # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),
927 # adopted by the same states as before.
928 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 -
929 # From Frederico A. C. Neves (2008-09-10):
930 # According to this decree
931 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm
932 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
933 # 3rd Feb Sunday. There is an exception on the return date when this is
934 # the Carnival Sunday then the return date will be the next Sunday...
935 Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 -
936 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
937 # Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13)
938 # added Bahia.
939 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
940 # Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15)
941 # removed Bahia and added Tocantins.
942 # Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30)
943 # removed Tocantins.
944 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -
945 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
946 Rule Brazil 2016 2019 - Feb Sun>=15 0:00 0 -
947 # From Steffen Thorsen (2017-12-18):
948 # According to many media sources, next year's DST start in Brazil will move to
949 # the first Sunday of November
950 # ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html
951 # From Steffen Thorsen (2017-12-20):
952 # http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm
953 # From Fábio Gomes (2018-10-04):
954 # The Brazilian president just announced a new change on this year DST.
955 # It was scheduled to start on November 4th and it was changed to November 18th.
956 # From Rodrigo Brüning Wessler (2018-10-15):
957 # The Brazilian government just announced that the change in DST was
958 # canceled.... Maybe the president Michel Temer also woke up one hour
959 # earlier today. :)
960 Rule Brazil 2018 only - Nov Sun>=1 0:00 1:00 -
961 # The last ruleset listed above says that the following states observed DST:
962 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
963 #
964 # From Steffen Thorsen (2019-04-05):
965 # According to multiple sources the Brazilian president wants to get rid of DST.
966 # https://gmconline.com.br/noticias/politica/bolsonaro-horario-de-verao-deve-acabar-este-ano
967 # https://g1.globo.com/economia/noticia/2019/04/05/governo-anuncia-fim-do-horario-de-verao.ghtml
968 # From Marcus Diniz (2019-04-25):
969 # Brazil no longer has DST changes - decree signed today
970 # https://g1.globo.com/politica/noticia/2019/04/25/bolsonaro-assina-decreto-que-acaba-com-o-horario-de-verao.ghtml
971 # From Daniel Soares de Oliveira (2019-04-26):
972 # http://www.planalto.gov.br/ccivil_03/_Ato2019-2022/2019/Decreto/D9772.htm
973
974 # Zone NAME STDOFF RULES FORMAT [UNTIL]
975 #
976 # Fernando de Noronha (administratively part of PE)
977 Zone America/Noronha -2:09:40 - LMT 1914
978 -2:00 Brazil -02/-01 1990 Sep 17
979 -2:00 - -02 1999 Sep 30
980 -2:00 Brazil -02/-01 2000 Oct 15
981 -2:00 - -02 2001 Sep 13
982 -2:00 Brazil -02/-01 2002 Oct 1
983 -2:00 - -02
984 # Other Atlantic islands have no permanent settlement.
985 # These include Trindade and Martim Vaz (administratively part of ES),
986 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
987 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
988 # it also included the Penedos.
989 #
990 # Amapá (AP), east Pará (PA)
991 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
992 # The division between east and west Pará is the river Xingu.
993 # In the north a very small part from the river Javary (now Jari I guess,
994 # the border with Amapá) to the Amazon, then to the Xingu.
1262 # they will switch from -03 to -04 one hour after Santiago does that day.
1263 # For now, assume that they will not revert.
1264
1265 # From Juan Correa (2018-08-13):
1266 # As of moments ago, the Ministry of Energy in Chile has announced the new
1267 # schema for DST. ... Announcement in video (in Spanish):
1268 # https://twitter.com/MinEnergia/status/1029000399129374720
1269 # From Yonathan Dossow (2018-08-13):
1270 # The video says "first Saturday of September", we all know it means Sunday at
1271 # midnight.
1272 # From Tim Parenti (2018-08-13):
1273 # Translating the captions on the video at 0:44-0:55, "We want to announce as
1274 # Government that from 2019, Winter Time will be increased to 5 months, between
1275 # the first Saturday of April and the first Saturday of September."
1276 # At 2:08-2:20, "The Magallanes region will maintain its current time, as
1277 # decided by the citizens during 2017, but our Government will promote a
1278 # regional dialogue table to gather their opinion on this matter."
1279 # https://twitter.com/MinEnergia/status/1029009354001973248
1280 # "We will keep the new time policy unchanged for at least the next 4 years."
1281 # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
1282 # From Juan Correa (2019-02-04):
1283 # http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf
1284
1285 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1286 Rule Chile 1927 1931 - Sep 1 0:00 1:00 -
1287 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1288 Rule Chile 1968 only - Nov 3 4:00u 1:00 -
1289 Rule Chile 1969 only - Mar 30 3:00u 0 -
1290 Rule Chile 1969 only - Nov 23 4:00u 1:00 -
1291 Rule Chile 1970 only - Mar 29 3:00u 0 -
1292 Rule Chile 1971 only - Mar 14 3:00u 0 -
1293 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 -
1294 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1295 Rule Chile 1973 only - Sep 30 4:00u 1:00 -
1296 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 -
1297 Rule Chile 1987 only - Apr 12 3:00u 0 -
1298 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1299 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 -
1300 Rule Chile 1990 only - Sep 16 4:00u 1:00 -
1301 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1302 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 -
1303 Rule Chile 1997 only - Mar 30 3:00u 0 -
1304 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1305 Rule Chile 1998 only - Sep 27 4:00u 1:00 -
1306 Rule Chile 1999 only - Apr 4 3:00u 0 -
1307 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 -
1308 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1309 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1310 # which is used below in specifying the transition.
1311 Rule Chile 2008 only - Mar 30 3:00u 0 -
1312 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1313 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1314 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1315 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 -
1316 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 -
1317 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 -
1318 Rule Chile 2016 2018 - May Sun>=9 3:00u 0 -
1319 Rule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 -
1320 Rule Chile 2019 max - Apr Sun>=2 3:00u 0 -
1321 Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 -
1322 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1323 # (1996-09) says 1998-03-08. Ignore these.
1324 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1325 Zone America/Santiago -4:42:46 - LMT 1890
1326 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1327 -5:00 - -05 1916 Jul 1
1328 -4:42:46 - SMT 1918 Sep 10
1329 -4:00 - -04 1919 Jul 1
1330 -4:42:46 - SMT 1927 Sep 1
1331 -5:00 Chile -05/-04 1932 Sep 1
1332 -4:00 - -04 1942 Jun 1
1333 -5:00 - -05 1942 Aug 1
1334 -4:00 - -04 1946 Jul 15
1335 -4:00 1:00 -03 1946 Sep 1 # central Chile
1336 -4:00 - -04 1947 Apr 1
1337 -5:00 - -05 1947 May 21 23:00
1338 -4:00 Chile -04/-03
1339 Zone America/Punta_Arenas -4:43:40 - LMT 1890
1340 -4:42:46 - SMT 1910 Jan 10
1341 -5:00 - -05 1916 Jul 1
1342 -4:42:46 - SMT 1918 Sep 10
1343 -4:00 - -04 1919 Jul 1
1344 -4:42:46 - SMT 1927 Sep 1
1353 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1354 -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time
1355 -6:00 Chile -06/-05
1356 #
1357 # Salas y Gómez Island is uninhabited.
1358 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1359 # and Antarctic bases, are like America/Santiago.
1360
1361 # Antarctic base using South American rules
1362 # (See the file 'antarctica' for more.)
1363 #
1364 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1365 #
1366 # From Ethan Dicks (1996-10-06):
1367 # It keeps the same time as Punta Arenas, Chile, because, just like us
1368 # and the South Pole, that's the other end of their supply line....
1369 # I verified with someone who was there that since 1980,
1370 # Palmer has followed Chile. Prior to that, before the Falklands War,
1371 # Palmer used to be supplied from Argentina.
1372 #
1373 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1374 Zone Antarctica/Palmer 0 - -00 1965
1375 -4:00 Arg -04/-03 1969 Oct 5
1376 -3:00 Arg -03/-02 1982 May
1377 -4:00 Chile -04/-03 2016 Dec 4
1378 -3:00 - -03
1379
1380 # Colombia
1381
1382 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1383 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1384
1385 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1386 Rule CO 1992 only - May 3 0:00 1:00 -
1387 Rule CO 1993 only - Apr 4 0:00 0 -
1388 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1389 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1390 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1391 -5:00 CO -05/-04
1392 # Malpelo, Providencia, San Andres
1393 # no information; probably like America/Bogota
1394
1395 # Curaçao
1396
1397 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1398 #
1399 # From Paul Eggert (2006-03-22):
1400 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1401 # -4:00 since standard time was introduced on 1912-03-02; and that
1402 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1403 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1404 # Saba Island has been like Curaçao.
1405 # This all predates our 1970 cutoff, though.
1406 #
1407 # By July 2007 Curaçao and St Maarten are planned to become
1408 # associated states within the Netherlands, much like Aruba;
1409 # Bonaire, Saba and St Eustatius would become directly part of the
1410 # Netherlands as Kingdom Islands. This won't affect their time zones
1411 # though, as far as we know.
1412 #
1413 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1414 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1415 -4:30 - -0430 1965
1416 -4:00 - AST
1417
1418 # From Arthur David Olson (2011-06-15):
1419 # use links for places with new iso3166 codes.
1420 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1421 # and contains an apostrophe; use "Lower_Princes" below.
1422
1423 Link America/Curacao America/Lower_Princes # Sint Maarten
1424 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1425
1426 # Ecuador
1427 #
1428 # Milne says the Central and South American Telegraph Company used -5:24:15.
1429 #
1430 # From Alois Treindl (2016-12-15):
1431 # https://www.elcomercio.com/actualidad/hora-sixto-1993.html
1432 # ... Whether the law applied also to Galápagos, I do not know.
1433 # From Paul Eggert (2016-12-15):
1434 # https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
1435 # This says President Sixto Durán Ballén signed decree No. 285, which
1436 # established DST from 1992-11-28 to 1993-02-05; it does not give transition
1437 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did
1438 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
1439 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
1440 # sol" ("It was dawning in the middle of the night, the buses went to class
1441 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
1442 # (Not one step back), the clocks went back in 1993 and the experiment was not
1443 # repeated. For now, assume transitions were at 00:00 local time country-wide.
1444 #
1445 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1446 Rule Ecuador 1992 only - Nov 28 0:00 1:00 -
1447 Rule Ecuador 1993 only - Feb 5 0:00 0 -
1448 #
1449 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1450 Zone America/Guayaquil -5:19:20 - LMT 1890
1451 -5:14:00 - QMT 1931 # Quito Mean Time
1452 -5:00 Ecuador -05/-04
1453 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1454 -5:00 - -05 1986
1455 -6:00 Ecuador -06/-05
1456
1457 # Falklands
1458
1459 # From Paul Eggert (2006-03-22):
1460 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1461 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1462
1463 # From Falkland Islands Government Office, London (2001-01-22)
1464 # via Jesper Nørgaard:
1465 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1466 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1467 # September. It is anticipated that the clocks will revert back at 2
1468 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1469 # Sunday 1 September.
1532 # summer time on a trial basis only. FIG need to contact IANA and/or
1533 # the maintainers of the database to inform them we're adopting
1534 # the same policy this year and suggest recommendations for future years.
1535 #
1536 # For now we will assume permanent -03 for the Falklands
1537 # until advised differently (to apply for 2012 and beyond, after the 2011
1538 # experiment was apparently successful.)
1539 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1540 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 -
1541 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
1542 Rule Falk 1939 only - Oct 1 0:00 1:00 -
1543 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 -
1544 Rule Falk 1943 only - Jan 1 0:00 0 -
1545 Rule Falk 1983 only - Sep lastSun 0:00 1:00 -
1546 Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
1547 Rule Falk 1984 only - Sep 16 0:00 1:00 -
1548 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 -
1549 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
1550 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
1551 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 -
1552 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1553 Zone Atlantic/Stanley -3:51:24 - LMT 1890
1554 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
1555 -4:00 Falk -04/-03 1983 May
1556 -3:00 Falk -03/-02 1985 Sep 15
1557 -4:00 Falk -04/-03 2010 Sep 5 2:00
1558 -3:00 - -03
1559
1560 # French Guiana
1561 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1562 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1563 -4:00 - -04 1967 Oct
1564 -3:00 - -03
1565
1566 # Guyana
1567 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1568 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1569 -3:45 - -0345 1975 Jul 31
1570 -3:00 - -03 1991
1571 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1572 -4:00 - -04
1573
1574 # Paraguay
1575 #
1576 # From Paul Eggert (2006-03-22):
1577 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1578 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1579 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1580 #
1581 # From Waldemar Villamayor-Venialbo (2013-09-20):
1582 # No time of the day is established for the adjustment, so people normally
1583 # adjust their clocks at 0 hour of the given dates.
1584 #
1585 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1586 Rule Para 1975 1988 - Oct 1 0:00 1:00 -
1587 Rule Para 1975 1978 - Mar 1 0:00 0 -
1641 # Art. 1. It is hereby established that from the second Sunday of the month of
1642 # April of this year (2010), the official time is to be set back 60 minutes,
1643 # and that on the first Sunday of the month of October, it is to be set
1644 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1645 # ...
1646 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 -
1647 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1648 #
1649 # From Steffen Thorsen (2013-03-07):
1650 # Paraguay will end DST on 2013-03-24 00:00....
1651 # http://www.ande.gov.py/interna.php?id=1075
1652 #
1653 # From Carlos Raúl Perasso (2013-03-15):
1654 # The change in Paraguay is now final. Decree number 10780
1655 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1656 # From Carlos Raúl Perasso (2014-02-28):
1657 # Decree 1264 can be found at:
1658 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1659 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1660
1661 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1662 Zone America/Asuncion -3:50:40 - LMT 1890
1663 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1664 -4:00 - -04 1972 Oct
1665 -3:00 - -03 1974 Apr
1666 -4:00 Para -04/-03
1667
1668 # Peru
1669 #
1670 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1671 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1672 # When we were in Peru in 1985-1986, they apparently switched over
1673 # sometime between December 29 and January 3 while we were on the Amazon.
1674 #
1675 # From Paul Eggert (2006-03-22):
1676 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1677
1678 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1679 Rule Peru 1938 only - Jan 1 0:00 1:00 -
1680 Rule Peru 1938 only - Apr 1 0:00 0 -
1681 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 -
1682 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1683 Rule Peru 1986 1987 - Jan 1 0:00 1:00 -
1684 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1685 Rule Peru 1990 only - Jan 1 0:00 1:00 -
1686 Rule Peru 1990 only - Apr 1 0:00 0 -
1687 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1688 Rule Peru 1994 only - Jan 1 0:00 1:00 -
1689 Rule Peru 1994 only - Apr 1 0:00 0 -
1690 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1691 Zone America/Lima -5:08:12 - LMT 1890
1692 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
1693 -5:00 Peru -05/-04
1694
1695 # South Georgia
1696 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1697 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
1698 -2:00 - -02
1699
1700 # South Sandwich Is
1701 # uninhabited; scientific personnel have wintered
1702
1703 # Suriname
1704 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1705 Zone America/Paramaribo -3:40:40 - LMT 1911
1706 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1707 -3:40:36 - PMT 1945 Oct # The capital moved?
1708 -3:30 - -0330 1984 Oct
1709 -3:00 - -03
1710
1711 # Trinidad and Tobago
1712 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1713 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1714 -4:00 - AST
1715
1716 # These all agree with Trinidad and Tobago since 1970.
1717 Link America/Port_of_Spain America/Anguilla
1718 Link America/Port_of_Spain America/Antigua
1719 Link America/Port_of_Spain America/Dominica
1720 Link America/Port_of_Spain America/Grenada
1721 Link America/Port_of_Spain America/Guadeloupe
1722 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1723 Link America/Port_of_Spain America/Montserrat
1724 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1725 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1726 Link America/Port_of_Spain America/St_Lucia
1727 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1728 Link America/Port_of_Spain America/St_Vincent
1729 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1730
1731 # Uruguay
1732 # From Paul Eggert (1993-11-18):
1963 # published today in the "Gaceta Oficial de la República Bolivariana
1964 # de Venezuela, número 38.819" (official document for all laws or
1965 # resolution publication)
1966 # http://www.globovision.com/news.php?nid=72208
1967
1968 # From Alexander Krivenyshev (2016-04-15):
1969 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1970 #
1971 # From Paul Eggert (2016-04-15):
1972 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1973 # "'Venezuela's new time-zone: hours without light, hours without water,
1974 # hours of presidential broadcasts, hours of lines,' quipped comedian
1975 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1976 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1977 # https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1978 #
1979 # From Matt Johnson (2016-04-20):
1980 # ... published in the official Gazette [2016-04-18], here:
1981 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1982
1983 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1984 Zone America/Caracas -4:27:44 - LMT 1890
1985 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1986 -4:30 - -0430 1965 Jan 1 0:00
1987 -4:00 - -04 2007 Dec 9 3:00
1988 -4:30 - -0430 2016 May 1 2:30
1989 -4:00 - -04
|