12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 # version 2 for more details (a copy is included in the LICENSE file that 14 # accompanied this code). 15 # 16 # You should have received a copy of the GNU General Public License version 17 # 2 along with this work; if not, write to the Free Software Foundation, 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 # 20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 # or visit www.oracle.com if you need additional information or have any 22 # questions. 23 # 24 # This file is in the public domain, so clarified as of 25 # 2009-05-17 by Arthur David Olson. 26 27 # This file is by no means authoritative; if you think you know better, 28 # go ahead and edit the file (and please send any changes to 29 # tz@iana.org for general use in the future). For more, please see 30 # the file CONTRIBUTING in the tz distribution. 31 32 # From Paul Eggert (2014-10-31): 33 # 34 # Unless otherwise specified, the source for data through 1990 is: 35 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 36 # San Diego: ACS Publications, Inc. (2003). 37 # Unfortunately this book contains many errors and cites no sources. 38 # 39 # Gwillim Law writes that a good source 40 # for recent time zone data is the International Air Transport 41 # Association's Standard Schedules Information Manual (IATA SSIM), 42 # published semiannually. Law sent in several helpful summaries 43 # of the IATA's data after 1990. Except where otherwise noted, 44 # IATA SSIM is the source for entries after 1990. 45 # 46 # For data circa 1899, a common source is: 47 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 48 # http://www.jstor.org/stable/1774359 49 # 50 # Earlier editions of these tables used the North American style (e.g. ARST and 51 # ARDT for Argentine Standard and Daylight Time), but the following quote 52 # suggests that it's better to use European style (e.g. ART and ARST). 53 # I suggest the use of _Summer time_ instead of the more cumbersome 54 # _daylight-saving time_. _Summer time_ seems to be in general use 55 # in Europe and South America. 56 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in 57 # H L Mencken, _The American Language: Supplement I_ (1960), p 466 58 # 59 # Earlier editions of these tables also used the North American style 60 # for time zones in Brazil, but this was incorrect, as Brazilians say 61 # "summer time". Reinaldo Goulart, a São Paulo businessman active in 62 # the railroad sector, writes (1999-07-06): 63 # The subject of time zones is currently a matter of discussion/debate in 64 # Brazil. Let's say that "the Brasília time" is considered the 65 # "official time" because Brasília is the capital city. 66 # The other three time zones are called "Brasília time "minus one" or 67 # "plus one" or "plus two". As far as I know there is no such 68 # name/designation as "Eastern Time" or "Central Time". 69 # So I invented the following (English-language) abbreviations for now. 70 # Corrections are welcome! 71 # std dst 72 # -2:00 FNT FNST Fernando de Noronha 73 # -3:00 BRT BRST Brasília 74 # -4:00 AMT AMST Amazon 75 # -5:00 ACT ACST Acre 76 77 ############################################################################### 78 79 ############################################################################### 80 81 # Argentina 82 83 # From Bob Devine (1988-01-28): 84 # Argentina: first Sunday in October to first Sunday in April since 1976. 85 # Double Summer time from 1969 to 1974. Switches at midnight. 86 87 # From U. S. Naval Observatory (1988-01-19): 88 # ARGENTINA 3 H BEHIND UTC 89 90 # From Hernan G. Otero (1995-06-26): 91 # I am sending modifications to the Argentine time zone table... 92 # AR was chosen because they are the ISO letters that represent Argentina. 93 94 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 95 Rule Arg 1930 only - Dec 1 0:00 1:00 S 390 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 391 # is ambiguous because establishes a calendar from the 2nd Sunday in 392 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the 393 # complement of that starting on the 2nd Sunday of March at 0:00 and 394 # ending on the 2nd Saturday of March at 24:00. 395 # 396 # This clearly breaks every time the 1st of March or October is a Sunday. 397 # 398 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 399 # Sunday of October and March. 400 # 401 # The problem is that the changes in the rest of the Provinces that did 402 # change in 2007/2008, were made according to the Federal Law and Decrees 403 # that did so on the 3rd Sunday of October and March. 404 # 405 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 406 # (October 11th) at 0:00. 407 # 408 # So I guess a new set of rules, besides "Arg", must be made and the last 409 # America/Argentina/San_Luis entries should change to use these... 410 # 411 # I'm enclosing a patch that does what I say... regretfully, the San Luis 412 # timezone must be called "WART/WARST" even when most of the time (like, 413 # right now) WARST == ART... that is, since last Sunday, all the country 414 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 415 # of the country calls it "ART". 416 # ... 417 418 # From Alexander Krivenyshev (2010-04-09): 419 # According to news reports from El Diario de la República Province San 420 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 421 # after April 11, 2010 - will continue to have same time as rest of 422 # Argentina (UTC-3) (no DST). 423 # 424 # Confirmaron la prórroga del huso horario de verano (Spanish) 425 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 426 # or (some English translation): 427 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 428 429 # From Mariano Absatz (2010-04-12): 430 # yes...I can confirm this...and given that San Luis keeps calling 431 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 432 # rules...San Luis is still using "Western ARgentina Time" and it got 433 # stuck on Summer daylight savings time even though the summer is over. 434 435 # From Paul Eggert (2013-09-05): 436 # Perhaps San Luis operates on the legal fiction that it is at -04 437 # with perpetual summer time, but ordinary usage typically seems to 438 # just say it's at -03; see, for example, 439 # http://es.wikipedia.org/wiki/Hora_oficial_argentina 440 # We've documented similar situations as being plain changes to 441 # standard time, so let's do that here too. This does not change UTC 442 # offsets, only tm_isdst and the time zone abbreviations. One minor 443 # plus is that this silences a zic complaint that there's no POSIX TZ 444 # setting for time stamps past 2038. 445 446 # From Paul Eggert (2013-02-21): 447 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second. 448 449 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 450 # 451 # Buenos Aires (BA), Capital Federal (CF), 452 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 453 -4:16:48 - CMT 1920 May # Córdoba Mean Time 454 -4:00 - ART 1930 Dec 455 -4:00 Arg AR%sT 1969 Oct 5 456 -3:00 Arg AR%sT 1999 Oct 3 457 -4:00 Arg AR%sT 2000 Mar 3 458 -3:00 Arg AR%sT 459 # 460 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), 461 # Chaco (CC), Formosa (FM), Santiago del Estero (SE) 462 # 463 # Shanks & Pottenger also make the following claims, which we haven't verified: 464 # - Formosa switched to -3:00 on 1991-01-07. 465 # - Misiones switched to -3:00 on 1990-12-29. 466 # - Chaco switched to -3:00 on 1991-01-04. 467 # - Santiago del Estero switched to -4:00 on 1991-04-01, 468 # then to -3:00 on 1991-04-26. 469 # 470 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 471 -4:16:48 - CMT 1920 May 472 -4:00 - ART 1930 Dec 473 -4:00 Arg AR%sT 1969 Oct 5 474 -3:00 Arg AR%sT 1991 Mar 3 475 -4:00 - WART 1991 Oct 20 476 -3:00 Arg AR%sT 1999 Oct 3 477 -4:00 Arg AR%sT 2000 Mar 3 478 -3:00 Arg AR%sT 479 # 480 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) 481 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 482 -4:16:48 - CMT 1920 May 483 -4:00 - ART 1930 Dec 484 -4:00 Arg AR%sT 1969 Oct 5 485 -3:00 Arg AR%sT 1991 Mar 3 486 -4:00 - WART 1991 Oct 20 487 -3:00 Arg AR%sT 1999 Oct 3 488 -4:00 Arg AR%sT 2000 Mar 3 489 -3:00 Arg AR%sT 2008 Oct 18 490 -3:00 - ART 491 # 492 # Tucumán (TM) 493 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 494 -4:16:48 - CMT 1920 May 495 -4:00 - ART 1930 Dec 496 -4:00 Arg AR%sT 1969 Oct 5 497 -3:00 Arg AR%sT 1991 Mar 3 498 -4:00 - WART 1991 Oct 20 499 -3:00 Arg AR%sT 1999 Oct 3 500 -4:00 Arg AR%sT 2000 Mar 3 501 -3:00 - ART 2004 Jun 1 502 -4:00 - WART 2004 Jun 13 503 -3:00 Arg AR%sT 504 # 505 # La Rioja (LR) 506 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 507 -4:16:48 - CMT 1920 May 508 -4:00 - ART 1930 Dec 509 -4:00 Arg AR%sT 1969 Oct 5 510 -3:00 Arg AR%sT 1991 Mar 1 511 -4:00 - WART 1991 May 7 512 -3:00 Arg AR%sT 1999 Oct 3 513 -4:00 Arg AR%sT 2000 Mar 3 514 -3:00 - ART 2004 Jun 1 515 -4:00 - WART 2004 Jun 20 516 -3:00 Arg AR%sT 2008 Oct 18 517 -3:00 - ART 518 # 519 # San Juan (SJ) 520 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 521 -4:16:48 - CMT 1920 May 522 -4:00 - ART 1930 Dec 523 -4:00 Arg AR%sT 1969 Oct 5 524 -3:00 Arg AR%sT 1991 Mar 1 525 -4:00 - WART 1991 May 7 526 -3:00 Arg AR%sT 1999 Oct 3 527 -4:00 Arg AR%sT 2000 Mar 3 528 -3:00 - ART 2004 May 31 529 -4:00 - WART 2004 Jul 25 530 -3:00 Arg AR%sT 2008 Oct 18 531 -3:00 - ART 532 # 533 # Jujuy (JY) 534 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 535 -4:16:48 - CMT 1920 May 536 -4:00 - ART 1930 Dec 537 -4:00 Arg AR%sT 1969 Oct 5 538 -3:00 Arg AR%sT 1990 Mar 4 539 -4:00 - WART 1990 Oct 28 540 -4:00 1:00 WARST 1991 Mar 17 541 -4:00 - WART 1991 Oct 6 542 -3:00 1:00 ARST 1992 543 -3:00 Arg AR%sT 1999 Oct 3 544 -4:00 Arg AR%sT 2000 Mar 3 545 -3:00 Arg AR%sT 2008 Oct 18 546 -3:00 - ART 547 # 548 # Catamarca (CT), Chubut (CH) 549 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 550 -4:16:48 - CMT 1920 May 551 -4:00 - ART 1930 Dec 552 -4:00 Arg AR%sT 1969 Oct 5 553 -3:00 Arg AR%sT 1991 Mar 3 554 -4:00 - WART 1991 Oct 20 555 -3:00 Arg AR%sT 1999 Oct 3 556 -4:00 Arg AR%sT 2000 Mar 3 557 -3:00 - ART 2004 Jun 1 558 -4:00 - WART 2004 Jun 20 559 -3:00 Arg AR%sT 2008 Oct 18 560 -3:00 - ART 561 # 562 # Mendoza (MZ) 563 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 564 -4:16:48 - CMT 1920 May 565 -4:00 - ART 1930 Dec 566 -4:00 Arg AR%sT 1969 Oct 5 567 -3:00 Arg AR%sT 1990 Mar 4 568 -4:00 - WART 1990 Oct 15 569 -4:00 1:00 WARST 1991 Mar 1 570 -4:00 - WART 1991 Oct 15 571 -4:00 1:00 WARST 1992 Mar 1 572 -4:00 - WART 1992 Oct 18 573 -3:00 Arg AR%sT 1999 Oct 3 574 -4:00 Arg AR%sT 2000 Mar 3 575 -3:00 - ART 2004 May 23 576 -4:00 - WART 2004 Sep 26 577 -3:00 Arg AR%sT 2008 Oct 18 578 -3:00 - ART 579 # 580 # San Luis (SL) 581 582 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 583 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S 584 585 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 586 -4:16:48 - CMT 1920 May 587 -4:00 - ART 1930 Dec 588 -4:00 Arg AR%sT 1969 Oct 5 589 -3:00 Arg AR%sT 1990 590 -3:00 1:00 ARST 1990 Mar 14 591 -4:00 - WART 1990 Oct 15 592 -4:00 1:00 WARST 1991 Mar 1 593 -4:00 - WART 1991 Jun 1 594 -3:00 - ART 1999 Oct 3 595 -4:00 1:00 WARST 2000 Mar 3 596 -3:00 - ART 2004 May 31 597 -4:00 - WART 2004 Jul 25 598 -3:00 Arg AR%sT 2008 Jan 21 599 -4:00 SanLuis WAR%sT 2009 Oct 11 600 -3:00 - ART 601 # 602 # Santa Cruz (SC) 603 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 604 -4:16:48 - CMT 1920 May # Córdoba Mean Time 605 -4:00 - ART 1930 Dec 606 -4:00 Arg AR%sT 1969 Oct 5 607 -3:00 Arg AR%sT 1999 Oct 3 608 -4:00 Arg AR%sT 2000 Mar 3 609 -3:00 - ART 2004 Jun 1 610 -4:00 - WART 2004 Jun 20 611 -3:00 Arg AR%sT 2008 Oct 18 612 -3:00 - ART 613 # 614 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) 615 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 616 -4:16:48 - CMT 1920 May # Córdoba Mean Time 617 -4:00 - ART 1930 Dec 618 -4:00 Arg AR%sT 1969 Oct 5 619 -3:00 Arg AR%sT 1999 Oct 3 620 -4:00 Arg AR%sT 2000 Mar 3 621 -3:00 - ART 2004 May 30 622 -4:00 - WART 2004 Jun 20 623 -3:00 Arg AR%sT 2008 Oct 18 624 -3:00 - ART 625 626 # Aruba 627 Link America/Curacao America/Aruba 628 629 # Bolivia 630 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 631 Zone America/La_Paz -4:32:36 - LMT 1890 632 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 633 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 634 -4:00 - BOT # Bolivia Time 635 636 # Brazil 637 638 # From Paul Eggert (1993-11-18): 639 # The mayor of Rio recently attempted to change the time zone rules 640 # just in his city, in order to leave more summer time for the tourist trade. 641 # The rule change lasted only part of the day; 642 # the federal government refused to follow the city's rules, and business 643 # was in a chaos, so the mayor backed down that afternoon. 644 645 # From IATA SSIM (1996-02): 646 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 647 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), 648 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), 649 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 650 # [The last three states are new to this issue of the IATA SSIM.] 651 652 # From Gwillim Law (1996-10-07): 653 # Geography, history (Tocantins was part of Goiás until 1989), and other 654 # sources of time zone information lead me to believe that AL, SE, and TO were 966 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 967 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 968 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 969 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 970 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 971 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 972 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 973 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 974 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 975 # From Arthur David Olson (2008-09-29): 976 # The next is wrong in some years but is better than nothing. 977 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 978 979 # The latest ruleset listed above says that the following states observe DST: 980 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 981 982 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 983 # 984 # Fernando de Noronha (administratively part of PE) 985 Zone America/Noronha -2:09:40 - LMT 1914 986 -2:00 Brazil FN%sT 1990 Sep 17 987 -2:00 - FNT 1999 Sep 30 988 -2:00 Brazil FN%sT 2000 Oct 15 989 -2:00 - FNT 2001 Sep 13 990 -2:00 Brazil FN%sT 2002 Oct 1 991 -2:00 - FNT 992 # Other Atlantic islands have no permanent settlement. 993 # These include Trindade and Martim Vaz (administratively part of ES), 994 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 995 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 996 # it also included the Penedos. 997 # 998 # Amapá (AP), east Pará (PA) 999 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. 1000 # The division between east and west Pará is the river Xingu. 1001 # In the north a very small part from the river Javary (now Jari I guess, 1002 # the border with Amapá) to the Amazon, then to the Xingu. 1003 Zone America/Belem -3:13:56 - LMT 1914 1004 -3:00 Brazil BR%sT 1988 Sep 12 1005 -3:00 - BRT 1006 # 1007 # west Pará (PA) 1008 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. 1009 Zone America/Santarem -3:38:48 - LMT 1914 1010 -4:00 Brazil AM%sT 1988 Sep 12 1011 -4:00 - AMT 2008 Jun 24 0:00 1012 -3:00 - BRT 1013 # 1014 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), 1015 # Paraíba (PB) 1016 Zone America/Fortaleza -2:34:00 - LMT 1914 1017 -3:00 Brazil BR%sT 1990 Sep 17 1018 -3:00 - BRT 1999 Sep 30 1019 -3:00 Brazil BR%sT 2000 Oct 22 1020 -3:00 - BRT 2001 Sep 13 1021 -3:00 Brazil BR%sT 2002 Oct 1 1022 -3:00 - BRT 1023 # 1024 # Pernambuco (PE) (except Atlantic islands) 1025 Zone America/Recife -2:19:36 - LMT 1914 1026 -3:00 Brazil BR%sT 1990 Sep 17 1027 -3:00 - BRT 1999 Sep 30 1028 -3:00 Brazil BR%sT 2000 Oct 15 1029 -3:00 - BRT 2001 Sep 13 1030 -3:00 Brazil BR%sT 2002 Oct 1 1031 -3:00 - BRT 1032 # 1033 # Tocantins (TO) 1034 Zone America/Araguaina -3:12:48 - LMT 1914 1035 -3:00 Brazil BR%sT 1990 Sep 17 1036 -3:00 - BRT 1995 Sep 14 1037 -3:00 Brazil BR%sT 2003 Sep 24 1038 -3:00 - BRT 2012 Oct 21 1039 -3:00 Brazil BR%sT 2013 Sep 1040 -3:00 - BRT 1041 # 1042 # Alagoas (AL), Sergipe (SE) 1043 Zone America/Maceio -2:22:52 - LMT 1914 1044 -3:00 Brazil BR%sT 1990 Sep 17 1045 -3:00 - BRT 1995 Oct 13 1046 -3:00 Brazil BR%sT 1996 Sep 4 1047 -3:00 - BRT 1999 Sep 30 1048 -3:00 Brazil BR%sT 2000 Oct 22 1049 -3:00 - BRT 2001 Sep 13 1050 -3:00 Brazil BR%sT 2002 Oct 1 1051 -3:00 - BRT 1052 # 1053 # Bahia (BA) 1054 # There are too many Salvadors elsewhere, so use America/Bahia instead 1055 # of America/Salvador. 1056 Zone America/Bahia -2:34:04 - LMT 1914 1057 -3:00 Brazil BR%sT 2003 Sep 24 1058 -3:00 - BRT 2011 Oct 16 1059 -3:00 Brazil BR%sT 2012 Oct 21 1060 -3:00 - BRT 1061 # 1062 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), 1063 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), 1064 # Santa Catarina (SC), Rio Grande do Sul (RS) 1065 Zone America/Sao_Paulo -3:06:28 - LMT 1914 1066 -3:00 Brazil BR%sT 1963 Oct 23 0:00 1067 -3:00 1:00 BRST 1964 1068 -3:00 Brazil BR%sT 1069 # 1070 # Mato Grosso do Sul (MS) 1071 Zone America/Campo_Grande -3:38:28 - LMT 1914 1072 -4:00 Brazil AM%sT 1073 # 1074 # Mato Grosso (MT) 1075 Zone America/Cuiaba -3:44:20 - LMT 1914 1076 -4:00 Brazil AM%sT 2003 Sep 24 1077 -4:00 - AMT 2004 Oct 1 1078 -4:00 Brazil AM%sT 1079 # 1080 # Rondônia (RO) 1081 Zone America/Porto_Velho -4:15:36 - LMT 1914 1082 -4:00 Brazil AM%sT 1988 Sep 12 1083 -4:00 - AMT 1084 # 1085 # Roraima (RR) 1086 Zone America/Boa_Vista -4:02:40 - LMT 1914 1087 -4:00 Brazil AM%sT 1988 Sep 12 1088 -4:00 - AMT 1999 Sep 30 1089 -4:00 Brazil AM%sT 2000 Oct 15 1090 -4:00 - AMT 1091 # 1092 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto 1093 # The great circle line from Tabatinga to Porto Acre divides 1094 # east from west Amazonas. 1095 Zone America/Manaus -4:00:04 - LMT 1914 1096 -4:00 Brazil AM%sT 1988 Sep 12 1097 -4:00 - AMT 1993 Sep 28 1098 -4:00 Brazil AM%sT 1994 Sep 22 1099 -4:00 - AMT 1100 # 1101 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1102 # Eirunepé, Envira, Ipixuna 1103 Zone America/Eirunepe -4:39:28 - LMT 1914 1104 -5:00 Brazil AC%sT 1988 Sep 12 1105 -5:00 - ACT 1993 Sep 28 1106 -5:00 Brazil AC%sT 1994 Sep 22 1107 -5:00 - ACT 2008 Jun 24 0:00 1108 -4:00 - AMT 2013 Nov 10 1109 -5:00 - ACT 1110 # 1111 # Acre (AC) 1112 Zone America/Rio_Branco -4:31:12 - LMT 1914 1113 -5:00 Brazil AC%sT 1988 Sep 12 1114 -5:00 - ACT 2008 Jun 24 0:00 1115 -4:00 - AMT 2013 Nov 10 1116 -5:00 - ACT 1117 1118 # Chile 1119 1120 # From Paul Eggert (2015-04-03): 1121 # Shanks & Pottenger says America/Santiago introduced standard time in 1122 # 1890 and rounds its UTC offset to 70W40; guess that in practice this 1123 # was the same offset as in 1916-1919. It also says Pacific/Easter 1124 # standardized on 109W22 in 1890; assume this didn't change the clocks. 1125 # 1126 # Dates for America/Santiago from 1910 to 2004 are primarily from 1127 # the following source, cited by Oscar van Vlijmen (2006-10-08): 1128 # [1] Chile Law 1129 # http://www.webexhibits.org/daylightsaving/chile.html 1130 # This contains a copy of a this official table: 1131 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) 1132 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm 1133 # [1] needs several corrections, though. 1134 # 1135 # The first set of corrections is from: 1136 # [2] History of the Official Time of Chile 1241 # permanently until March 25 of 2017 1242 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg 1243 # 1244 # From Paul Eggert (2015-03-03): 1245 # For now, assume that the extension will persist indefinitely. 1246 1247 # From Juan Correa (2016-03-18): 1248 # The decree regarding DST has been published in today's Official Gazette: 1249 # http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/ 1250 # http://www.leychile.cl/Navegar?idNorma=1088502 1251 # It does consider the second Saturday of May and August as the dates 1252 # for the transition; and it lists DST dates until 2019, but I think 1253 # this scheme will stick. 1254 # 1255 # From Paul Eggert (2016-03-18): 1256 # For now, assume the pattern holds for the indefinite future. 1257 # The decree says transitions occur at 24:00; in practice this appears 1258 # to mean 24:00 mainland time, not 24:00 local time, so that Easter 1259 # Island is always two hours behind the mainland. 1260 1261 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1262 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 1263 Rule Chile 1928 1932 - Apr 1 0:00 0 - 1264 Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1265 Rule Chile 1969 only - Mar 30 3:00u 0 - 1266 Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1267 Rule Chile 1970 only - Mar 29 3:00u 0 - 1268 Rule Chile 1971 only - Mar 14 3:00u 0 - 1269 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1270 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1271 Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1272 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1273 Rule Chile 1987 only - Apr 12 3:00u 0 - 1274 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - 1275 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S 1276 Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1277 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1278 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1279 Rule Chile 1997 only - Mar 30 3:00u 0 - 1280 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1281 Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1282 Rule Chile 1999 only - Apr 4 3:00u 0 - 1283 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1284 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1285 # N.B.: the end of March 29 in Chile is March 30 in Universal time, 1286 # which is used below in specifying the transition. 1287 Rule Chile 2008 only - Mar 30 3:00u 0 - 1288 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1289 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1290 Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1291 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1292 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - 1293 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S 1294 Rule Chile 2016 max - May Sun>=9 3:00u 0 - 1295 Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S 1296 # IATA SSIM anomalies: (1992-02) says 1992-03-14; 1297 # (1996-09) says 1998-03-08. Ignore these. 1298 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1299 Zone America/Santiago -4:42:46 - LMT 1890 1300 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time 1301 -5:00 - CLT 1916 Jul 1 # Chile Time 1302 -4:42:46 - SMT 1918 Sep 10 1303 -4:00 - CLT 1919 Jul 1 1304 -4:42:46 - SMT 1927 Sep 1 1305 -5:00 Chile CL%sT 1932 Sep 1 1306 -4:00 - CLT 1942 Jun 1 1307 -5:00 - CLT 1942 Aug 1 1308 -4:00 - CLT 1946 Jul 15 1309 -4:00 1:00 CLST 1946 Sep 1 # central Chile 1310 -4:00 - CLT 1947 Apr 1 1311 -5:00 - CLT 1947 May 21 23:00 1312 -4:00 Chile CL%sT 1313 Zone Pacific/Easter -7:17:28 - LMT 1890 1314 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1315 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time 1316 -6:00 Chile EAS%sT 1317 # 1318 # Salas y Gómez Island is uninhabited. 1319 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, 1320 # and Antarctic bases, are like America/Santiago. 1321 1322 # Antarctic base using South American rules 1323 # (See the file 'antarctica' for more.) 1324 # 1325 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 1326 # 1327 # From Ethan Dicks (1996-10-06): 1328 # It keeps the same time as Punta Arenas, Chile, because, just like us 1329 # and the South Pole, that's the other end of their supply line.... 1330 # I verified with someone who was there that since 1980, 1331 # Palmer has followed Chile. Prior to that, before the Falklands War, 1332 # Palmer used to be supplied from Argentina. 1333 # 1334 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1335 Zone Antarctica/Palmer 0 - -00 1965 1336 -4:00 Arg AR%sT 1969 Oct 5 1337 -3:00 Arg AR%sT 1982 May 1338 -4:00 Chile CL%sT 1339 1340 # Colombia 1341 1342 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, 1343 # "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1344 1345 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1346 Rule CO 1992 only - May 3 0:00 1:00 S 1347 Rule CO 1993 only - Apr 4 0:00 0 - 1348 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1349 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 1350 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time 1351 -5:00 CO CO%sT # Colombia Time 1352 # Malpelo, Providencia, San Andres 1353 # no information; probably like America/Bogota 1354 1355 # Curaçao 1356 1357 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. 1358 # 1359 # From Paul Eggert (2006-03-22): 1360 # Shanks & Pottenger say that The Bottom and Philipsburg have been at 1361 # -4:00 since standard time was introduced on 1912-03-02; and that 1362 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1363 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1364 # Saba Island has been like Curaçao. 1365 # This all predates our 1970 cutoff, though. 1366 # 1367 # By July 2007 Curaçao and St Maarten are planned to become 1368 # associated states within the Netherlands, much like Aruba; 1369 # Bonaire, Saba and St Eustatius would become directly part of the 1370 # Netherlands as Kingdom Islands. This won't affect their time zones 1371 # though, as far as we know. 1372 # 1373 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1374 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 1375 -4:30 - ANT 1965 # Netherlands Antilles Time 1376 -4:00 - AST 1377 1378 # From Arthur David Olson (2011-06-15): 1379 # use links for places with new iso3166 codes. 1380 # The name "Lower Prince's Quarter" is both longer than fourteen characters 1381 # and contains an apostrophe; use "Lower_Princes" below. 1382 1383 Link America/Curacao America/Lower_Princes # Sint Maarten 1384 Link America/Curacao America/Kralendijk # Caribbean Netherlands 1385 1386 # Ecuador 1387 # 1388 # Milne says the Central and South American Telegraph Company used -5:24:15. 1389 # 1390 # From Paul Eggert (2007-03-04): 1391 # Apparently Ecuador had a failed experiment with DST in 1992. 1392 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1393 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1394 # talk about "hora Sixto". Leave this alone for now, as we have no data. 1395 # 1396 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1397 Zone America/Guayaquil -5:19:20 - LMT 1890 1398 -5:14:00 - QMT 1931 # Quito Mean Time 1399 -5:00 - ECT # Ecuador Time 1400 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1401 -5:00 - ECT 1986 1402 -6:00 - GALT # Galápagos Time 1403 1404 # Falklands 1405 1406 # From Paul Eggert (2006-03-22): 1407 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1408 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1409 1410 # From Falkland Islands Government Office, London (2001-01-22) 1411 # via Jesper Nørgaard: 1412 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1413 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 1414 # September. It is anticipated that the clocks will revert back at 2 1415 # am on Sunday 21 April 2002 and advance to summer time at 2 am on 1416 # Sunday 1 September. 1417 1418 # From Rives McDow (2001-02-13): 1419 # 1420 # I have communicated several times with people there, and the last 1421 # time I had communications that was helpful was in 1998. Here is 1422 # what was said then: 1482 # 1483 # For now we will assume permanent summer time for the Falklands 1484 # until advised differently (to apply for 2012 and beyond, after the 2011 1485 # experiment was apparently successful.) 1486 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1487 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1488 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1489 Rule Falk 1939 only - Oct 1 0:00 1:00 S 1490 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1491 Rule Falk 1943 only - Jan 1 0:00 0 - 1492 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1493 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1494 Rule Falk 1984 only - Sep 16 0:00 1:00 S 1495 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1496 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1497 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1498 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1499 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1500 Zone Atlantic/Stanley -3:51:24 - LMT 1890 1501 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1502 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1503 -3:00 Falk FK%sT 1985 Sep 15 1504 -4:00 Falk FK%sT 2010 Sep 5 2:00 1505 -3:00 - FKST 1506 1507 # French Guiana 1508 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1509 Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1510 -4:00 - GFT 1967 Oct # French Guiana Time 1511 -3:00 - GFT 1512 1513 # Guyana 1514 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1515 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1516 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1517 -3:45 - GYT 1975 Jul 31 # Guyana Time 1518 -3:00 - GYT 1991 1519 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1520 -4:00 - GYT 1521 1522 # Paraguay 1523 # 1524 # From Paul Eggert (2006-03-22): 1525 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 1526 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999 1527 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1528 # 1529 # From Waldemar Villamayor-Venialbo (2013-09-20): 1530 # No time of the day is established for the adjustment, so people normally 1531 # adjust their clocks at 0 hour of the given dates. 1532 # 1533 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1534 Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1535 Rule Para 1975 1978 - Mar 1 0:00 0 - 1536 Rule Para 1979 1991 - Apr 1 0:00 0 - 1537 Rule Para 1989 only - Oct 22 0:00 1:00 S 1538 Rule Para 1990 only - Oct 1 0:00 1:00 S 1539 Rule Para 1991 only - Oct 6 0:00 1:00 S 1540 Rule Para 1992 only - Mar 1 0:00 0 - 1592 # forward 60 minutes, in all the territory of the Paraguayan Republic. 1593 # ... 1594 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1595 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1596 # 1597 # From Steffen Thorsen (2013-03-07): 1598 # Paraguay will end DST on 2013-03-24 00:00.... 1599 # http://www.ande.gov.py/interna.php?id=1075 1600 # 1601 # From Carlos Raúl Perasso (2013-03-15): 1602 # The change in Paraguay is now final. Decree number 10780 1603 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 1604 # From Carlos Raúl Perasso (2014-02-28): 1605 # Decree 1264 can be found at: 1606 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1607 Rule Para 2013 max - Mar Sun>=22 0:00 0 - 1608 1609 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1610 Zone America/Asuncion -3:50:40 - LMT 1890 1611 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time 1612 -4:00 - PYT 1972 Oct # Paraguay Time 1613 -3:00 - PYT 1974 Apr 1614 -4:00 Para PY%sT 1615 1616 # Peru 1617 # 1618 # From Evelyn C. Leeper via Mark Brader (2003-10-26) 1619 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>: 1620 # When we were in Peru in 1985-1986, they apparently switched over 1621 # sometime between December 29 and January 3 while we were on the Amazon. 1622 # 1623 # From Paul Eggert (2006-03-22): 1624 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1625 1626 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1627 Rule Peru 1938 only - Jan 1 0:00 1:00 S 1628 Rule Peru 1938 only - Apr 1 0:00 0 - 1629 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1630 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1631 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1632 Rule Peru 1986 1987 - Apr 1 0:00 0 - 1633 Rule Peru 1990 only - Jan 1 0:00 1:00 S 1634 Rule Peru 1990 only - Apr 1 0:00 0 - 1635 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1636 Rule Peru 1994 only - Jan 1 0:00 1:00 S 1637 Rule Peru 1994 only - Apr 1 0:00 0 - 1638 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1639 Zone America/Lima -5:08:12 - LMT 1890 1640 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1641 -5:00 Peru PE%sT # Peru Time 1642 1643 # South Georgia 1644 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1645 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1646 -2:00 - GST # South Georgia Time 1647 1648 # South Sandwich Is 1649 # uninhabited; scientific personnel have wintered 1650 1651 # Suriname 1652 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1653 Zone America/Paramaribo -3:40:40 - LMT 1911 1654 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1655 -3:40:36 - PMT 1945 Oct # The capital moved? 1656 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1657 -3:30 - SRT 1984 Oct # Suriname Time 1658 -3:00 - SRT 1659 1660 # Trinidad and Tobago 1661 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1662 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1663 -4:00 - AST 1664 1665 # These all agree with Trinidad and Tobago since 1970. 1666 Link America/Port_of_Spain America/Anguilla 1667 Link America/Port_of_Spain America/Antigua 1668 Link America/Port_of_Spain America/Dominica 1669 Link America/Port_of_Spain America/Grenada 1670 Link America/Port_of_Spain America/Guadeloupe 1671 Link America/Port_of_Spain America/Marigot # St Martin (French part) 1672 Link America/Port_of_Spain America/Montserrat 1673 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy 1674 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis 1675 Link America/Port_of_Spain America/St_Lucia 1676 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) 1677 Link America/Port_of_Spain America/St_Vincent 1678 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) 1741 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1742 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1743 # 02:00 local time, official time in Uruguay will be at GMT -2. 1744 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1745 Rule Uruguay 2006 only - Mar 12 2:00 0 - 1746 # From Jesper Nørgaard Welen (2006-09-06): 1747 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1748 # 1749 # From Steffen Thorsen (2015-06-30): 1750 # ... it looks like they will not be using DST the coming summer: 1751 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 1752 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ 1753 # From Paul Eggert (2015-06-30): 1754 # Apparently restaurateurs complained that DST caused people to go to the beach 1755 # instead of out to dinner. 1756 # From Pablo Camargo (2015-07-13): 1757 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf 1758 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04] 1759 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S 1760 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 - 1761 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1762 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1763 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1764 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1765 -3:00 Uruguay UY%sT 1766 1767 # Venezuela 1768 # 1769 # From Paul Eggert (2015-07-28): 1770 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 1771 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf 1772 # 1773 # From John Stainforth (2007-11-28): 1774 # ... the change for Venezuela originally expected for 2007-12-31 has 1775 # been brought forward to 2007-12-09. The official announcement was 1776 # published today in the "Gaceta Oficial de la República Bolivariana 1777 # de Venezuela, número 38.819" (official document for all laws or 1778 # resolution publication) 1779 # http://www.globovision.com/news.php?nid=72208 1780 1781 # From Alexander Krivenyshev (2016-04-15): 1782 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino 1783 # 1784 # From Paul Eggert (2016-04-15): 1785 # Clocks advance 30 minutes on 2016-05-01 at 02:30.... 1786 # "'Venezuela's new time-zone: hours without light, hours without water, 1787 # hours of presidential broadcasts, hours of lines,' quipped comedian 1788 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps 1789 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 1790 # http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE 1791 # 1792 # From Matt Johnson (2016-04-20): 1793 # ... published in the official Gazette [2016-04-18], here: 1794 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf 1795 1796 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1797 Zone America/Caracas -4:27:44 - LMT 1890 1798 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1799 -4:30 - VET 1965 Jan 1 0:00 # Venezuela T. 1800 -4:00 - VET 2007 Dec 9 3:00 1801 -4:30 - VET 2016 May 1 2:30 1802 -4:00 - VET | 12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 # version 2 for more details (a copy is included in the LICENSE file that 14 # accompanied this code). 15 # 16 # You should have received a copy of the GNU General Public License version 17 # 2 along with this work; if not, write to the Free Software Foundation, 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 # 20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 # or visit www.oracle.com if you need additional information or have any 22 # questions. 23 # 24 # This file is in the public domain, so clarified as of 25 # 2009-05-17 by Arthur David Olson. 26 27 # This file is by no means authoritative; if you think you know better, 28 # go ahead and edit the file (and please send any changes to 29 # tz@iana.org for general use in the future). For more, please see 30 # the file CONTRIBUTING in the tz distribution. 31 32 # From Paul Eggert (2016-12-05): 33 # 34 # Unless otherwise specified, the source for data through 1990 is: 35 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 36 # San Diego: ACS Publications, Inc. (2003). 37 # Unfortunately this book contains many errors and cites no sources. 38 # 39 # Many years ago Gwillim Law wrote that a good source 40 # for time zone data was the International Air Transport 41 # Association's Standard Schedules Information Manual (IATA SSIM), 42 # published semiannually. Law sent in several helpful summaries 43 # of the IATA's data after 1990. Except where otherwise noted, 44 # IATA SSIM is the source for entries after 1990. 45 # 46 # For data circa 1899, a common source is: 47 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 48 # http://www.jstor.org/stable/1774359 49 # 50 # These tables use numeric abbreviations like -03 and -0330 for 51 # integer hour and minute UTC offsets. Although earlier editions used 52 # alphabetic time zone abbreviations, these abbreviations were 53 # invented and did not reflect common practice. 54 55 ############################################################################### 56 57 ############################################################################### 58 59 # Argentina 60 61 # From Bob Devine (1988-01-28): 62 # Argentina: first Sunday in October to first Sunday in April since 1976. 63 # Double Summer time from 1969 to 1974. Switches at midnight. 64 65 # From U. S. Naval Observatory (1988-01-19): 66 # ARGENTINA 3 H BEHIND UTC 67 68 # From Hernan G. Otero (1995-06-26): 69 # I am sending modifications to the Argentine time zone table... 70 # AR was chosen because they are the ISO letters that represent Argentina. 71 72 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 73 Rule Arg 1930 only - Dec 1 0:00 1:00 S 368 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 369 # is ambiguous because establishes a calendar from the 2nd Sunday in 370 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the 371 # complement of that starting on the 2nd Sunday of March at 0:00 and 372 # ending on the 2nd Saturday of March at 24:00. 373 # 374 # This clearly breaks every time the 1st of March or October is a Sunday. 375 # 376 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 377 # Sunday of October and March. 378 # 379 # The problem is that the changes in the rest of the Provinces that did 380 # change in 2007/2008, were made according to the Federal Law and Decrees 381 # that did so on the 3rd Sunday of October and March. 382 # 383 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 384 # (October 11th) at 0:00. 385 # 386 # So I guess a new set of rules, besides "Arg", must be made and the last 387 # America/Argentina/San_Luis entries should change to use these... 388 # ... 389 390 # From Alexander Krivenyshev (2010-04-09): 391 # According to news reports from El Diario de la República Province San 392 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 393 # after April 11, 2010 - will continue to have same time as rest of 394 # Argentina (UTC-3) (no DST). 395 # 396 # Confirmaron la prórroga del huso horario de verano (Spanish) 397 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 398 # or (some English translation): 399 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 400 401 # From Mariano Absatz (2010-04-12): 402 # yes...I can confirm this...and given that San Luis keeps calling 403 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 404 # rules...San Luis is still using "Western ARgentina Time" and it got 405 # stuck on Summer daylight savings time even though the summer is over. 406 407 # From Paul Eggert (2013-09-05): 408 # Perhaps San Luis operates on the legal fiction that it is at -04 409 # with perpetual summer time, but ordinary usage typically seems to 410 # just say it's at -03; see, for example, 411 # http://es.wikipedia.org/wiki/Hora_oficial_argentina 412 # We've documented similar situations as being plain changes to 413 # standard time, so let's do that here too. This does not change UTC 414 # offsets, only tm_isdst and the time zone abbreviations. One minor 415 # plus is that this silences a zic complaint that there's no POSIX TZ 416 # setting for time stamps past 2038. 417 418 # From Paul Eggert (2013-02-21): 419 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second. 420 421 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 422 # 423 # Buenos Aires (BA), Capital Federal (CF), 424 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 425 -4:16:48 - CMT 1920 May # Córdoba Mean Time 426 -4:00 - -04 1930 Dec 427 -4:00 Arg -04/-03 1969 Oct 5 428 -3:00 Arg -03/-02 1999 Oct 3 429 -4:00 Arg -04/-03 2000 Mar 3 430 -3:00 Arg -03/-02 431 # 432 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), 433 # Chaco (CC), Formosa (FM), Santiago del Estero (SE) 434 # 435 # Shanks & Pottenger also make the following claims, which we haven't verified: 436 # - Formosa switched to -3:00 on 1991-01-07. 437 # - Misiones switched to -3:00 on 1990-12-29. 438 # - Chaco switched to -3:00 on 1991-01-04. 439 # - Santiago del Estero switched to -4:00 on 1991-04-01, 440 # then to -3:00 on 1991-04-26. 441 # 442 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 443 -4:16:48 - CMT 1920 May 444 -4:00 - -04 1930 Dec 445 -4:00 Arg -04/-03 1969 Oct 5 446 -3:00 Arg -03/-02 1991 Mar 3 447 -4:00 - -04 1991 Oct 20 448 -3:00 Arg -03/-02 1999 Oct 3 449 -4:00 Arg -04/-03 2000 Mar 3 450 -3:00 Arg -03/-02 451 # 452 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) 453 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 454 -4:16:48 - CMT 1920 May 455 -4:00 - -04 1930 Dec 456 -4:00 Arg -04/-03 1969 Oct 5 457 -3:00 Arg -03/-02 1991 Mar 3 458 -4:00 - -04 1991 Oct 20 459 -3:00 Arg -03/-02 1999 Oct 3 460 -4:00 Arg -04/-03 2000 Mar 3 461 -3:00 Arg -03/-02 2008 Oct 18 462 -3:00 - -03 463 # 464 # Tucumán (TM) 465 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 466 -4:16:48 - CMT 1920 May 467 -4:00 - -04 1930 Dec 468 -4:00 Arg -04/-03 1969 Oct 5 469 -3:00 Arg -03/-02 1991 Mar 3 470 -4:00 - -04 1991 Oct 20 471 -3:00 Arg -03/-02 1999 Oct 3 472 -4:00 Arg -04/-03 2000 Mar 3 473 -3:00 - -03 2004 Jun 1 474 -4:00 - -04 2004 Jun 13 475 -3:00 Arg -03/-02 476 # 477 # La Rioja (LR) 478 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 479 -4:16:48 - CMT 1920 May 480 -4:00 - -04 1930 Dec 481 -4:00 Arg -04/-03 1969 Oct 5 482 -3:00 Arg -03/-02 1991 Mar 1 483 -4:00 - -04 1991 May 7 484 -3:00 Arg -03/-02 1999 Oct 3 485 -4:00 Arg -04/-03 2000 Mar 3 486 -3:00 - -03 2004 Jun 1 487 -4:00 - -04 2004 Jun 20 488 -3:00 Arg -03/-02 2008 Oct 18 489 -3:00 - -03 490 # 491 # San Juan (SJ) 492 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 493 -4:16:48 - CMT 1920 May 494 -4:00 - -04 1930 Dec 495 -4:00 Arg -04/-03 1969 Oct 5 496 -3:00 Arg -03/-02 1991 Mar 1 497 -4:00 - -04 1991 May 7 498 -3:00 Arg -03/-02 1999 Oct 3 499 -4:00 Arg -04/-03 2000 Mar 3 500 -3:00 - -03 2004 May 31 501 -4:00 - -04 2004 Jul 25 502 -3:00 Arg -03/-02 2008 Oct 18 503 -3:00 - -03 504 # 505 # Jujuy (JY) 506 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 507 -4:16:48 - CMT 1920 May 508 -4:00 - -04 1930 Dec 509 -4:00 Arg -04/-03 1969 Oct 5 510 -3:00 Arg -03/-02 1990 Mar 4 511 -4:00 - -04 1990 Oct 28 512 -4:00 1:00 -03 1991 Mar 17 513 -4:00 - -04 1991 Oct 6 514 -3:00 1:00 -02 1992 515 -3:00 Arg -03/-02 1999 Oct 3 516 -4:00 Arg -04/-03 2000 Mar 3 517 -3:00 Arg -03/-02 2008 Oct 18 518 -3:00 - -03 519 # 520 # Catamarca (CT), Chubut (CH) 521 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 522 -4:16:48 - CMT 1920 May 523 -4:00 - -04 1930 Dec 524 -4:00 Arg -04/-03 1969 Oct 5 525 -3:00 Arg -03/-02 1991 Mar 3 526 -4:00 - -04 1991 Oct 20 527 -3:00 Arg -03/-02 1999 Oct 3 528 -4:00 Arg -04/-03 2000 Mar 3 529 -3:00 - -03 2004 Jun 1 530 -4:00 - -04 2004 Jun 20 531 -3:00 Arg -03/-02 2008 Oct 18 532 -3:00 - -03 533 # 534 # Mendoza (MZ) 535 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 536 -4:16:48 - CMT 1920 May 537 -4:00 - -04 1930 Dec 538 -4:00 Arg -04/-03 1969 Oct 5 539 -3:00 Arg -03/-02 1990 Mar 4 540 -4:00 - -04 1990 Oct 15 541 -4:00 1:00 -03 1991 Mar 1 542 -4:00 - -04 1991 Oct 15 543 -4:00 1:00 -03 1992 Mar 1 544 -4:00 - -04 1992 Oct 18 545 -3:00 Arg -03/-02 1999 Oct 3 546 -4:00 Arg -04/-03 2000 Mar 3 547 -3:00 - -03 2004 May 23 548 -4:00 - -04 2004 Sep 26 549 -3:00 Arg -03/-02 2008 Oct 18 550 -3:00 - -03 551 # 552 # San Luis (SL) 553 554 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 555 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S 556 557 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 558 -4:16:48 - CMT 1920 May 559 -4:00 - -04 1930 Dec 560 -4:00 Arg -04/-03 1969 Oct 5 561 -3:00 Arg -03/-02 1990 562 -3:00 1:00 -02 1990 Mar 14 563 -4:00 - -04 1990 Oct 15 564 -4:00 1:00 -03 1991 Mar 1 565 -4:00 - -04 1991 Jun 1 566 -3:00 - -03 1999 Oct 3 567 -4:00 1:00 -03 2000 Mar 3 568 -3:00 - -03 2004 May 31 569 -4:00 - -04 2004 Jul 25 570 -3:00 Arg -03/-02 2008 Jan 21 571 -4:00 SanLuis -04/-03 2009 Oct 11 572 -3:00 - -03 573 # 574 # Santa Cruz (SC) 575 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 576 -4:16:48 - CMT 1920 May 577 -4:00 - -04 1930 Dec 578 -4:00 Arg -04/-03 1969 Oct 5 579 -3:00 Arg -03/-02 1999 Oct 3 580 -4:00 Arg -04/-03 2000 Mar 3 581 -3:00 - -03 2004 Jun 1 582 -4:00 - -04 2004 Jun 20 583 -3:00 Arg -03/-02 2008 Oct 18 584 -3:00 - -03 585 # 586 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) 587 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 588 -4:16:48 - CMT 1920 May 589 -4:00 - -04 1930 Dec 590 -4:00 Arg -04/-03 1969 Oct 5 591 -3:00 Arg -03/-02 1999 Oct 3 592 -4:00 Arg -04/-03 2000 Mar 3 593 -3:00 - -03 2004 May 30 594 -4:00 - -04 2004 Jun 20 595 -3:00 Arg -03/-02 2008 Oct 18 596 -3:00 - -03 597 598 # Aruba 599 Link America/Curacao America/Aruba 600 601 # Bolivia 602 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 603 Zone America/La_Paz -4:32:36 - LMT 1890 604 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 605 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 606 -4:00 - -04 607 608 # Brazil 609 610 # From Paul Eggert (1993-11-18): 611 # The mayor of Rio recently attempted to change the time zone rules 612 # just in his city, in order to leave more summer time for the tourist trade. 613 # The rule change lasted only part of the day; 614 # the federal government refused to follow the city's rules, and business 615 # was in a chaos, so the mayor backed down that afternoon. 616 617 # From IATA SSIM (1996-02): 618 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 619 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), 620 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), 621 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 622 # [The last three states are new to this issue of the IATA SSIM.] 623 624 # From Gwillim Law (1996-10-07): 625 # Geography, history (Tocantins was part of Goiás until 1989), and other 626 # sources of time zone information lead me to believe that AL, SE, and TO were 938 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 939 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 940 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 941 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 942 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 943 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 944 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 945 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 946 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 947 # From Arthur David Olson (2008-09-29): 948 # The next is wrong in some years but is better than nothing. 949 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 950 951 # The latest ruleset listed above says that the following states observe DST: 952 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 953 954 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 955 # 956 # Fernando de Noronha (administratively part of PE) 957 Zone America/Noronha -2:09:40 - LMT 1914 958 -2:00 Brazil -02/-01 1990 Sep 17 959 -2:00 - -02 1999 Sep 30 960 -2:00 Brazil -02/-01 2000 Oct 15 961 -2:00 - -02 2001 Sep 13 962 -2:00 Brazil -02/-01 2002 Oct 1 963 -2:00 - -02 964 # Other Atlantic islands have no permanent settlement. 965 # These include Trindade and Martim Vaz (administratively part of ES), 966 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 967 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 968 # it also included the Penedos. 969 # 970 # Amapá (AP), east Pará (PA) 971 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. 972 # The division between east and west Pará is the river Xingu. 973 # In the north a very small part from the river Javary (now Jari I guess, 974 # the border with Amapá) to the Amazon, then to the Xingu. 975 Zone America/Belem -3:13:56 - LMT 1914 976 -3:00 Brazil -03/-02 1988 Sep 12 977 -3:00 - -03 978 # 979 # west Pará (PA) 980 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. 981 Zone America/Santarem -3:38:48 - LMT 1914 982 -4:00 Brazil -04/-03 1988 Sep 12 983 -4:00 - -04 2008 Jun 24 0:00 984 -3:00 - -03 985 # 986 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), 987 # Paraíba (PB) 988 Zone America/Fortaleza -2:34:00 - LMT 1914 989 -3:00 Brazil -03/-02 1990 Sep 17 990 -3:00 - -03 1999 Sep 30 991 -3:00 Brazil -03/-02 2000 Oct 22 992 -3:00 - -03 2001 Sep 13 993 -3:00 Brazil -03/-02 2002 Oct 1 994 -3:00 - -03 995 # 996 # Pernambuco (PE) (except Atlantic islands) 997 Zone America/Recife -2:19:36 - LMT 1914 998 -3:00 Brazil -03/-02 1990 Sep 17 999 -3:00 - -03 1999 Sep 30 1000 -3:00 Brazil -03/-02 2000 Oct 15 1001 -3:00 - -03 2001 Sep 13 1002 -3:00 Brazil -03/-02 2002 Oct 1 1003 -3:00 - -03 1004 # 1005 # Tocantins (TO) 1006 Zone America/Araguaina -3:12:48 - LMT 1914 1007 -3:00 Brazil -03/-02 1990 Sep 17 1008 -3:00 - -03 1995 Sep 14 1009 -3:00 Brazil -03/-02 2003 Sep 24 1010 -3:00 - -03 2012 Oct 21 1011 -3:00 Brazil -03/-02 2013 Sep 1012 -3:00 - -03 1013 # 1014 # Alagoas (AL), Sergipe (SE) 1015 Zone America/Maceio -2:22:52 - LMT 1914 1016 -3:00 Brazil -03/-02 1990 Sep 17 1017 -3:00 - -03 1995 Oct 13 1018 -3:00 Brazil -03/-02 1996 Sep 4 1019 -3:00 - -03 1999 Sep 30 1020 -3:00 Brazil -03/-02 2000 Oct 22 1021 -3:00 - -03 2001 Sep 13 1022 -3:00 Brazil -03/-02 2002 Oct 1 1023 -3:00 - -03 1024 # 1025 # Bahia (BA) 1026 # There are too many Salvadors elsewhere, so use America/Bahia instead 1027 # of America/Salvador. 1028 Zone America/Bahia -2:34:04 - LMT 1914 1029 -3:00 Brazil -03/-02 2003 Sep 24 1030 -3:00 - -03 2011 Oct 16 1031 -3:00 Brazil -03/-02 2012 Oct 21 1032 -3:00 - -03 1033 # 1034 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), 1035 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), 1036 # Santa Catarina (SC), Rio Grande do Sul (RS) 1037 Zone America/Sao_Paulo -3:06:28 - LMT 1914 1038 -3:00 Brazil -03/-02 1963 Oct 23 0:00 1039 -3:00 1:00 -02 1964 1040 -3:00 Brazil -03/-02 1041 # 1042 # Mato Grosso do Sul (MS) 1043 Zone America/Campo_Grande -3:38:28 - LMT 1914 1044 -4:00 Brazil -04/-03 1045 # 1046 # Mato Grosso (MT) 1047 Zone America/Cuiaba -3:44:20 - LMT 1914 1048 -4:00 Brazil -04/-03 2003 Sep 24 1049 -4:00 - -04 2004 Oct 1 1050 -4:00 Brazil -04/-03 1051 # 1052 # Rondônia (RO) 1053 Zone America/Porto_Velho -4:15:36 - LMT 1914 1054 -4:00 Brazil -04/-03 1988 Sep 12 1055 -4:00 - -04 1056 # 1057 # Roraima (RR) 1058 Zone America/Boa_Vista -4:02:40 - LMT 1914 1059 -4:00 Brazil -04/-03 1988 Sep 12 1060 -4:00 - -04 1999 Sep 30 1061 -4:00 Brazil -04/-03 2000 Oct 15 1062 -4:00 - -04 1063 # 1064 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto 1065 # The great circle line from Tabatinga to Porto Acre divides 1066 # east from west Amazonas. 1067 Zone America/Manaus -4:00:04 - LMT 1914 1068 -4:00 Brazil -04/-03 1988 Sep 12 1069 -4:00 - -04 1993 Sep 28 1070 -4:00 Brazil -04/-03 1994 Sep 22 1071 -4:00 - -04 1072 # 1073 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1074 # Eirunepé, Envira, Ipixuna 1075 Zone America/Eirunepe -4:39:28 - LMT 1914 1076 -5:00 Brazil -05/-04 1988 Sep 12 1077 -5:00 - -05 1993 Sep 28 1078 -5:00 Brazil -05/-04 1994 Sep 22 1079 -5:00 - -05 2008 Jun 24 0:00 1080 -4:00 - -04 2013 Nov 10 1081 -5:00 - -05 1082 # 1083 # Acre (AC) 1084 Zone America/Rio_Branco -4:31:12 - LMT 1914 1085 -5:00 Brazil -05/-04 1988 Sep 12 1086 -5:00 - -05 2008 Jun 24 0:00 1087 -4:00 - -04 2013 Nov 10 1088 -5:00 - -05 1089 1090 # Chile 1091 1092 # From Paul Eggert (2015-04-03): 1093 # Shanks & Pottenger says America/Santiago introduced standard time in 1094 # 1890 and rounds its UTC offset to 70W40; guess that in practice this 1095 # was the same offset as in 1916-1919. It also says Pacific/Easter 1096 # standardized on 109W22 in 1890; assume this didn't change the clocks. 1097 # 1098 # Dates for America/Santiago from 1910 to 2004 are primarily from 1099 # the following source, cited by Oscar van Vlijmen (2006-10-08): 1100 # [1] Chile Law 1101 # http://www.webexhibits.org/daylightsaving/chile.html 1102 # This contains a copy of a this official table: 1103 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) 1104 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm 1105 # [1] needs several corrections, though. 1106 # 1107 # The first set of corrections is from: 1108 # [2] History of the Official Time of Chile 1213 # permanently until March 25 of 2017 1214 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg 1215 # 1216 # From Paul Eggert (2015-03-03): 1217 # For now, assume that the extension will persist indefinitely. 1218 1219 # From Juan Correa (2016-03-18): 1220 # The decree regarding DST has been published in today's Official Gazette: 1221 # http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/ 1222 # http://www.leychile.cl/Navegar?idNorma=1088502 1223 # It does consider the second Saturday of May and August as the dates 1224 # for the transition; and it lists DST dates until 2019, but I think 1225 # this scheme will stick. 1226 # 1227 # From Paul Eggert (2016-03-18): 1228 # For now, assume the pattern holds for the indefinite future. 1229 # The decree says transitions occur at 24:00; in practice this appears 1230 # to mean 24:00 mainland time, not 24:00 local time, so that Easter 1231 # Island is always two hours behind the mainland. 1232 1233 # From Juan Correa (2016-12-04): 1234 # Magallanes region ... will keep DST (UTC -3) all year round.... 1235 # 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 1236 # 1237 # From Deborah Goldsmith (2017-01-19): 1238 # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf 1239 # From Paul Eggert (2017-01-19): 1240 # The above says the Magallanes change expires 2019-05-11 at 24:00, 1241 # so in theory, they will revert to -04/-03 after that, which means 1242 # they will switch from -03 to -04 one hour after Santiago does that day. 1243 # For now, assume that they will not revert. 1244 1245 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1246 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 1247 Rule Chile 1928 1932 - Apr 1 0:00 0 - 1248 Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1249 Rule Chile 1969 only - Mar 30 3:00u 0 - 1250 Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1251 Rule Chile 1970 only - Mar 29 3:00u 0 - 1252 Rule Chile 1971 only - Mar 14 3:00u 0 - 1253 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1254 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1255 Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1256 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1257 Rule Chile 1987 only - Apr 12 3:00u 0 - 1258 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - 1259 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S 1260 Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1261 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1262 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1263 Rule Chile 1997 only - Mar 30 3:00u 0 - 1264 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1265 Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1266 Rule Chile 1999 only - Apr 4 3:00u 0 - 1267 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1268 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1269 # N.B.: the end of March 29 in Chile is March 30 in Universal time, 1270 # which is used below in specifying the transition. 1271 Rule Chile 2008 only - Mar 30 3:00u 0 - 1272 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1273 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1274 Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1275 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1276 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - 1277 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S 1278 Rule Chile 2016 max - May Sun>=9 3:00u 0 - 1279 Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S 1280 # IATA SSIM anomalies: (1992-02) says 1992-03-14; 1281 # (1996-09) says 1998-03-08. Ignore these. 1282 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1283 Zone America/Santiago -4:42:46 - LMT 1890 1284 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time 1285 -5:00 - -05 1916 Jul 1 1286 -4:42:46 - SMT 1918 Sep 10 1287 -4:00 - -04 1919 Jul 1 1288 -4:42:46 - SMT 1927 Sep 1 1289 -5:00 Chile -05/-04 1932 Sep 1 1290 -4:00 - -04 1942 Jun 1 1291 -5:00 - -05 1942 Aug 1 1292 -4:00 - -04 1946 Jul 15 1293 -4:00 1:00 -03 1946 Sep 1 # central Chile 1294 -4:00 - -04 1947 Apr 1 1295 -5:00 - -05 1947 May 21 23:00 1296 -4:00 Chile -04/-03 1297 Zone America/Punta_Arenas -4:43:40 - LMT 1890 1298 -4:42:46 - SMT 1910 Jan 10 1299 -5:00 - -05 1916 Jul 1 1300 -4:42:46 - SMT 1918 Sep 10 1301 -4:00 - -04 1919 Jul 1 1302 -4:42:46 - SMT 1927 Sep 1 1303 -5:00 Chile -05/-04 1932 Sep 1 1304 -4:00 - -04 1942 Jun 1 1305 -5:00 - -05 1942 Aug 1 1306 -4:00 - -04 1947 Apr 1 1307 -5:00 - -05 1947 May 21 23:00 1308 -4:00 Chile -04/-03 2016 Dec 4 1309 -3:00 - -03 1310 Zone Pacific/Easter -7:17:28 - LMT 1890 1311 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1312 -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time 1313 -6:00 Chile -06/-05 1314 # 1315 # Salas y Gómez Island is uninhabited. 1316 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, 1317 # and Antarctic bases, are like America/Santiago. 1318 1319 # Antarctic base using South American rules 1320 # (See the file 'antarctica' for more.) 1321 # 1322 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 1323 # 1324 # From Ethan Dicks (1996-10-06): 1325 # It keeps the same time as Punta Arenas, Chile, because, just like us 1326 # and the South Pole, that's the other end of their supply line.... 1327 # I verified with someone who was there that since 1980, 1328 # Palmer has followed Chile. Prior to that, before the Falklands War, 1329 # Palmer used to be supplied from Argentina. 1330 # 1331 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1332 Zone Antarctica/Palmer 0 - -00 1965 1333 -4:00 Arg -04/-03 1969 Oct 5 1334 -3:00 Arg -03/-02 1982 May 1335 -4:00 Chile -04/-03 2016 Dec 4 1336 -3:00 - -03 1337 1338 # Colombia 1339 1340 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, 1341 # "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1342 1343 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1344 Rule CO 1992 only - May 3 0:00 1:00 S 1345 Rule CO 1993 only - Apr 4 0:00 0 - 1346 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1347 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 1348 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time 1349 -5:00 CO -05/-04 1350 # Malpelo, Providencia, San Andres 1351 # no information; probably like America/Bogota 1352 1353 # Curaçao 1354 1355 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. 1356 # 1357 # From Paul Eggert (2006-03-22): 1358 # Shanks & Pottenger say that The Bottom and Philipsburg have been at 1359 # -4:00 since standard time was introduced on 1912-03-02; and that 1360 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1361 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1362 # Saba Island has been like Curaçao. 1363 # This all predates our 1970 cutoff, though. 1364 # 1365 # By July 2007 Curaçao and St Maarten are planned to become 1366 # associated states within the Netherlands, much like Aruba; 1367 # Bonaire, Saba and St Eustatius would become directly part of the 1368 # Netherlands as Kingdom Islands. This won't affect their time zones 1369 # though, as far as we know. 1370 # 1371 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1372 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 1373 -4:30 - -0430 1965 1374 -4:00 - AST 1375 1376 # From Arthur David Olson (2011-06-15): 1377 # use links for places with new iso3166 codes. 1378 # The name "Lower Prince's Quarter" is both longer than fourteen characters 1379 # and contains an apostrophe; use "Lower_Princes" below. 1380 1381 Link America/Curacao America/Lower_Princes # Sint Maarten 1382 Link America/Curacao America/Kralendijk # Caribbean Netherlands 1383 1384 # Ecuador 1385 # 1386 # Milne says the Central and South American Telegraph Company used -5:24:15. 1387 # 1388 # From Alois Treindl (2016-12-15): 1389 # http://www.elcomercio.com/actualidad/hora-sixto-1993.html 1390 # ... Whether the law applied also to Galápagos, I do not know. 1391 # From Paul Eggert (2016-12-15): 1392 # http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html 1393 # This says President Sixto Durán Ballén signed decree No. 285, which 1394 # established DST from 1992-11-28 to 1993-02-05; it does not give transition 1395 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did 1396 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics 1397 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin 1398 # sol" ("It was dawning in the middle of the night, the buses went to class 1399 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás" 1400 # (Not one step back), the clocks went back in 1993 and the experiment was not 1401 # repeated. For now, assume transitions were at 00:00 local time country-wide. 1402 # 1403 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1404 Rule Ecuador 1992 only - Nov 28 0:00 1:00 S 1405 Rule Ecuador 1993 only - Feb 5 0:00 0 - 1406 # 1407 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1408 Zone America/Guayaquil -5:19:20 - LMT 1890 1409 -5:14:00 - QMT 1931 # Quito Mean Time 1410 -5:00 Ecuador -05/-04 1411 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1412 -5:00 - -05 1986 1413 -6:00 Ecuador -06/-05 1414 1415 # Falklands 1416 1417 # From Paul Eggert (2006-03-22): 1418 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1419 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1420 1421 # From Falkland Islands Government Office, London (2001-01-22) 1422 # via Jesper Nørgaard: 1423 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1424 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 1425 # September. It is anticipated that the clocks will revert back at 2 1426 # am on Sunday 21 April 2002 and advance to summer time at 2 am on 1427 # Sunday 1 September. 1428 1429 # From Rives McDow (2001-02-13): 1430 # 1431 # I have communicated several times with people there, and the last 1432 # time I had communications that was helpful was in 1998. Here is 1433 # what was said then: 1493 # 1494 # For now we will assume permanent summer time for the Falklands 1495 # until advised differently (to apply for 2012 and beyond, after the 2011 1496 # experiment was apparently successful.) 1497 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1498 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1499 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1500 Rule Falk 1939 only - Oct 1 0:00 1:00 S 1501 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1502 Rule Falk 1943 only - Jan 1 0:00 0 - 1503 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1504 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1505 Rule Falk 1984 only - Sep 16 0:00 1:00 S 1506 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1507 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1508 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1509 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1510 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1511 Zone Atlantic/Stanley -3:51:24 - LMT 1890 1512 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1513 -4:00 Falk -04/-03 1983 May 1514 -3:00 Falk -03/-02 1985 Sep 15 1515 -4:00 Falk -04/-03 2010 Sep 5 2:00 1516 -3:00 - -03 1517 1518 # French Guiana 1519 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1520 Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1521 -4:00 - -04 1967 Oct 1522 -3:00 - -03 1523 1524 # Guyana 1525 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1526 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1527 -3:45 - -0345 1975 Jul 31 1528 -3:00 - -03 1991 1529 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1530 -4:00 - -04 1531 1532 # Paraguay 1533 # 1534 # From Paul Eggert (2006-03-22): 1535 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 1536 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999 1537 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1538 # 1539 # From Waldemar Villamayor-Venialbo (2013-09-20): 1540 # No time of the day is established for the adjustment, so people normally 1541 # adjust their clocks at 0 hour of the given dates. 1542 # 1543 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1544 Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1545 Rule Para 1975 1978 - Mar 1 0:00 0 - 1546 Rule Para 1979 1991 - Apr 1 0:00 0 - 1547 Rule Para 1989 only - Oct 22 0:00 1:00 S 1548 Rule Para 1990 only - Oct 1 0:00 1:00 S 1549 Rule Para 1991 only - Oct 6 0:00 1:00 S 1550 Rule Para 1992 only - Mar 1 0:00 0 - 1602 # forward 60 minutes, in all the territory of the Paraguayan Republic. 1603 # ... 1604 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1605 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1606 # 1607 # From Steffen Thorsen (2013-03-07): 1608 # Paraguay will end DST on 2013-03-24 00:00.... 1609 # http://www.ande.gov.py/interna.php?id=1075 1610 # 1611 # From Carlos Raúl Perasso (2013-03-15): 1612 # The change in Paraguay is now final. Decree number 10780 1613 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 1614 # From Carlos Raúl Perasso (2014-02-28): 1615 # Decree 1264 can be found at: 1616 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1617 Rule Para 2013 max - Mar Sun>=22 0:00 0 - 1618 1619 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1620 Zone America/Asuncion -3:50:40 - LMT 1890 1621 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time 1622 -4:00 - -04 1972 Oct 1623 -3:00 - -03 1974 Apr 1624 -4:00 Para -04/-03 1625 1626 # Peru 1627 # 1628 # From Evelyn C. Leeper via Mark Brader (2003-10-26) 1629 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>: 1630 # When we were in Peru in 1985-1986, they apparently switched over 1631 # sometime between December 29 and January 3 while we were on the Amazon. 1632 # 1633 # From Paul Eggert (2006-03-22): 1634 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1635 1636 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1637 Rule Peru 1938 only - Jan 1 0:00 1:00 S 1638 Rule Peru 1938 only - Apr 1 0:00 0 - 1639 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1640 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1641 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1642 Rule Peru 1986 1987 - Apr 1 0:00 0 - 1643 Rule Peru 1990 only - Jan 1 0:00 1:00 S 1644 Rule Peru 1990 only - Apr 1 0:00 0 - 1645 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1646 Rule Peru 1994 only - Jan 1 0:00 1:00 S 1647 Rule Peru 1994 only - Apr 1 0:00 0 - 1648 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1649 Zone America/Lima -5:08:12 - LMT 1890 1650 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1651 -5:00 Peru -05/-04 1652 1653 # South Georgia 1654 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1655 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1656 -2:00 - -02 1657 1658 # South Sandwich Is 1659 # uninhabited; scientific personnel have wintered 1660 1661 # Suriname 1662 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1663 Zone America/Paramaribo -3:40:40 - LMT 1911 1664 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1665 -3:40:36 - PMT 1945 Oct # The capital moved? 1666 -3:30 - -0330 1984 Oct 1667 -3:00 - -03 1668 1669 # Trinidad and Tobago 1670 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1671 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1672 -4:00 - AST 1673 1674 # These all agree with Trinidad and Tobago since 1970. 1675 Link America/Port_of_Spain America/Anguilla 1676 Link America/Port_of_Spain America/Antigua 1677 Link America/Port_of_Spain America/Dominica 1678 Link America/Port_of_Spain America/Grenada 1679 Link America/Port_of_Spain America/Guadeloupe 1680 Link America/Port_of_Spain America/Marigot # St Martin (French part) 1681 Link America/Port_of_Spain America/Montserrat 1682 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy 1683 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis 1684 Link America/Port_of_Spain America/St_Lucia 1685 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) 1686 Link America/Port_of_Spain America/St_Vincent 1687 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) 1750 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1751 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1752 # 02:00 local time, official time in Uruguay will be at GMT -2. 1753 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1754 Rule Uruguay 2006 only - Mar 12 2:00 0 - 1755 # From Jesper Nørgaard Welen (2006-09-06): 1756 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1757 # 1758 # From Steffen Thorsen (2015-06-30): 1759 # ... it looks like they will not be using DST the coming summer: 1760 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 1761 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ 1762 # From Paul Eggert (2015-06-30): 1763 # Apparently restaurateurs complained that DST caused people to go to the beach 1764 # instead of out to dinner. 1765 # From Pablo Camargo (2015-07-13): 1766 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf 1767 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04] 1768 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S 1769 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 - 1770 1771 # This Zone can be simplified once we assume zic %z. 1772 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1773 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1774 -3:30 Uruguay -0330/-03 1942 Dec 14 1775 -3:00 Uruguay -03/-02 1968 1776 -3:00 Uruguay -03/-0230 1971 1777 -3:00 Uruguay -03/-02 1974 1778 -3:00 Uruguay -03/-0230 1974 Dec 22 1779 -3:00 Uruguay -03/-02 1780 1781 # Venezuela 1782 # 1783 # From Paul Eggert (2015-07-28): 1784 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 1785 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf 1786 # 1787 # From John Stainforth (2007-11-28): 1788 # ... the change for Venezuela originally expected for 2007-12-31 has 1789 # been brought forward to 2007-12-09. The official announcement was 1790 # published today in the "Gaceta Oficial de la República Bolivariana 1791 # de Venezuela, número 38.819" (official document for all laws or 1792 # resolution publication) 1793 # http://www.globovision.com/news.php?nid=72208 1794 1795 # From Alexander Krivenyshev (2016-04-15): 1796 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino 1797 # 1798 # From Paul Eggert (2016-04-15): 1799 # Clocks advance 30 minutes on 2016-05-01 at 02:30.... 1800 # "'Venezuela's new time-zone: hours without light, hours without water, 1801 # hours of presidential broadcasts, hours of lines,' quipped comedian 1802 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps 1803 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 1804 # http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE 1805 # 1806 # From Matt Johnson (2016-04-20): 1807 # ... published in the official Gazette [2016-04-18], here: 1808 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf 1809 1810 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1811 Zone America/Caracas -4:27:44 - LMT 1890 1812 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1813 -4:30 - -0430 1965 Jan 1 0:00 1814 -4:00 - -04 2007 Dec 9 3:00 1815 -4:30 - -0430 2016 May 1 2:30 1816 -4:00 - -04 |