1 # This file is in the public domain, so clarified as of
2 # 2009-05-17 by Arthur David Olson.
3
4 # This file is by no means authoritative; if you think you know better,
5 # go ahead and edit the file (and please send any changes to
6 # tz@iana.org for general use in the future). For more, please see
7 # the file CONTRIBUTING in the tz distribution.
8
9 # From Paul Eggert (2014-10-31):
10 #
11 # Unless otherwise specified, the source for data through 1990 is:
12 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
15 #
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
22 #
23 # For data circa 1899, a common source is:
24 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25 # http://www.jstor.org/stable/1774359
26 #
27 # Earlier editions of these tables used the North American style (e.g. ARST and
28 # ARDT for Argentine Standard and Daylight Time), but the following quote
29 # suggests that it's better to use European style (e.g. ART and ARST).
30 # I suggest the use of _Summer time_ instead of the more cumbersome
31 # _daylight-saving time_. _Summer time_ seems to be in general use
32 # in Europe and South America.
33 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in
34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466
35 #
36 # Earlier editions of these tables also used the North American style
37 # for time zones in Brazil, but this was incorrect, as Brazilians say
38 # "summer time". Reinaldo Goulart, a São Paulo businessman active in
39 # the railroad sector, writes (1999-07-06):
40 # The subject of time zones is currently a matter of discussion/debate in
41 # Brazil. Let's say that "the Brasília time" is considered the
42 # "official time" because Brasília is the capital city.
43 # The other three time zones are called "Brasília time "minus one" or
44 # "plus one" or "plus two". As far as I know there is no such
45 # name/designation as "Eastern Time" or "Central Time".
46 # So I invented the following (English-language) abbreviations for now.
47 # Corrections are welcome!
48 # std dst
49 # -2:00 FNT FNST Fernando de Noronha
50 # -3:00 BRT BRST Brasília
51 # -4:00 AMT AMST Amazon
52 # -5:00 ACT ACST Acre
53
54 ###############################################################################
55
56 ###############################################################################
57
58 # Argentina
59
60 # From Bob Devine (1988-01-28):
61 # Argentina: first Sunday in October to first Sunday in April since 1976.
62 # Double Summer time from 1969 to 1974. Switches at midnight.
63
64 # From U. S. Naval Observatory (1988-01-19):
65 # ARGENTINA 3 H BEHIND UTC
66
67 # From Hernan G. Otero (1995-06-26):
68 # I am sending modifications to the Argentine time zone table...
69 # AR was chosen because they are the ISO letters that represent Argentina.
70
71 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
72 Rule Arg 1930 only - Dec 1 0:00 1:00 S
367 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
368 # is ambiguous because establishes a calendar from the 2nd Sunday in
369 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the
370 # complement of that starting on the 2nd Sunday of March at 0:00 and
371 # ending on the 2nd Saturday of March at 24:00.
372 #
373 # This clearly breaks every time the 1st of March or October is a Sunday.
374 #
375 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
376 # Sunday of October and March.
377 #
378 # The problem is that the changes in the rest of the Provinces that did
379 # change in 2007/2008, were made according to the Federal Law and Decrees
380 # that did so on the 3rd Sunday of October and March.
381 #
382 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
383 # (October 11th) at 0:00.
384 #
385 # So I guess a new set of rules, besides "Arg", must be made and the last
386 # America/Argentina/San_Luis entries should change to use these...
387 #
388 # I'm enclosing a patch that does what I say... regretfully, the San Luis
389 # timezone must be called "WART/WARST" even when most of the time (like,
390 # right now) WARST == ART... that is, since last Sunday, all the country
391 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
392 # of the country calls it "ART".
393 # ...
394
395 # From Alexander Krivenyshev (2010-04-09):
396 # According to news reports from El Diario de la República Province San
397 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
398 # after April 11, 2010 - will continue to have same time as rest of
399 # Argentina (UTC-3) (no DST).
400 #
401 # Confirmaron la prórroga del huso horario de verano (Spanish)
402 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
403 # or (some English translation):
404 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
405
406 # From Mariano Absatz (2010-04-12):
407 # yes...I can confirm this...and given that San Luis keeps calling
408 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
409 # rules...San Luis is still using "Western ARgentina Time" and it got
410 # stuck on Summer daylight savings time even though the summer is over.
411
412 # From Paul Eggert (2013-09-05):
413 # Perhaps San Luis operates on the legal fiction that it is at -04
414 # with perpetual summer time, but ordinary usage typically seems to
415 # just say it's at -03; see, for example,
416 # http://es.wikipedia.org/wiki/Hora_oficial_argentina
417 # We've documented similar situations as being plain changes to
418 # standard time, so let's do that here too. This does not change UTC
419 # offsets, only tm_isdst and the time zone abbreviations. One minor
420 # plus is that this silences a zic complaint that there's no POSIX TZ
421 # setting for time stamps past 2038.
422
423 # From Paul Eggert (2013-02-21):
424 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
425
426 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
427 #
428 # Buenos Aires (BA), Capital Federal (CF),
429 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
430 -4:16:48 - CMT 1920 May # Córdoba Mean Time
431 -4:00 - ART 1930 Dec
432 -4:00 Arg AR%sT 1969 Oct 5
433 -3:00 Arg AR%sT 1999 Oct 3
434 -4:00 Arg AR%sT 2000 Mar 3
435 -3:00 Arg AR%sT
436 #
437 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
438 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
439 #
440 # Shanks & Pottenger also make the following claims, which we haven't verified:
441 # - Formosa switched to -3:00 on 1991-01-07.
442 # - Misiones switched to -3:00 on 1990-12-29.
443 # - Chaco switched to -3:00 on 1991-01-04.
444 # - Santiago del Estero switched to -4:00 on 1991-04-01,
445 # then to -3:00 on 1991-04-26.
446 #
447 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
448 -4:16:48 - CMT 1920 May
449 -4:00 - ART 1930 Dec
450 -4:00 Arg AR%sT 1969 Oct 5
451 -3:00 Arg AR%sT 1991 Mar 3
452 -4:00 - WART 1991 Oct 20
453 -3:00 Arg AR%sT 1999 Oct 3
454 -4:00 Arg AR%sT 2000 Mar 3
455 -3:00 Arg AR%sT
456 #
457 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
458 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
459 -4:16:48 - CMT 1920 May
460 -4:00 - ART 1930 Dec
461 -4:00 Arg AR%sT 1969 Oct 5
462 -3:00 Arg AR%sT 1991 Mar 3
463 -4:00 - WART 1991 Oct 20
464 -3:00 Arg AR%sT 1999 Oct 3
465 -4:00 Arg AR%sT 2000 Mar 3
466 -3:00 Arg AR%sT 2008 Oct 18
467 -3:00 - ART
468 #
469 # Tucumán (TM)
470 Zone America/Argentina/Tucuman -4:20:52 - 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 - ART 2004 Jun 1
479 -4:00 - WART 2004 Jun 13
480 -3:00 Arg AR%sT
481 #
482 # La Rioja (LR)
483 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
484 -4:16:48 - CMT 1920 May
485 -4:00 - ART 1930 Dec
486 -4:00 Arg AR%sT 1969 Oct 5
487 -3:00 Arg AR%sT 1991 Mar 1
488 -4:00 - WART 1991 May 7
489 -3:00 Arg AR%sT 1999 Oct 3
490 -4:00 Arg AR%sT 2000 Mar 3
491 -3:00 - ART 2004 Jun 1
492 -4:00 - WART 2004 Jun 20
493 -3:00 Arg AR%sT 2008 Oct 18
494 -3:00 - ART
495 #
496 # San Juan (SJ)
497 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31
498 -4:16:48 - CMT 1920 May
499 -4:00 - ART 1930 Dec
500 -4:00 Arg AR%sT 1969 Oct 5
501 -3:00 Arg AR%sT 1991 Mar 1
502 -4:00 - WART 1991 May 7
503 -3:00 Arg AR%sT 1999 Oct 3
504 -4:00 Arg AR%sT 2000 Mar 3
505 -3:00 - ART 2004 May 31
506 -4:00 - WART 2004 Jul 25
507 -3:00 Arg AR%sT 2008 Oct 18
508 -3:00 - ART
509 #
510 # Jujuy (JY)
511 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31
512 -4:16:48 - CMT 1920 May
513 -4:00 - ART 1930 Dec
514 -4:00 Arg AR%sT 1969 Oct 5
515 -3:00 Arg AR%sT 1990 Mar 4
516 -4:00 - WART 1990 Oct 28
517 -4:00 1:00 WARST 1991 Mar 17
518 -4:00 - WART 1991 Oct 6
519 -3:00 1:00 ARST 1992
520 -3:00 Arg AR%sT 1999 Oct 3
521 -4:00 Arg AR%sT 2000 Mar 3
522 -3:00 Arg AR%sT 2008 Oct 18
523 -3:00 - ART
524 #
525 # Catamarca (CT), Chubut (CH)
526 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
527 -4:16:48 - CMT 1920 May
528 -4:00 - ART 1930 Dec
529 -4:00 Arg AR%sT 1969 Oct 5
530 -3:00 Arg AR%sT 1991 Mar 3
531 -4:00 - WART 1991 Oct 20
532 -3:00 Arg AR%sT 1999 Oct 3
533 -4:00 Arg AR%sT 2000 Mar 3
534 -3:00 - ART 2004 Jun 1
535 -4:00 - WART 2004 Jun 20
536 -3:00 Arg AR%sT 2008 Oct 18
537 -3:00 - ART
538 #
539 # Mendoza (MZ)
540 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31
541 -4:16:48 - CMT 1920 May
542 -4:00 - ART 1930 Dec
543 -4:00 Arg AR%sT 1969 Oct 5
544 -3:00 Arg AR%sT 1990 Mar 4
545 -4:00 - WART 1990 Oct 15
546 -4:00 1:00 WARST 1991 Mar 1
547 -4:00 - WART 1991 Oct 15
548 -4:00 1:00 WARST 1992 Mar 1
549 -4:00 - WART 1992 Oct 18
550 -3:00 Arg AR%sT 1999 Oct 3
551 -4:00 Arg AR%sT 2000 Mar 3
552 -3:00 - ART 2004 May 23
553 -4:00 - WART 2004 Sep 26
554 -3:00 Arg AR%sT 2008 Oct 18
555 -3:00 - ART
556 #
557 # San Luis (SL)
558
559 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
560 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S
561
562 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
563 -4:16:48 - CMT 1920 May
564 -4:00 - ART 1930 Dec
565 -4:00 Arg AR%sT 1969 Oct 5
566 -3:00 Arg AR%sT 1990
567 -3:00 1:00 ARST 1990 Mar 14
568 -4:00 - WART 1990 Oct 15
569 -4:00 1:00 WARST 1991 Mar 1
570 -4:00 - WART 1991 Jun 1
571 -3:00 - ART 1999 Oct 3
572 -4:00 1:00 WARST 2000 Mar 3
573 -3:00 - ART 2004 May 31
574 -4:00 - WART 2004 Jul 25
575 -3:00 Arg AR%sT 2008 Jan 21
576 -4:00 SanLuis WAR%sT 2009 Oct 11
577 -3:00 - ART
578 #
579 # Santa Cruz (SC)
580 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
581 -4:16:48 - CMT 1920 May # Córdoba Mean Time
582 -4:00 - ART 1930 Dec
583 -4:00 Arg AR%sT 1969 Oct 5
584 -3:00 Arg AR%sT 1999 Oct 3
585 -4:00 Arg AR%sT 2000 Mar 3
586 -3:00 - ART 2004 Jun 1
587 -4:00 - WART 2004 Jun 20
588 -3:00 Arg AR%sT 2008 Oct 18
589 -3:00 - ART
590 #
591 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
592 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
593 -4:16:48 - CMT 1920 May # Córdoba Mean Time
594 -4:00 - ART 1930 Dec
595 -4:00 Arg AR%sT 1969 Oct 5
596 -3:00 Arg AR%sT 1999 Oct 3
597 -4:00 Arg AR%sT 2000 Mar 3
598 -3:00 - ART 2004 May 30
599 -4:00 - WART 2004 Jun 20
600 -3:00 Arg AR%sT 2008 Oct 18
601 -3:00 - ART
602
603 # Aruba
604 Link America/Curacao America/Aruba
605
606 # Bolivia
607 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
608 Zone America/La_Paz -4:32:36 - LMT 1890
609 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
610 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
611 -4:00 - BOT # Bolivia Time
612
613 # Brazil
614
615 # From Paul Eggert (1993-11-18):
616 # The mayor of Rio recently attempted to change the time zone rules
617 # just in his city, in order to leave more summer time for the tourist trade.
618 # The rule change lasted only part of the day;
619 # the federal government refused to follow the city's rules, and business
620 # was in a chaos, so the mayor backed down that afternoon.
621
622 # From IATA SSIM (1996-02):
623 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
624 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
625 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
626 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
627 # [The last three states are new to this issue of the IATA SSIM.]
628
629 # From Gwillim Law (1996-10-07):
630 # Geography, history (Tocantins was part of Goiás until 1989), and other
631 # sources of time zone information lead me to believe that AL, SE, and TO were
943 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
944 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
945 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
946 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
947 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
948 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
949 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
950 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
951 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
952 # From Arthur David Olson (2008-09-29):
953 # The next is wrong in some years but is better than nothing.
954 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
955
956 # The latest ruleset listed above says that the following states observe DST:
957 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
958
959 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
960 #
961 # Fernando de Noronha (administratively part of PE)
962 Zone America/Noronha -2:09:40 - LMT 1914
963 -2:00 Brazil FN%sT 1990 Sep 17
964 -2:00 - FNT 1999 Sep 30
965 -2:00 Brazil FN%sT 2000 Oct 15
966 -2:00 - FNT 2001 Sep 13
967 -2:00 Brazil FN%sT 2002 Oct 1
968 -2:00 - FNT
969 # Other Atlantic islands have no permanent settlement.
970 # These include Trindade and Martim Vaz (administratively part of ES),
971 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
972 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
973 # it also included the Penedos.
974 #
975 # Amapá (AP), east Pará (PA)
976 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
977 # The division between east and west Pará is the river Xingu.
978 # In the north a very small part from the river Javary (now Jari I guess,
979 # the border with Amapá) to the Amazon, then to the Xingu.
980 Zone America/Belem -3:13:56 - LMT 1914
981 -3:00 Brazil BR%sT 1988 Sep 12
982 -3:00 - BRT
983 #
984 # west Pará (PA)
985 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
986 Zone America/Santarem -3:38:48 - LMT 1914
987 -4:00 Brazil AM%sT 1988 Sep 12
988 -4:00 - AMT 2008 Jun 24 0:00
989 -3:00 - BRT
990 #
991 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
992 # Paraíba (PB)
993 Zone America/Fortaleza -2:34:00 - LMT 1914
994 -3:00 Brazil BR%sT 1990 Sep 17
995 -3:00 - BRT 1999 Sep 30
996 -3:00 Brazil BR%sT 2000 Oct 22
997 -3:00 - BRT 2001 Sep 13
998 -3:00 Brazil BR%sT 2002 Oct 1
999 -3:00 - BRT
1000 #
1001 # Pernambuco (PE) (except Atlantic islands)
1002 Zone America/Recife -2:19:36 - LMT 1914
1003 -3:00 Brazil BR%sT 1990 Sep 17
1004 -3:00 - BRT 1999 Sep 30
1005 -3:00 Brazil BR%sT 2000 Oct 15
1006 -3:00 - BRT 2001 Sep 13
1007 -3:00 Brazil BR%sT 2002 Oct 1
1008 -3:00 - BRT
1009 #
1010 # Tocantins (TO)
1011 Zone America/Araguaina -3:12:48 - LMT 1914
1012 -3:00 Brazil BR%sT 1990 Sep 17
1013 -3:00 - BRT 1995 Sep 14
1014 -3:00 Brazil BR%sT 2003 Sep 24
1015 -3:00 - BRT 2012 Oct 21
1016 -3:00 Brazil BR%sT 2013 Sep
1017 -3:00 - BRT
1018 #
1019 # Alagoas (AL), Sergipe (SE)
1020 Zone America/Maceio -2:22:52 - LMT 1914
1021 -3:00 Brazil BR%sT 1990 Sep 17
1022 -3:00 - BRT 1995 Oct 13
1023 -3:00 Brazil BR%sT 1996 Sep 4
1024 -3:00 - BRT 1999 Sep 30
1025 -3:00 Brazil BR%sT 2000 Oct 22
1026 -3:00 - BRT 2001 Sep 13
1027 -3:00 Brazil BR%sT 2002 Oct 1
1028 -3:00 - BRT
1029 #
1030 # Bahia (BA)
1031 # There are too many Salvadors elsewhere, so use America/Bahia instead
1032 # of America/Salvador.
1033 Zone America/Bahia -2:34:04 - LMT 1914
1034 -3:00 Brazil BR%sT 2003 Sep 24
1035 -3:00 - BRT 2011 Oct 16
1036 -3:00 Brazil BR%sT 2012 Oct 21
1037 -3:00 - BRT
1038 #
1039 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
1040 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
1041 # Santa Catarina (SC), Rio Grande do Sul (RS)
1042 Zone America/Sao_Paulo -3:06:28 - LMT 1914
1043 -3:00 Brazil BR%sT 1963 Oct 23 0:00
1044 -3:00 1:00 BRST 1964
1045 -3:00 Brazil BR%sT
1046 #
1047 # Mato Grosso do Sul (MS)
1048 Zone America/Campo_Grande -3:38:28 - LMT 1914
1049 -4:00 Brazil AM%sT
1050 #
1051 # Mato Grosso (MT)
1052 Zone America/Cuiaba -3:44:20 - LMT 1914
1053 -4:00 Brazil AM%sT 2003 Sep 24
1054 -4:00 - AMT 2004 Oct 1
1055 -4:00 Brazil AM%sT
1056 #
1057 # Rondônia (RO)
1058 Zone America/Porto_Velho -4:15:36 - LMT 1914
1059 -4:00 Brazil AM%sT 1988 Sep 12
1060 -4:00 - AMT
1061 #
1062 # Roraima (RR)
1063 Zone America/Boa_Vista -4:02:40 - LMT 1914
1064 -4:00 Brazil AM%sT 1988 Sep 12
1065 -4:00 - AMT 1999 Sep 30
1066 -4:00 Brazil AM%sT 2000 Oct 15
1067 -4:00 - AMT
1068 #
1069 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
1070 # The great circle line from Tabatinga to Porto Acre divides
1071 # east from west Amazonas.
1072 Zone America/Manaus -4:00:04 - LMT 1914
1073 -4:00 Brazil AM%sT 1988 Sep 12
1074 -4:00 - AMT 1993 Sep 28
1075 -4:00 Brazil AM%sT 1994 Sep 22
1076 -4:00 - AMT
1077 #
1078 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1079 # Eirunepé, Envira, Ipixuna
1080 Zone America/Eirunepe -4:39:28 - LMT 1914
1081 -5:00 Brazil AC%sT 1988 Sep 12
1082 -5:00 - ACT 1993 Sep 28
1083 -5:00 Brazil AC%sT 1994 Sep 22
1084 -5:00 - ACT 2008 Jun 24 0:00
1085 -4:00 - AMT 2013 Nov 10
1086 -5:00 - ACT
1087 #
1088 # Acre (AC)
1089 Zone America/Rio_Branco -4:31:12 - LMT 1914
1090 -5:00 Brazil AC%sT 1988 Sep 12
1091 -5:00 - ACT 2008 Jun 24 0:00
1092 -4:00 - AMT 2013 Nov 10
1093 -5:00 - ACT
1094
1095 # Chile
1096
1097 # From Paul Eggert (2015-04-03):
1098 # Shanks & Pottenger says America/Santiago introduced standard time in
1099 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1100 # was the same offset as in 1916-1919. It also says Pacific/Easter
1101 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1102 #
1103 # Dates for America/Santiago from 1910 to 2004 are primarily from
1104 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1105 # [1] Chile Law
1106 # http://www.webexhibits.org/daylightsaving/chile.html
1107 # This contains a copy of a this official table:
1108 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1109 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1110 # [1] needs several corrections, though.
1111 #
1112 # The first set of corrections is from:
1113 # [2] History of the Official Time of Chile
1218 # permanently until March 25 of 2017
1219 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1220 #
1221 # From Paul Eggert (2015-03-03):
1222 # For now, assume that the extension will persist indefinitely.
1223
1224 # From Juan Correa (2016-03-18):
1225 # The decree regarding DST has been published in today's Official Gazette:
1226 # http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/
1227 # http://www.leychile.cl/Navegar?idNorma=1088502
1228 # It does consider the second Saturday of May and August as the dates
1229 # for the transition; and it lists DST dates until 2019, but I think
1230 # this scheme will stick.
1231 #
1232 # From Paul Eggert (2016-03-18):
1233 # For now, assume the pattern holds for the indefinite future.
1234 # The decree says transitions occur at 24:00; in practice this appears
1235 # to mean 24:00 mainland time, not 24:00 local time, so that Easter
1236 # Island is always two hours behind the mainland.
1237
1238 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1239 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
1240 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1241 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1242 Rule Chile 1969 only - Mar 30 3:00u 0 -
1243 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1244 Rule Chile 1970 only - Mar 29 3:00u 0 -
1245 Rule Chile 1971 only - Mar 14 3:00u 0 -
1246 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1247 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1248 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1249 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1250 Rule Chile 1987 only - Apr 12 3:00u 0 -
1251 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1252 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
1253 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1254 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1255 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1256 Rule Chile 1997 only - Mar 30 3:00u 0 -
1257 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1258 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1259 Rule Chile 1999 only - Apr 4 3:00u 0 -
1260 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1261 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1262 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1263 # which is used below in specifying the transition.
1264 Rule Chile 2008 only - Mar 30 3:00u 0 -
1265 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1266 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1267 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1268 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1269 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 -
1270 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1271 Rule Chile 2016 max - May Sun>=9 3:00u 0 -
1272 Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S
1273 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1274 # (1996-09) says 1998-03-08. Ignore these.
1275 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1276 Zone America/Santiago -4:42:46 - LMT 1890
1277 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1278 -5:00 - CLT 1916 Jul 1 # Chile Time
1279 -4:42:46 - SMT 1918 Sep 10
1280 -4:00 - CLT 1919 Jul 1
1281 -4:42:46 - SMT 1927 Sep 1
1282 -5:00 Chile CL%sT 1932 Sep 1
1283 -4:00 - CLT 1942 Jun 1
1284 -5:00 - CLT 1942 Aug 1
1285 -4:00 - CLT 1946 Jul 15
1286 -4:00 1:00 CLST 1946 Sep 1 # central Chile
1287 -4:00 - CLT 1947 Apr 1
1288 -5:00 - CLT 1947 May 21 23:00
1289 -4:00 Chile CL%sT
1290 Zone Pacific/Easter -7:17:28 - LMT 1890
1291 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1292 -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
1293 -6:00 Chile EAS%sT
1294 #
1295 # Salas y Gómez Island is uninhabited.
1296 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1297 # and Antarctic bases, are like America/Santiago.
1298
1299 # Antarctic base using South American rules
1300 # (See the file 'antarctica' for more.)
1301 #
1302 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1303 #
1304 # From Ethan Dicks (1996-10-06):
1305 # It keeps the same time as Punta Arenas, Chile, because, just like us
1306 # and the South Pole, that's the other end of their supply line....
1307 # I verified with someone who was there that since 1980,
1308 # Palmer has followed Chile. Prior to that, before the Falklands War,
1309 # Palmer used to be supplied from Argentina.
1310 #
1311 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1312 Zone Antarctica/Palmer 0 - -00 1965
1313 -4:00 Arg AR%sT 1969 Oct 5
1314 -3:00 Arg AR%sT 1982 May
1315 -4:00 Chile CL%sT
1316
1317 # Colombia
1318
1319 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1320 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1321
1322 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1323 Rule CO 1992 only - May 3 0:00 1:00 S
1324 Rule CO 1993 only - Apr 4 0:00 0 -
1325 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1326 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1327 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1328 -5:00 CO CO%sT # Colombia Time
1329 # Malpelo, Providencia, San Andres
1330 # no information; probably like America/Bogota
1331
1332 # Curaçao
1333
1334 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1335 #
1336 # From Paul Eggert (2006-03-22):
1337 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1338 # -4:00 since standard time was introduced on 1912-03-02; and that
1339 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1340 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1341 # Saba Island has been like Curaçao.
1342 # This all predates our 1970 cutoff, though.
1343 #
1344 # By July 2007 Curaçao and St Maarten are planned to become
1345 # associated states within the Netherlands, much like Aruba;
1346 # Bonaire, Saba and St Eustatius would become directly part of the
1347 # Netherlands as Kingdom Islands. This won't affect their time zones
1348 # though, as far as we know.
1349 #
1350 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1351 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1352 -4:30 - ANT 1965 # Netherlands Antilles Time
1353 -4:00 - AST
1354
1355 # From Arthur David Olson (2011-06-15):
1356 # use links for places with new iso3166 codes.
1357 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1358 # and contains an apostrophe; use "Lower_Princes" below.
1359
1360 Link America/Curacao America/Lower_Princes # Sint Maarten
1361 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1362
1363 # Ecuador
1364 #
1365 # Milne says the Central and South American Telegraph Company used -5:24:15.
1366 #
1367 # From Paul Eggert (2007-03-04):
1368 # Apparently Ecuador had a failed experiment with DST in 1992.
1369 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
1370 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
1371 # talk about "hora Sixto". Leave this alone for now, as we have no data.
1372 #
1373 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1374 Zone America/Guayaquil -5:19:20 - LMT 1890
1375 -5:14:00 - QMT 1931 # Quito Mean Time
1376 -5:00 - ECT # Ecuador Time
1377 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1378 -5:00 - ECT 1986
1379 -6:00 - GALT # Galápagos Time
1380
1381 # Falklands
1382
1383 # From Paul Eggert (2006-03-22):
1384 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1385 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1386
1387 # From Falkland Islands Government Office, London (2001-01-22)
1388 # via Jesper Nørgaard:
1389 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1390 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1391 # September. It is anticipated that the clocks will revert back at 2
1392 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1393 # Sunday 1 September.
1394
1395 # From Rives McDow (2001-02-13):
1396 #
1397 # I have communicated several times with people there, and the last
1398 # time I had communications that was helpful was in 1998. Here is
1399 # what was said then:
1459 #
1460 # For now we will assume permanent summer time for the Falklands
1461 # until advised differently (to apply for 2012 and beyond, after the 2011
1462 # experiment was apparently successful.)
1463 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1464 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
1465 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
1466 Rule Falk 1939 only - Oct 1 0:00 1:00 S
1467 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
1468 Rule Falk 1943 only - Jan 1 0:00 0 -
1469 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
1470 Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
1471 Rule Falk 1984 only - Sep 16 0:00 1:00 S
1472 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S
1473 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
1474 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
1475 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S
1476 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1477 Zone Atlantic/Stanley -3:51:24 - LMT 1890
1478 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
1479 -4:00 Falk FK%sT 1983 May # Falkland Is Time
1480 -3:00 Falk FK%sT 1985 Sep 15
1481 -4:00 Falk FK%sT 2010 Sep 5 2:00
1482 -3:00 - FKST
1483
1484 # French Guiana
1485 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1486 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1487 -4:00 - GFT 1967 Oct # French Guiana Time
1488 -3:00 - GFT
1489
1490 # Guyana
1491 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1492 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1493 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1494 -3:45 - GYT 1975 Jul 31 # Guyana Time
1495 -3:00 - GYT 1991
1496 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1497 -4:00 - GYT
1498
1499 # Paraguay
1500 #
1501 # From Paul Eggert (2006-03-22):
1502 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1503 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1504 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1505 #
1506 # From Waldemar Villamayor-Venialbo (2013-09-20):
1507 # No time of the day is established for the adjustment, so people normally
1508 # adjust their clocks at 0 hour of the given dates.
1509 #
1510 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1511 Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1512 Rule Para 1975 1978 - Mar 1 0:00 0 -
1513 Rule Para 1979 1991 - Apr 1 0:00 0 -
1514 Rule Para 1989 only - Oct 22 0:00 1:00 S
1515 Rule Para 1990 only - Oct 1 0:00 1:00 S
1516 Rule Para 1991 only - Oct 6 0:00 1:00 S
1517 Rule Para 1992 only - Mar 1 0:00 0 -
1569 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1570 # ...
1571 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
1572 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1573 #
1574 # From Steffen Thorsen (2013-03-07):
1575 # Paraguay will end DST on 2013-03-24 00:00....
1576 # http://www.ande.gov.py/interna.php?id=1075
1577 #
1578 # From Carlos Raúl Perasso (2013-03-15):
1579 # The change in Paraguay is now final. Decree number 10780
1580 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1581 # From Carlos Raúl Perasso (2014-02-28):
1582 # Decree 1264 can be found at:
1583 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1584 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1585
1586 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1587 Zone America/Asuncion -3:50:40 - LMT 1890
1588 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1589 -4:00 - PYT 1972 Oct # Paraguay Time
1590 -3:00 - PYT 1974 Apr
1591 -4:00 Para PY%sT
1592
1593 # Peru
1594 #
1595 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1596 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1597 # When we were in Peru in 1985-1986, they apparently switched over
1598 # sometime between December 29 and January 3 while we were on the Amazon.
1599 #
1600 # From Paul Eggert (2006-03-22):
1601 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1602
1603 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1604 Rule Peru 1938 only - Jan 1 0:00 1:00 S
1605 Rule Peru 1938 only - Apr 1 0:00 0 -
1606 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
1607 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1608 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
1609 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1610 Rule Peru 1990 only - Jan 1 0:00 1:00 S
1611 Rule Peru 1990 only - Apr 1 0:00 0 -
1612 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1613 Rule Peru 1994 only - Jan 1 0:00 1:00 S
1614 Rule Peru 1994 only - Apr 1 0:00 0 -
1615 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1616 Zone America/Lima -5:08:12 - LMT 1890
1617 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
1618 -5:00 Peru PE%sT # Peru Time
1619
1620 # South Georgia
1621 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1622 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
1623 -2:00 - GST # South Georgia Time
1624
1625 # South Sandwich Is
1626 # uninhabited; scientific personnel have wintered
1627
1628 # Suriname
1629 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1630 Zone America/Paramaribo -3:40:40 - LMT 1911
1631 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1632 -3:40:36 - PMT 1945 Oct # The capital moved?
1633 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
1634 -3:30 - SRT 1984 Oct # Suriname Time
1635 -3:00 - SRT
1636
1637 # Trinidad and Tobago
1638 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1639 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1640 -4:00 - AST
1641
1642 # These all agree with Trinidad and Tobago since 1970.
1643 Link America/Port_of_Spain America/Anguilla
1644 Link America/Port_of_Spain America/Antigua
1645 Link America/Port_of_Spain America/Dominica
1646 Link America/Port_of_Spain America/Grenada
1647 Link America/Port_of_Spain America/Guadeloupe
1648 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1649 Link America/Port_of_Spain America/Montserrat
1650 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1651 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1652 Link America/Port_of_Spain America/St_Lucia
1653 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1654 Link America/Port_of_Spain America/St_Vincent
1655 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1718 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1719 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1720 # 02:00 local time, official time in Uruguay will be at GMT -2.
1721 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1722 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1723 # From Jesper Nørgaard Welen (2006-09-06):
1724 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1725 #
1726 # From Steffen Thorsen (2015-06-30):
1727 # ... it looks like they will not be using DST the coming summer:
1728 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
1729 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
1730 # From Paul Eggert (2015-06-30):
1731 # Apparently restaurateurs complained that DST caused people to go to the beach
1732 # instead of out to dinner.
1733 # From Pablo Camargo (2015-07-13):
1734 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
1735 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
1736 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
1737 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
1738 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1739 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1740 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1741 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
1742 -3:00 Uruguay UY%sT
1743
1744 # Venezuela
1745 #
1746 # From Paul Eggert (2015-07-28):
1747 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1748 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1749 #
1750 # From John Stainforth (2007-11-28):
1751 # ... the change for Venezuela originally expected for 2007-12-31 has
1752 # been brought forward to 2007-12-09. The official announcement was
1753 # published today in the "Gaceta Oficial de la República Bolivariana
1754 # de Venezuela, número 38.819" (official document for all laws or
1755 # resolution publication)
1756 # http://www.globovision.com/news.php?nid=72208
1757
1758 # From Alexander Krivenyshev (2016-04-15):
1759 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1760 #
1761 # From Paul Eggert (2016-04-15):
1762 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1763 # "'Venezuela's new time-zone: hours without light, hours without water,
1764 # hours of presidential broadcasts, hours of lines,' quipped comedian
1765 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1766 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1767 # http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1768 #
1769 # From Matt Johnson (2016-04-20):
1770 # ... published in the official Gazette [2016-04-18], here:
1771 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1772
1773 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1774 Zone America/Caracas -4:27:44 - LMT 1890
1775 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1776 -4:30 - VET 1965 Jan 1 0:00 # Venezuela T.
1777 -4:00 - VET 2007 Dec 9 3:00
1778 -4:30 - VET 2016 May 1 2:30
1779 -4:00 - VET
|
1 # This file is in the public domain, so clarified as of
2 # 2009-05-17 by Arthur David Olson.
3
4 # This file is by no means authoritative; if you think you know better,
5 # go ahead and edit the file (and please send any changes to
6 # tz@iana.org for general use in the future). For more, please see
7 # the file CONTRIBUTING in the tz distribution.
8
9 # From Paul Eggert (2016-12-05):
10 #
11 # Unless otherwise specified, the source for data through 1990 is:
12 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
15 #
16 # Many years ago Gwillim Law wrote that a good source
17 # for time zone data was the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
22 #
23 # For data circa 1899, a common source is:
24 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
25 # http://www.jstor.org/stable/1774359
26 #
27 # These tables use numeric abbreviations like -03 and -0330 for
28 # integer hour and minute UTC offsets. Although earlier editions used
29 # alphabetic time zone abbreviations, these abbreviations were
30 # invented and did not reflect common practice.
31
32 ###############################################################################
33
34 ###############################################################################
35
36 # Argentina
37
38 # From Bob Devine (1988-01-28):
39 # Argentina: first Sunday in October to first Sunday in April since 1976.
40 # Double Summer time from 1969 to 1974. Switches at midnight.
41
42 # From U. S. Naval Observatory (1988-01-19):
43 # ARGENTINA 3 H BEHIND UTC
44
45 # From Hernan G. Otero (1995-06-26):
46 # I am sending modifications to the Argentine time zone table...
47 # AR was chosen because they are the ISO letters that represent Argentina.
48
49 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
50 Rule Arg 1930 only - Dec 1 0:00 1:00 S
345 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276
346 # is ambiguous because establishes a calendar from the 2nd Sunday in
347 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the
348 # complement of that starting on the 2nd Sunday of March at 0:00 and
349 # ending on the 2nd Saturday of March at 24:00.
350 #
351 # This clearly breaks every time the 1st of March or October is a Sunday.
352 #
353 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd
354 # Sunday of October and March.
355 #
356 # The problem is that the changes in the rest of the Provinces that did
357 # change in 2007/2008, were made according to the Federal Law and Decrees
358 # that did so on the 3rd Sunday of October and March.
359 #
360 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday
361 # (October 11th) at 0:00.
362 #
363 # So I guess a new set of rules, besides "Arg", must be made and the last
364 # America/Argentina/San_Luis entries should change to use these...
365 # ...
366
367 # From Alexander Krivenyshev (2010-04-09):
368 # According to news reports from El Diario de la República Province San
369 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
370 # after April 11, 2010 - will continue to have same time as rest of
371 # Argentina (UTC-3) (no DST).
372 #
373 # Confirmaron la prórroga del huso horario de verano (Spanish)
374 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
375 # or (some English translation):
376 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
377
378 # From Mariano Absatz (2010-04-12):
379 # yes...I can confirm this...and given that San Luis keeps calling
380 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
381 # rules...San Luis is still using "Western ARgentina Time" and it got
382 # stuck on Summer daylight savings time even though the summer is over.
383
384 # From Paul Eggert (2013-09-05):
385 # Perhaps San Luis operates on the legal fiction that it is at -04
386 # with perpetual summer time, but ordinary usage typically seems to
387 # just say it's at -03; see, for example,
388 # http://es.wikipedia.org/wiki/Hora_oficial_argentina
389 # We've documented similar situations as being plain changes to
390 # standard time, so let's do that here too. This does not change UTC
391 # offsets, only tm_isdst and the time zone abbreviations. One minor
392 # plus is that this silences a zic complaint that there's no POSIX TZ
393 # setting for time stamps past 2038.
394
395 # From Paul Eggert (2013-02-21):
396 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
397
398 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
399 #
400 # Buenos Aires (BA), Capital Federal (CF),
401 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
402 -4:16:48 - CMT 1920 May # Córdoba Mean Time
403 -4:00 - -04 1930 Dec
404 -4:00 Arg -04/-03 1969 Oct 5
405 -3:00 Arg -03/-02 1999 Oct 3
406 -4:00 Arg -04/-03 2000 Mar 3
407 -3:00 Arg -03/-02
408 #
409 # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
410 # Chaco (CC), Formosa (FM), Santiago del Estero (SE)
411 #
412 # Shanks & Pottenger also make the following claims, which we haven't verified:
413 # - Formosa switched to -3:00 on 1991-01-07.
414 # - Misiones switched to -3:00 on 1990-12-29.
415 # - Chaco switched to -3:00 on 1991-01-04.
416 # - Santiago del Estero switched to -4:00 on 1991-04-01,
417 # then to -3:00 on 1991-04-26.
418 #
419 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
420 -4:16:48 - CMT 1920 May
421 -4:00 - -04 1930 Dec
422 -4:00 Arg -04/-03 1969 Oct 5
423 -3:00 Arg -03/-02 1991 Mar 3
424 -4:00 - -04 1991 Oct 20
425 -3:00 Arg -03/-02 1999 Oct 3
426 -4:00 Arg -04/-03 2000 Mar 3
427 -3:00 Arg -03/-02
428 #
429 # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
430 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
431 -4:16:48 - CMT 1920 May
432 -4:00 - -04 1930 Dec
433 -4:00 Arg -04/-03 1969 Oct 5
434 -3:00 Arg -03/-02 1991 Mar 3
435 -4:00 - -04 1991 Oct 20
436 -3:00 Arg -03/-02 1999 Oct 3
437 -4:00 Arg -04/-03 2000 Mar 3
438 -3:00 Arg -03/-02 2008 Oct 18
439 -3:00 - -03
440 #
441 # Tucumán (TM)
442 Zone America/Argentina/Tucuman -4:20:52 - 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 - -03 2004 Jun 1
451 -4:00 - -04 2004 Jun 13
452 -3:00 Arg -03/-02
453 #
454 # La Rioja (LR)
455 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
456 -4:16:48 - CMT 1920 May
457 -4:00 - -04 1930 Dec
458 -4:00 Arg -04/-03 1969 Oct 5
459 -3:00 Arg -03/-02 1991 Mar 1
460 -4:00 - -04 1991 May 7
461 -3:00 Arg -03/-02 1999 Oct 3
462 -4:00 Arg -04/-03 2000 Mar 3
463 -3:00 - -03 2004 Jun 1
464 -4:00 - -04 2004 Jun 20
465 -3:00 Arg -03/-02 2008 Oct 18
466 -3:00 - -03
467 #
468 # San Juan (SJ)
469 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31
470 -4:16:48 - CMT 1920 May
471 -4:00 - -04 1930 Dec
472 -4:00 Arg -04/-03 1969 Oct 5
473 -3:00 Arg -03/-02 1991 Mar 1
474 -4:00 - -04 1991 May 7
475 -3:00 Arg -03/-02 1999 Oct 3
476 -4:00 Arg -04/-03 2000 Mar 3
477 -3:00 - -03 2004 May 31
478 -4:00 - -04 2004 Jul 25
479 -3:00 Arg -03/-02 2008 Oct 18
480 -3:00 - -03
481 #
482 # Jujuy (JY)
483 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31
484 -4:16:48 - CMT 1920 May
485 -4:00 - -04 1930 Dec
486 -4:00 Arg -04/-03 1969 Oct 5
487 -3:00 Arg -03/-02 1990 Mar 4
488 -4:00 - -04 1990 Oct 28
489 -4:00 1:00 -03 1991 Mar 17
490 -4:00 - -04 1991 Oct 6
491 -3:00 1:00 -02 1992
492 -3:00 Arg -03/-02 1999 Oct 3
493 -4:00 Arg -04/-03 2000 Mar 3
494 -3:00 Arg -03/-02 2008 Oct 18
495 -3:00 - -03
496 #
497 # Catamarca (CT), Chubut (CH)
498 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
499 -4:16:48 - CMT 1920 May
500 -4:00 - -04 1930 Dec
501 -4:00 Arg -04/-03 1969 Oct 5
502 -3:00 Arg -03/-02 1991 Mar 3
503 -4:00 - -04 1991 Oct 20
504 -3:00 Arg -03/-02 1999 Oct 3
505 -4:00 Arg -04/-03 2000 Mar 3
506 -3:00 - -03 2004 Jun 1
507 -4:00 - -04 2004 Jun 20
508 -3:00 Arg -03/-02 2008 Oct 18
509 -3:00 - -03
510 #
511 # Mendoza (MZ)
512 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31
513 -4:16:48 - CMT 1920 May
514 -4:00 - -04 1930 Dec
515 -4:00 Arg -04/-03 1969 Oct 5
516 -3:00 Arg -03/-02 1990 Mar 4
517 -4:00 - -04 1990 Oct 15
518 -4:00 1:00 -03 1991 Mar 1
519 -4:00 - -04 1991 Oct 15
520 -4:00 1:00 -03 1992 Mar 1
521 -4:00 - -04 1992 Oct 18
522 -3:00 Arg -03/-02 1999 Oct 3
523 -4:00 Arg -04/-03 2000 Mar 3
524 -3:00 - -03 2004 May 23
525 -4:00 - -04 2004 Sep 26
526 -3:00 Arg -03/-02 2008 Oct 18
527 -3:00 - -03
528 #
529 # San Luis (SL)
530
531 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
532 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S
533
534 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
535 -4:16:48 - CMT 1920 May
536 -4:00 - -04 1930 Dec
537 -4:00 Arg -04/-03 1969 Oct 5
538 -3:00 Arg -03/-02 1990
539 -3:00 1:00 -02 1990 Mar 14
540 -4:00 - -04 1990 Oct 15
541 -4:00 1:00 -03 1991 Mar 1
542 -4:00 - -04 1991 Jun 1
543 -3:00 - -03 1999 Oct 3
544 -4:00 1:00 -03 2000 Mar 3
545 -3:00 - -03 2004 May 31
546 -4:00 - -04 2004 Jul 25
547 -3:00 Arg -03/-02 2008 Jan 21
548 -4:00 SanLuis -04/-03 2009 Oct 11
549 -3:00 - -03
550 #
551 # Santa Cruz (SC)
552 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
553 -4:16:48 - CMT 1920 May
554 -4:00 - -04 1930 Dec
555 -4:00 Arg -04/-03 1969 Oct 5
556 -3:00 Arg -03/-02 1999 Oct 3
557 -4:00 Arg -04/-03 2000 Mar 3
558 -3:00 - -03 2004 Jun 1
559 -4:00 - -04 2004 Jun 20
560 -3:00 Arg -03/-02 2008 Oct 18
561 -3:00 - -03
562 #
563 # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
564 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
565 -4:16:48 - CMT 1920 May
566 -4:00 - -04 1930 Dec
567 -4:00 Arg -04/-03 1969 Oct 5
568 -3:00 Arg -03/-02 1999 Oct 3
569 -4:00 Arg -04/-03 2000 Mar 3
570 -3:00 - -03 2004 May 30
571 -4:00 - -04 2004 Jun 20
572 -3:00 Arg -03/-02 2008 Oct 18
573 -3:00 - -03
574
575 # Aruba
576 Link America/Curacao America/Aruba
577
578 # Bolivia
579 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
580 Zone America/La_Paz -4:32:36 - LMT 1890
581 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
582 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
583 -4:00 - -04
584
585 # Brazil
586
587 # From Paul Eggert (1993-11-18):
588 # The mayor of Rio recently attempted to change the time zone rules
589 # just in his city, in order to leave more summer time for the tourist trade.
590 # The rule change lasted only part of the day;
591 # the federal government refused to follow the city's rules, and business
592 # was in a chaos, so the mayor backed down that afternoon.
593
594 # From IATA SSIM (1996-02):
595 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS),
596 # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ),
597 # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),
598 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].
599 # [The last three states are new to this issue of the IATA SSIM.]
600
601 # From Gwillim Law (1996-10-07):
602 # Geography, history (Tocantins was part of Goiás until 1989), and other
603 # sources of time zone information lead me to believe that AL, SE, and TO were
915 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -
916 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 -
917 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -
918 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -
919 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -
920 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -
921 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -
922 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -
923 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -
924 # From Arthur David Olson (2008-09-29):
925 # The next is wrong in some years but is better than nothing.
926 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
927
928 # The latest ruleset listed above says that the following states observe DST:
929 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.
930
931 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
932 #
933 # Fernando de Noronha (administratively part of PE)
934 Zone America/Noronha -2:09:40 - LMT 1914
935 -2:00 Brazil -02/-01 1990 Sep 17
936 -2:00 - -02 1999 Sep 30
937 -2:00 Brazil -02/-01 2000 Oct 15
938 -2:00 - -02 2001 Sep 13
939 -2:00 Brazil -02/-01 2002 Oct 1
940 -2:00 - -02
941 # Other Atlantic islands have no permanent settlement.
942 # These include Trindade and Martim Vaz (administratively part of ES),
943 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
944 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;
945 # it also included the Penedos.
946 #
947 # Amapá (AP), east Pará (PA)
948 # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu.
949 # The division between east and west Pará is the river Xingu.
950 # In the north a very small part from the river Javary (now Jari I guess,
951 # the border with Amapá) to the Amazon, then to the Xingu.
952 Zone America/Belem -3:13:56 - LMT 1914
953 -3:00 Brazil -03/-02 1988 Sep 12
954 -3:00 - -03
955 #
956 # west Pará (PA)
957 # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
958 Zone America/Santarem -3:38:48 - LMT 1914
959 -4:00 Brazil -04/-03 1988 Sep 12
960 -4:00 - -04 2008 Jun 24 0:00
961 -3:00 - -03
962 #
963 # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
964 # Paraíba (PB)
965 Zone America/Fortaleza -2:34:00 - LMT 1914
966 -3:00 Brazil -03/-02 1990 Sep 17
967 -3:00 - -03 1999 Sep 30
968 -3:00 Brazil -03/-02 2000 Oct 22
969 -3:00 - -03 2001 Sep 13
970 -3:00 Brazil -03/-02 2002 Oct 1
971 -3:00 - -03
972 #
973 # Pernambuco (PE) (except Atlantic islands)
974 Zone America/Recife -2:19:36 - LMT 1914
975 -3:00 Brazil -03/-02 1990 Sep 17
976 -3:00 - -03 1999 Sep 30
977 -3:00 Brazil -03/-02 2000 Oct 15
978 -3:00 - -03 2001 Sep 13
979 -3:00 Brazil -03/-02 2002 Oct 1
980 -3:00 - -03
981 #
982 # Tocantins (TO)
983 Zone America/Araguaina -3:12:48 - LMT 1914
984 -3:00 Brazil -03/-02 1990 Sep 17
985 -3:00 - -03 1995 Sep 14
986 -3:00 Brazil -03/-02 2003 Sep 24
987 -3:00 - -03 2012 Oct 21
988 -3:00 Brazil -03/-02 2013 Sep
989 -3:00 - -03
990 #
991 # Alagoas (AL), Sergipe (SE)
992 Zone America/Maceio -2:22:52 - LMT 1914
993 -3:00 Brazil -03/-02 1990 Sep 17
994 -3:00 - -03 1995 Oct 13
995 -3:00 Brazil -03/-02 1996 Sep 4
996 -3:00 - -03 1999 Sep 30
997 -3:00 Brazil -03/-02 2000 Oct 22
998 -3:00 - -03 2001 Sep 13
999 -3:00 Brazil -03/-02 2002 Oct 1
1000 -3:00 - -03
1001 #
1002 # Bahia (BA)
1003 # There are too many Salvadors elsewhere, so use America/Bahia instead
1004 # of America/Salvador.
1005 Zone America/Bahia -2:34:04 - LMT 1914
1006 -3:00 Brazil -03/-02 2003 Sep 24
1007 -3:00 - -03 2011 Oct 16
1008 -3:00 Brazil -03/-02 2012 Oct 21
1009 -3:00 - -03
1010 #
1011 # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
1012 # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
1013 # Santa Catarina (SC), Rio Grande do Sul (RS)
1014 Zone America/Sao_Paulo -3:06:28 - LMT 1914
1015 -3:00 Brazil -03/-02 1963 Oct 23 0:00
1016 -3:00 1:00 -02 1964
1017 -3:00 Brazil -03/-02
1018 #
1019 # Mato Grosso do Sul (MS)
1020 Zone America/Campo_Grande -3:38:28 - LMT 1914
1021 -4:00 Brazil -04/-03
1022 #
1023 # Mato Grosso (MT)
1024 Zone America/Cuiaba -3:44:20 - LMT 1914
1025 -4:00 Brazil -04/-03 2003 Sep 24
1026 -4:00 - -04 2004 Oct 1
1027 -4:00 Brazil -04/-03
1028 #
1029 # Rondônia (RO)
1030 Zone America/Porto_Velho -4:15:36 - LMT 1914
1031 -4:00 Brazil -04/-03 1988 Sep 12
1032 -4:00 - -04
1033 #
1034 # Roraima (RR)
1035 Zone America/Boa_Vista -4:02:40 - LMT 1914
1036 -4:00 Brazil -04/-03 1988 Sep 12
1037 -4:00 - -04 1999 Sep 30
1038 -4:00 Brazil -04/-03 2000 Oct 15
1039 -4:00 - -04
1040 #
1041 # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
1042 # The great circle line from Tabatinga to Porto Acre divides
1043 # east from west Amazonas.
1044 Zone America/Manaus -4:00:04 - LMT 1914
1045 -4:00 Brazil -04/-03 1988 Sep 12
1046 -4:00 - -04 1993 Sep 28
1047 -4:00 Brazil -04/-03 1994 Sep 22
1048 -4:00 - -04
1049 #
1050 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1051 # Eirunepé, Envira, Ipixuna
1052 Zone America/Eirunepe -4:39:28 - LMT 1914
1053 -5:00 Brazil -05/-04 1988 Sep 12
1054 -5:00 - -05 1993 Sep 28
1055 -5:00 Brazil -05/-04 1994 Sep 22
1056 -5:00 - -05 2008 Jun 24 0:00
1057 -4:00 - -04 2013 Nov 10
1058 -5:00 - -05
1059 #
1060 # Acre (AC)
1061 Zone America/Rio_Branco -4:31:12 - LMT 1914
1062 -5:00 Brazil -05/-04 1988 Sep 12
1063 -5:00 - -05 2008 Jun 24 0:00
1064 -4:00 - -04 2013 Nov 10
1065 -5:00 - -05
1066
1067 # Chile
1068
1069 # From Paul Eggert (2015-04-03):
1070 # Shanks & Pottenger says America/Santiago introduced standard time in
1071 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1072 # was the same offset as in 1916-1919. It also says Pacific/Easter
1073 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1074 #
1075 # Dates for America/Santiago from 1910 to 2004 are primarily from
1076 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1077 # [1] Chile Law
1078 # http://www.webexhibits.org/daylightsaving/chile.html
1079 # This contains a copy of a this official table:
1080 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1081 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1082 # [1] needs several corrections, though.
1083 #
1084 # The first set of corrections is from:
1085 # [2] History of the Official Time of Chile
1190 # permanently until March 25 of 2017
1191 # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg
1192 #
1193 # From Paul Eggert (2015-03-03):
1194 # For now, assume that the extension will persist indefinitely.
1195
1196 # From Juan Correa (2016-03-18):
1197 # The decree regarding DST has been published in today's Official Gazette:
1198 # http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/
1199 # http://www.leychile.cl/Navegar?idNorma=1088502
1200 # It does consider the second Saturday of May and August as the dates
1201 # for the transition; and it lists DST dates until 2019, but I think
1202 # this scheme will stick.
1203 #
1204 # From Paul Eggert (2016-03-18):
1205 # For now, assume the pattern holds for the indefinite future.
1206 # The decree says transitions occur at 24:00; in practice this appears
1207 # to mean 24:00 mainland time, not 24:00 local time, so that Easter
1208 # Island is always two hours behind the mainland.
1209
1210 # From Juan Correa (2016-12-04):
1211 # Magallanes region ... will keep DST (UTC -3) all year round....
1212 # 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
1213 #
1214 # From Deborah Goldsmith (2017-01-19):
1215 # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
1216 # From Paul Eggert (2017-01-19):
1217 # The above says the Magallanes change expires 2019-05-11 at 24:00,
1218 # so in theory, they will revert to -04/-03 after that, which means
1219 # they will switch from -03 to -04 one hour after Santiago does that day.
1220 # For now, assume that they will not revert.
1221
1222 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1223 Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
1224 Rule Chile 1928 1932 - Apr 1 0:00 0 -
1225 Rule Chile 1968 only - Nov 3 4:00u 1:00 S
1226 Rule Chile 1969 only - Mar 30 3:00u 0 -
1227 Rule Chile 1969 only - Nov 23 4:00u 1:00 S
1228 Rule Chile 1970 only - Mar 29 3:00u 0 -
1229 Rule Chile 1971 only - Mar 14 3:00u 0 -
1230 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S
1231 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 -
1232 Rule Chile 1973 only - Sep 30 4:00u 1:00 S
1233 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S
1234 Rule Chile 1987 only - Apr 12 3:00u 0 -
1235 Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 -
1236 Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S
1237 Rule Chile 1990 only - Sep 16 4:00u 1:00 S
1238 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 -
1239 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S
1240 Rule Chile 1997 only - Mar 30 3:00u 0 -
1241 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 -
1242 Rule Chile 1998 only - Sep 27 4:00u 1:00 S
1243 Rule Chile 1999 only - Apr 4 3:00u 0 -
1244 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S
1245 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -
1246 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
1247 # which is used below in specifying the transition.
1248 Rule Chile 2008 only - Mar 30 3:00u 0 -
1249 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -
1250 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -
1251 Rule Chile 2011 only - May Sun>=2 3:00u 0 -
1252 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S
1253 Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 -
1254 Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S
1255 Rule Chile 2016 max - May Sun>=9 3:00u 0 -
1256 Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S
1257 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
1258 # (1996-09) says 1998-03-08. Ignore these.
1259 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1260 Zone America/Santiago -4:42:46 - LMT 1890
1261 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
1262 -5:00 - -05 1916 Jul 1
1263 -4:42:46 - SMT 1918 Sep 10
1264 -4:00 - -04 1919 Jul 1
1265 -4:42:46 - SMT 1927 Sep 1
1266 -5:00 Chile -05/-04 1932 Sep 1
1267 -4:00 - -04 1942 Jun 1
1268 -5:00 - -05 1942 Aug 1
1269 -4:00 - -04 1946 Jul 15
1270 -4:00 1:00 -03 1946 Sep 1 # central Chile
1271 -4:00 - -04 1947 Apr 1
1272 -5:00 - -05 1947 May 21 23:00
1273 -4:00 Chile -04/-03
1274 Zone America/Punta_Arenas -4:43:40 - LMT 1890
1275 -4:42:46 - SMT 1910 Jan 10
1276 -5:00 - -05 1916 Jul 1
1277 -4:42:46 - SMT 1918 Sep 10
1278 -4:00 - -04 1919 Jul 1
1279 -4:42:46 - SMT 1927 Sep 1
1280 -5:00 Chile -05/-04 1932 Sep 1
1281 -4:00 - -04 1942 Jun 1
1282 -5:00 - -05 1942 Aug 1
1283 -4:00 - -04 1947 Apr 1
1284 -5:00 - -05 1947 May 21 23:00
1285 -4:00 Chile -04/-03 2016 Dec 4
1286 -3:00 - -03
1287 Zone Pacific/Easter -7:17:28 - LMT 1890
1288 -7:17:28 - EMT 1932 Sep # Easter Mean Time
1289 -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time
1290 -6:00 Chile -06/-05
1291 #
1292 # Salas y Gómez Island is uninhabited.
1293 # Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
1294 # and Antarctic bases, are like America/Santiago.
1295
1296 # Antarctic base using South American rules
1297 # (See the file 'antarctica' for more.)
1298 #
1299 # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
1300 #
1301 # From Ethan Dicks (1996-10-06):
1302 # It keeps the same time as Punta Arenas, Chile, because, just like us
1303 # and the South Pole, that's the other end of their supply line....
1304 # I verified with someone who was there that since 1980,
1305 # Palmer has followed Chile. Prior to that, before the Falklands War,
1306 # Palmer used to be supplied from Argentina.
1307 #
1308 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1309 Zone Antarctica/Palmer 0 - -00 1965
1310 -4:00 Arg -04/-03 1969 Oct 5
1311 -3:00 Arg -03/-02 1982 May
1312 -4:00 Chile -04/-03 2016 Dec 4
1313 -3:00 - -03
1314
1315 # Colombia
1316
1317 # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,
1318 # "A variation of fifteen minutes in the public clocks of Bogota is not rare."
1319
1320 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1321 Rule CO 1992 only - May 3 0:00 1:00 S
1322 Rule CO 1993 only - Apr 4 0:00 0 -
1323 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1324 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
1325 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
1326 -5:00 CO -05/-04
1327 # Malpelo, Providencia, San Andres
1328 # no information; probably like America/Bogota
1329
1330 # Curaçao
1331
1332 # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.
1333 #
1334 # From Paul Eggert (2006-03-22):
1335 # Shanks & Pottenger say that The Bottom and Philipsburg have been at
1336 # -4:00 since standard time was introduced on 1912-03-02; and that
1337 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from
1338 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say
1339 # Saba Island has been like Curaçao.
1340 # This all predates our 1970 cutoff, though.
1341 #
1342 # By July 2007 Curaçao and St Maarten are planned to become
1343 # associated states within the Netherlands, much like Aruba;
1344 # Bonaire, Saba and St Eustatius would become directly part of the
1345 # Netherlands as Kingdom Islands. This won't affect their time zones
1346 # though, as far as we know.
1347 #
1348 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1349 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1350 -4:30 - -0430 1965
1351 -4:00 - AST
1352
1353 # From Arthur David Olson (2011-06-15):
1354 # use links for places with new iso3166 codes.
1355 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1356 # and contains an apostrophe; use "Lower_Princes" below.
1357
1358 Link America/Curacao America/Lower_Princes # Sint Maarten
1359 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1360
1361 # Ecuador
1362 #
1363 # Milne says the Central and South American Telegraph Company used -5:24:15.
1364 #
1365 # From Alois Treindl (2016-12-15):
1366 # http://www.elcomercio.com/actualidad/hora-sixto-1993.html
1367 # ... Whether the law applied also to Galápagos, I do not know.
1368 # From Paul Eggert (2016-12-15):
1369 # http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
1370 # This says President Sixto Durán Ballén signed decree No. 285, which
1371 # established DST from 1992-11-28 to 1993-02-05; it does not give transition
1372 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did
1373 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
1374 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
1375 # sol" ("It was dawning in the middle of the night, the buses went to class
1376 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
1377 # (Not one step back), the clocks went back in 1993 and the experiment was not
1378 # repeated. For now, assume transitions were at 00:00 local time country-wide.
1379 #
1380 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1381 Rule Ecuador 1992 only - Nov 28 0:00 1:00 S
1382 Rule Ecuador 1993 only - Feb 5 0:00 0 -
1383 #
1384 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1385 Zone America/Guayaquil -5:19:20 - LMT 1890
1386 -5:14:00 - QMT 1931 # Quito Mean Time
1387 -5:00 Ecuador -05/-04
1388 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1389 -5:00 - -05 1986
1390 -6:00 Ecuador -06/-05
1391
1392 # Falklands
1393
1394 # From Paul Eggert (2006-03-22):
1395 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except
1396 # the IATA gives 1996-09-08. Go with Shanks & Pottenger.
1397
1398 # From Falkland Islands Government Office, London (2001-01-22)
1399 # via Jesper Nørgaard:
1400 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15
1401 # April 2001 and advance one hour to summer time at 2 am on Sunday 2
1402 # September. It is anticipated that the clocks will revert back at 2
1403 # am on Sunday 21 April 2002 and advance to summer time at 2 am on
1404 # Sunday 1 September.
1405
1406 # From Rives McDow (2001-02-13):
1407 #
1408 # I have communicated several times with people there, and the last
1409 # time I had communications that was helpful was in 1998. Here is
1410 # what was said then:
1470 #
1471 # For now we will assume permanent summer time for the Falklands
1472 # until advised differently (to apply for 2012 and beyond, after the 2011
1473 # experiment was apparently successful.)
1474 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1475 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S
1476 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 -
1477 Rule Falk 1939 only - Oct 1 0:00 1:00 S
1478 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S
1479 Rule Falk 1943 only - Jan 1 0:00 0 -
1480 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S
1481 Rule Falk 1984 1985 - Apr lastSun 0:00 0 -
1482 Rule Falk 1984 only - Sep 16 0:00 1:00 S
1483 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S
1484 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -
1485 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 -
1486 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S
1487 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1488 Zone Atlantic/Stanley -3:51:24 - LMT 1890
1489 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
1490 -4:00 Falk -04/-03 1983 May
1491 -3:00 Falk -03/-02 1985 Sep 15
1492 -4:00 Falk -04/-03 2010 Sep 5 2:00
1493 -3:00 - -03
1494
1495 # French Guiana
1496 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1497 Zone America/Cayenne -3:29:20 - LMT 1911 Jul
1498 -4:00 - -04 1967 Oct
1499 -3:00 - -03
1500
1501 # Guyana
1502 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1503 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1504 -3:45 - -0345 1975 Jul 31
1505 -3:00 - -03 1991
1506 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1507 -4:00 - -04
1508
1509 # Paraguay
1510 #
1511 # From Paul Eggert (2006-03-22):
1512 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00,
1513 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999
1514 # editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1515 #
1516 # From Waldemar Villamayor-Venialbo (2013-09-20):
1517 # No time of the day is established for the adjustment, so people normally
1518 # adjust their clocks at 0 hour of the given dates.
1519 #
1520 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1521 Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1522 Rule Para 1975 1978 - Mar 1 0:00 0 -
1523 Rule Para 1979 1991 - Apr 1 0:00 0 -
1524 Rule Para 1989 only - Oct 22 0:00 1:00 S
1525 Rule Para 1990 only - Oct 1 0:00 1:00 S
1526 Rule Para 1991 only - Oct 6 0:00 1:00 S
1527 Rule Para 1992 only - Mar 1 0:00 0 -
1579 # forward 60 minutes, in all the territory of the Paraguayan Republic.
1580 # ...
1581 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S
1582 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -
1583 #
1584 # From Steffen Thorsen (2013-03-07):
1585 # Paraguay will end DST on 2013-03-24 00:00....
1586 # http://www.ande.gov.py/interna.php?id=1075
1587 #
1588 # From Carlos Raúl Perasso (2013-03-15):
1589 # The change in Paraguay is now final. Decree number 10780
1590 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf
1591 # From Carlos Raúl Perasso (2014-02-28):
1592 # Decree 1264 can be found at:
1593 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf
1594 Rule Para 2013 max - Mar Sun>=22 0:00 0 -
1595
1596 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1597 Zone America/Asuncion -3:50:40 - LMT 1890
1598 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
1599 -4:00 - -04 1972 Oct
1600 -3:00 - -03 1974 Apr
1601 -4:00 Para -04/-03
1602
1603 # Peru
1604 #
1605 # From Evelyn C. Leeper via Mark Brader (2003-10-26)
1606 # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:
1607 # When we were in Peru in 1985-1986, they apparently switched over
1608 # sometime between December 29 and January 3 while we were on the Amazon.
1609 #
1610 # From Paul Eggert (2006-03-22):
1611 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.
1612
1613 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1614 Rule Peru 1938 only - Jan 1 0:00 1:00 S
1615 Rule Peru 1938 only - Apr 1 0:00 0 -
1616 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S
1617 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 -
1618 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S
1619 Rule Peru 1986 1987 - Apr 1 0:00 0 -
1620 Rule Peru 1990 only - Jan 1 0:00 1:00 S
1621 Rule Peru 1990 only - Apr 1 0:00 0 -
1622 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger.
1623 Rule Peru 1994 only - Jan 1 0:00 1:00 S
1624 Rule Peru 1994 only - Apr 1 0:00 0 -
1625 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1626 Zone America/Lima -5:08:12 - LMT 1890
1627 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
1628 -5:00 Peru -05/-04
1629
1630 # South Georgia
1631 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1632 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
1633 -2:00 - -02
1634
1635 # South Sandwich Is
1636 # uninhabited; scientific personnel have wintered
1637
1638 # Suriname
1639 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1640 Zone America/Paramaribo -3:40:40 - LMT 1911
1641 -3:40:52 - PMT 1935 # Paramaribo Mean Time
1642 -3:40:36 - PMT 1945 Oct # The capital moved?
1643 -3:30 - -0330 1984 Oct
1644 -3:00 - -03
1645
1646 # Trinidad and Tobago
1647 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1648 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1649 -4:00 - AST
1650
1651 # These all agree with Trinidad and Tobago since 1970.
1652 Link America/Port_of_Spain America/Anguilla
1653 Link America/Port_of_Spain America/Antigua
1654 Link America/Port_of_Spain America/Dominica
1655 Link America/Port_of_Spain America/Grenada
1656 Link America/Port_of_Spain America/Guadeloupe
1657 Link America/Port_of_Spain America/Marigot # St Martin (French part)
1658 Link America/Port_of_Spain America/Montserrat
1659 Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy
1660 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis
1661 Link America/Port_of_Spain America/St_Lucia
1662 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)
1663 Link America/Port_of_Spain America/St_Vincent
1664 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)
1727 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF
1728 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at
1729 # 02:00 local time, official time in Uruguay will be at GMT -2.
1730 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S
1731 Rule Uruguay 2006 only - Mar 12 2:00 0 -
1732 # From Jesper Nørgaard Welen (2006-09-06):
1733 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF
1734 #
1735 # From Steffen Thorsen (2015-06-30):
1736 # ... it looks like they will not be using DST the coming summer:
1737 # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787
1738 # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/
1739 # From Paul Eggert (2015-06-30):
1740 # Apparently restaurateurs complained that DST caused people to go to the beach
1741 # instead of out to dinner.
1742 # From Pablo Camargo (2015-07-13):
1743 # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf
1744 # [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
1745 Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
1746 Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
1747
1748 # This Zone can be simplified once we assume zic %z.
1749 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
1750 -3:44:44 - MMT 1920 May 1 # Montevideo MT
1751 -3:30 Uruguay -0330/-03 1942 Dec 14
1752 -3:00 Uruguay -03/-02 1968
1753 -3:00 Uruguay -03/-0230 1971
1754 -3:00 Uruguay -03/-02 1974
1755 -3:00 Uruguay -03/-0230 1974 Dec 22
1756 -3:00 Uruguay -03/-02
1757
1758 # Venezuela
1759 #
1760 # From Paul Eggert (2015-07-28):
1761 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1762 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1763 #
1764 # From John Stainforth (2007-11-28):
1765 # ... the change for Venezuela originally expected for 2007-12-31 has
1766 # been brought forward to 2007-12-09. The official announcement was
1767 # published today in the "Gaceta Oficial de la República Bolivariana
1768 # de Venezuela, número 38.819" (official document for all laws or
1769 # resolution publication)
1770 # http://www.globovision.com/news.php?nid=72208
1771
1772 # From Alexander Krivenyshev (2016-04-15):
1773 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1774 #
1775 # From Paul Eggert (2016-04-15):
1776 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1777 # "'Venezuela's new time-zone: hours without light, hours without water,
1778 # hours of presidential broadcasts, hours of lines,' quipped comedian
1779 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1780 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1781 # http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1782 #
1783 # From Matt Johnson (2016-04-20):
1784 # ... published in the official Gazette [2016-04-18], here:
1785 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1786
1787 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1788 Zone America/Caracas -4:27:44 - LMT 1890
1789 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1790 -4:30 - -0430 1965 Jan 1 0:00
1791 -4:00 - -04 2007 Dec 9 3:00
1792 -4:30 - -0430 2016 May 1 2:30
1793 -4:00 - -04
|