92 # of Light" published in the Journal de Paris (1784-04-26).
93 # Not everyone is happy with the results:
94 #
95 # I don't really care how time is reckoned so long as there is some
96 # agreement about it, but I object to being told that I am saving
97 # daylight when my reason tells me that I am doing nothing of the kind.
98 # I even object to the implication that I am wasting something
99 # valuable if I stay in bed after the sun has risen. As an admirer
100 # of moonlight I resent the bossy insistence of those who want to
101 # reduce my time for enjoying it. At the back of the Daylight Saving
102 # scheme I detect the bony, blue-fingered hand of Puritanism, eager
103 # to push people into bed earlier, and get them up earlier, to make
104 # them healthy, wealthy and wise in spite of themselves.
105 #
106 # -- Robertson Davies, The diary of Samuel Marchbanks,
107 # Clarke, Irwin (1947), XIX, Sunday
108 #
109 # For more about the first ten years of DST in the United States, see
110 # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint
111 # (Carnegie Library of Pittsburgh, 1927).
112 # http://www.clpgh.org/exhibit/dst.html
113 #
114 # Shanks says that DST was called "War Time" in the US in 1918 and 1919.
115 # However, DST was imposed by the Standard Time Act of 1918, which
116 # was the first nationwide legal time standard, and apparently
117 # time was just called "Standard Time" or "Daylight Saving Time".
118
119 # From Paul Eggert (2019-06-04):
120 # Here is the legal basis for the US federal rules.
121 # * Public Law 65-106 (1918-03-19) implemented standard and daylight saving
122 # time for the first time across the US, springing forward on March's last
123 # Sunday and falling back on October's last Sunday.
124 # https://www.loc.gov/law/help/statutes-at-large/65th-congress/session-2/c65s2ch24.pdf
125 # * Public Law 66-40 (1919-08-20) repealed DST on October 1919's last Sunday.
126 # https://www.loc.gov/law/help/statutes-at-large/66th-congress/session-1/c66s1ch51.pdf
127 # * Public Law 77-403 (1942-01-20) started wartime DST on 1942-02-09.
128 # https://www.loc.gov/law/help/statutes-at-large/77th-congress/session-2/c77s2ch7.pdf
129 # * Public Law 79-187 (1945-09-25) ended wartime DST on 1945-09-30.
130 # https://www.loc.gov/law/help/statutes-at-large/79th-congress/session-1/c79s1ch388.pdf
131 # * Public Law 89-387 (1966-04-13) reinstituted a national standard for DST,
132 # from April's last Sunday to October's last Sunday, effective 1967.
1476 -3:30 Canada N%sT 1946
1477 -3:30 StJohns N%sT 2011 Nov
1478 -3:30 Canada N%sT
1479
1480 # most of east Labrador
1481
1482 # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'.
1483 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1484 Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
1485 -3:30:52 - NST 1918
1486 -3:30:52 Canada N%sT 1919
1487 -3:30:52 - NST 1935 Mar 30
1488 -3:30 - NST 1936
1489 -3:30 StJohns N%sT 1942 May 11
1490 -3:30 Canada N%sT 1946
1491 -3:30 StJohns N%sT 1966 Mar 15 2:00
1492 -4:00 StJohns A%sT 2011 Nov
1493 -4:00 Canada A%sT
1494
1495
1496 # west Labrador, Nova Scotia, Prince Edward I
1497
1498 # From Brian Inglis (2015-07-20):
1499 # From the historical weather station records available at:
1500 # https://weatherspark.com/history/28351/1971/Sydney-Nova-Scotia-Canada
1501 # Sydney shares the same time history as Glace Bay, so was
1502 # likely to be the same across the island....
1503 # Sydney, as the capital and most populous location, or Cape Breton, would
1504 # have been better names for the zone had we known this in 1996.
1505
1506 # From Paul Eggert (2015-07-20):
1507 # Shanks & Pottenger write that since 1970 most of this region has been like
1508 # Halifax. Many locales did not observe peacetime DST until 1972;
1509 # the Cape Breton area, represented by Glace Bay, is the largest we know of
1510 # (Glace Bay was perhaps not the best name choice but no point changing now).
1511 # Shanks & Pottenger also write that Liverpool, NS was the only town
1512 # in Canada to observe DST in 1971 but not 1970; for now we'll assume
1513 # this is a typo.
1514
1515 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1516 Rule Halifax 1916 only - Apr 1 0:00 1:00 D
1517 Rule Halifax 1916 only - Oct 1 0:00 0 S
1518 Rule Halifax 1920 only - May 9 0:00 1:00 D
1519 Rule Halifax 1920 only - Aug 29 0:00 0 S
1520 Rule Halifax 1921 only - May 6 0:00 1:00 D
1521 Rule Halifax 1921 1922 - Sep 5 0:00 0 S
1522 Rule Halifax 1922 only - Apr 30 0:00 1:00 D
1523 Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
1524 Rule Halifax 1923 only - Sep 4 0:00 0 S
1525 Rule Halifax 1924 only - Sep 15 0:00 0 S
1526 Rule Halifax 1925 only - Sep 28 0:00 0 S
1527 Rule Halifax 1926 only - May 16 0:00 1:00 D
1528 Rule Halifax 1926 only - Sep 13 0:00 0 S
1529 Rule Halifax 1927 only - May 1 0:00 1:00 D
1530 Rule Halifax 1927 only - Sep 26 0:00 0 S
1531 Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
1532 Rule Halifax 1928 only - Sep 9 0:00 0 S
1533 Rule Halifax 1929 only - Sep 3 0:00 0 S
1534 Rule Halifax 1930 only - Sep 15 0:00 0 S
1588 Rule Moncton 1940 only - May 19 1:00 1:00 D
1589 Rule Moncton 1941 only - May 4 1:00 1:00 D
1590 Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D
1591 Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
1592 Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
1593 Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
1594 Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
1595 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1596 Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
1597 -5:00 - EST 1902 Jun 15
1598 -4:00 Canada A%sT 1933
1599 -4:00 Moncton A%sT 1942
1600 -4:00 Canada A%sT 1946
1601 -4:00 Moncton A%sT 1973
1602 -4:00 Canada A%sT 1993
1603 -4:00 Moncton A%sT 2007
1604 -4:00 Canada A%sT
1605
1606 # Quebec
1607
1608 # From Paul Eggert (2015-03-24):
1609 # See America/Toronto for most of Quebec, including Montreal.
1610 #
1611 # Matthews and Vincent (1998) also write that Quebec east of the -63
1612 # meridian is supposed to observe AST, but residents as far east as
1613 # Natashquan use EST/EDT, and residents east of Natashquan use AST.
1614 # The Quebec department of justice writes in
1615 # "The situation in Minganie and Basse-Côte-Nord"
1616 # http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm
1617 # that the coastal strip from just east of Natashquan to Blanc-Sablon
1618 # observes Atlantic standard time all year round.
1619 # https://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en
1620 # says this common practice was codified into law as of 2007.
1621 # For lack of better info, guess this practice began around 1970, contra to
1622 # Shanks & Pottenger who have this region observing AST/ADT.
1623
1624 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1625 Zone America/Blanc-Sablon -3:48:28 - LMT 1884
1626 -4:00 Canada A%sT 1970
1627 -4:00 - AST
1628
1629 # Ontario
1630
1631 # From Paul Eggert (2006-07-09):
1632 # Shanks & Pottenger write that since 1970 most of Ontario has been like
1633 # Toronto.
1634 # Thunder Bay skipped DST in 1973.
1635 # Many smaller locales did not observe peacetime DST until 1974;
1636 # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1637 # Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
1638
1639 # From Mark Brader (2003-07-26):
1640 # [According to the Toronto Star] Orillia, Ontario, adopted DST
1641 # effective Saturday, 1912-06-22, 22:00; the article mentions that
1642 # Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
1643 # have already done so. In Orillia DST was to run until Saturday,
1644 # 1912-08-31 (no time mentioned), but it was met with considerable
1645 # hostility from certain segments of the public, and was revoked after
1646 # only two weeks - I copied it as Saturday, 1912-07-07, 22:00, but
1647 # presumably that should be -07-06. (1912-06-19, -07-12; also letters
1648 # earlier in June).
1649 #
1650 # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
1651 #
1652 # From Paul Eggert (2017-07-08):
1653 # For more on Orillia, see: Daubs K. Bold attempt at daylight saving
1654 # time became a comic failure in Orillia. Toronto Star 2017-07-08.
1655 # https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html
1656
1657 # From Paul Eggert (1997-10-17):
1658 # Mark Brader writes that an article in the 1997-10-14 Toronto Star
2425 # I sent Aziz an e-mail asking when Resolute Bay had stopped using
2426 # Eastern Standard Time.
2427 #
2428 # Aziz responded quickly with this: "hi, The time was not changed for the
2429 # 1 year only, the following year, the community went back to the old way
2430 # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in
2431 # the winter Zulu plus 6 hrs"
2432 #
2433 # This of course conflicted with everything I had ascertained in November 2008.
2434 #
2435 # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz
2436 # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You
2437 # may want to check with the weather office in Resolute Bay or do a
2438 # search on the weather through Env. Canada. web site"
2439 #
2440 # If I had realized the Stephanie did not live in Resolute Bay I would
2441 # never have contacted her. I now believe that all the information I
2442 # obtained in November 2008 should be ignored...
2443 # I apologize for reporting incorrect information in 2008.
2444
2445 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2446 Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
2447 Rule NT_YK 1918 only - Oct 27 2:00 0 S
2448 Rule NT_YK 1919 only - May 25 2:00 1:00 D
2449 Rule NT_YK 1919 only - Nov 1 0:00 0 S
2450 Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
2451 Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
2452 Rule NT_YK 1945 only - Sep 30 2:00 0 S
2453 Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
2454 Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
2455 Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
2456 Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
2457 Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
2458 # Zone NAME STDOFF RULES FORMAT [UNTIL]
2459 # aka Panniqtuuq
2460 Zone America/Pangnirtung 0 - -00 1921 # trading post est.
2461 -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
2462 -5:00 Canada E%sT 1999 Oct 31 2:00
2463 -6:00 Canada C%sT 2000 Oct 29 2:00
2464 -5:00 Canada E%sT
2479 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2480 -5:00 - EST 2001 Apr 1 3:00
2481 -6:00 Canada C%sT
2482 # aka Iqaluktuuttiaq
2483 Zone America/Cambridge_Bay 0 - -00 1920 # trading post est.?
2484 -7:00 NT_YK M%sT 1999 Oct 31 2:00
2485 -6:00 Canada C%sT 2000 Oct 29 2:00
2486 -5:00 - EST 2000 Nov 5 0:00
2487 -6:00 - CST 2001 Apr 1 3:00
2488 -7:00 Canada M%sT
2489 Zone America/Yellowknife 0 - -00 1935 # Yellowknife founded?
2490 -7:00 NT_YK M%sT 1980
2491 -7:00 Canada M%sT
2492 Zone America/Inuvik 0 - -00 1953 # Inuvik founded
2493 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
2494 -7:00 NT_YK M%sT 1980
2495 -7:00 Canada M%sT
2496 Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
2497 -9:00 NT_YK Y%sT 1967 May 28 0:00
2498 -8:00 NT_YK P%sT 1980
2499 -8:00 Canada P%sT
2500 Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
2501 -9:00 NT_YK Y%sT 1973 Oct 28 0:00
2502 -8:00 NT_YK P%sT 1980
2503 -8:00 Canada P%sT
2504
2505
2506 ###############################################################################
2507
2508 # Mexico
2509
2510 # From Paul Eggert (2014-12-07):
2511 # The Investigation and Analysis Service of the
2512 # Mexican Library of Congress (MLoC) has published a
2513 # history of Mexican local time (in Spanish)
2514 # http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
2515 #
2516 # Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2517 # (In all cases we go with the MLoC.)
2518 # S&P report that Baja was at -8:00 in 1922/1923.
2519 # S&P say the 1930 transition in Baja was 1930-11-16.
2520 # S&P report no DST during summer 1931.
2521 # S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2522
2523 # From Gwillim Law (2001-02-20):
|
92 # of Light" published in the Journal de Paris (1784-04-26).
93 # Not everyone is happy with the results:
94 #
95 # I don't really care how time is reckoned so long as there is some
96 # agreement about it, but I object to being told that I am saving
97 # daylight when my reason tells me that I am doing nothing of the kind.
98 # I even object to the implication that I am wasting something
99 # valuable if I stay in bed after the sun has risen. As an admirer
100 # of moonlight I resent the bossy insistence of those who want to
101 # reduce my time for enjoying it. At the back of the Daylight Saving
102 # scheme I detect the bony, blue-fingered hand of Puritanism, eager
103 # to push people into bed earlier, and get them up earlier, to make
104 # them healthy, wealthy and wise in spite of themselves.
105 #
106 # -- Robertson Davies, The diary of Samuel Marchbanks,
107 # Clarke, Irwin (1947), XIX, Sunday
108 #
109 # For more about the first ten years of DST in the United States, see
110 # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint
111 # (Carnegie Library of Pittsburgh, 1927).
112 # https://web.archive.org/web/20160517155308/http://www.clpgh.org/exhibit/dst.html
113 #
114 # Shanks says that DST was called "War Time" in the US in 1918 and 1919.
115 # However, DST was imposed by the Standard Time Act of 1918, which
116 # was the first nationwide legal time standard, and apparently
117 # time was just called "Standard Time" or "Daylight Saving Time".
118
119 # From Paul Eggert (2019-06-04):
120 # Here is the legal basis for the US federal rules.
121 # * Public Law 65-106 (1918-03-19) implemented standard and daylight saving
122 # time for the first time across the US, springing forward on March's last
123 # Sunday and falling back on October's last Sunday.
124 # https://www.loc.gov/law/help/statutes-at-large/65th-congress/session-2/c65s2ch24.pdf
125 # * Public Law 66-40 (1919-08-20) repealed DST on October 1919's last Sunday.
126 # https://www.loc.gov/law/help/statutes-at-large/66th-congress/session-1/c66s1ch51.pdf
127 # * Public Law 77-403 (1942-01-20) started wartime DST on 1942-02-09.
128 # https://www.loc.gov/law/help/statutes-at-large/77th-congress/session-2/c77s2ch7.pdf
129 # * Public Law 79-187 (1945-09-25) ended wartime DST on 1945-09-30.
130 # https://www.loc.gov/law/help/statutes-at-large/79th-congress/session-1/c79s1ch388.pdf
131 # * Public Law 89-387 (1966-04-13) reinstituted a national standard for DST,
132 # from April's last Sunday to October's last Sunday, effective 1967.
1476 -3:30 Canada N%sT 1946
1477 -3:30 StJohns N%sT 2011 Nov
1478 -3:30 Canada N%sT
1479
1480 # most of east Labrador
1481
1482 # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'.
1483 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1484 Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
1485 -3:30:52 - NST 1918
1486 -3:30:52 Canada N%sT 1919
1487 -3:30:52 - NST 1935 Mar 30
1488 -3:30 - NST 1936
1489 -3:30 StJohns N%sT 1942 May 11
1490 -3:30 Canada N%sT 1946
1491 -3:30 StJohns N%sT 1966 Mar 15 2:00
1492 -4:00 StJohns A%sT 2011 Nov
1493 -4:00 Canada A%sT
1494
1495
1496 # west Labrador, Nova Scotia, Prince Edward I,
1497 # Îles-de-la-Madeleine, Listuguj reserve
1498
1499 # From Brian Inglis (2015-07-20):
1500 # From the historical weather station records available at:
1501 # https://weatherspark.com/history/28351/1971/Sydney-Nova-Scotia-Canada
1502 # Sydney shares the same time history as Glace Bay, so was
1503 # likely to be the same across the island....
1504 # Sydney, as the capital and most populous location, or Cape Breton, would
1505 # have been better names for the zone had we known this in 1996.
1506
1507 # From Paul Eggert (2015-07-20):
1508 # Shanks & Pottenger write that since 1970 most of this region has been like
1509 # Halifax. Many locales did not observe peacetime DST until 1972;
1510 # the Cape Breton area, represented by Glace Bay, is the largest we know of
1511 # (Glace Bay was perhaps not the best name choice but no point changing now).
1512 # Shanks & Pottenger also write that Liverpool, NS was the only town
1513 # in Canada to observe DST in 1971 but not 1970; for now we'll assume
1514 # this is a typo.
1515
1516 # From Jeffery Nichols (2020-01-09):
1517 # America/Halifax ... also applies to Îles-de-la-Madeleine and the Listuguj
1518 # reserve in Quebec. Officially, this came into effect on January 1, 2007
1519 # (Legal Time Act, CQLR c T-5.1), but the legislative debates surrounding that
1520 # bill say that it is "accommodating the customs and practices" of those
1521 # regions, which suggests that they have always been in-line with Halifax.
1522
1523 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1524 Rule Halifax 1916 only - Apr 1 0:00 1:00 D
1525 Rule Halifax 1916 only - Oct 1 0:00 0 S
1526 Rule Halifax 1920 only - May 9 0:00 1:00 D
1527 Rule Halifax 1920 only - Aug 29 0:00 0 S
1528 Rule Halifax 1921 only - May 6 0:00 1:00 D
1529 Rule Halifax 1921 1922 - Sep 5 0:00 0 S
1530 Rule Halifax 1922 only - Apr 30 0:00 1:00 D
1531 Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
1532 Rule Halifax 1923 only - Sep 4 0:00 0 S
1533 Rule Halifax 1924 only - Sep 15 0:00 0 S
1534 Rule Halifax 1925 only - Sep 28 0:00 0 S
1535 Rule Halifax 1926 only - May 16 0:00 1:00 D
1536 Rule Halifax 1926 only - Sep 13 0:00 0 S
1537 Rule Halifax 1927 only - May 1 0:00 1:00 D
1538 Rule Halifax 1927 only - Sep 26 0:00 0 S
1539 Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
1540 Rule Halifax 1928 only - Sep 9 0:00 0 S
1541 Rule Halifax 1929 only - Sep 3 0:00 0 S
1542 Rule Halifax 1930 only - Sep 15 0:00 0 S
1596 Rule Moncton 1940 only - May 19 1:00 1:00 D
1597 Rule Moncton 1941 only - May 4 1:00 1:00 D
1598 Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D
1599 Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
1600 Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
1601 Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
1602 Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
1603 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1604 Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
1605 -5:00 - EST 1902 Jun 15
1606 -4:00 Canada A%sT 1933
1607 -4:00 Moncton A%sT 1942
1608 -4:00 Canada A%sT 1946
1609 -4:00 Moncton A%sT 1973
1610 -4:00 Canada A%sT 1993
1611 -4:00 Moncton A%sT 2007
1612 -4:00 Canada A%sT
1613
1614 # Quebec
1615
1616 # From Paul Eggert (2020-01-10):
1617 # See America/Toronto for most of Quebec, including Montreal.
1618 # See America/Halifax for the Îles de la Madeleine and the Listuguj reserve.
1619 #
1620 # Matthews and Vincent (1998) also write that Quebec east of the -63
1621 # meridian is supposed to observe AST, but residents as far east as
1622 # Natashquan use EST/EDT, and residents east of Natashquan use AST.
1623 # The Quebec department of justice writes in
1624 # "The situation in Minganie and Basse-Côte-Nord"
1625 # https://www.justice.gouv.qc.ca/en/department/ministre/functions-and-responsabilities/legal-time-in-quebec/the-situation-in-minganie-and-basse-cote-nord/
1626 # that the coastal strip from just east of Natashquan to Blanc-Sablon
1627 # observes Atlantic standard time all year round.
1628 # This common practice was codified into law as of 2007; see Legal Time Act,
1629 # CQLR c T-5.1 <http://legisquebec.gouv.qc.ca/en/ShowDoc/cs/T-5.1>.
1630 # For lack of better info, guess this practice began around 1970, contra to
1631 # Shanks & Pottenger who have this region observing AST/ADT.
1632
1633 # Zone NAME STDOFF RULES FORMAT [UNTIL]
1634 Zone America/Blanc-Sablon -3:48:28 - LMT 1884
1635 -4:00 Canada A%sT 1970
1636 -4:00 - AST
1637
1638 # Ontario
1639
1640 # From Paul Eggert (2006-07-09):
1641 # Shanks & Pottenger write that since 1970 most of Ontario has been like
1642 # Toronto.
1643 # Thunder Bay skipped DST in 1973.
1644 # Many smaller locales did not observe peacetime DST until 1974;
1645 # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1646 # Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
1647
1648 # From Jeffery Nichols (2020-02-06):
1649 # According to the [Shanks] atlas, those western Ontario zones are huge,
1650 # covering most of Ontario northwest of Sault Ste Marie and Timmins.
1651 # The zones seem to include towns bigger than the ones they're named after,
1652 # like Dryden in America/Rainy_River and Wawa (and maybe Attawapiskat) in
1653 # America/Nipigon. I assume it's too much trouble to change the name of the
1654 # zone (like when you found out that America/Glace_Bay includes Sydney, Nova
1655 # Scotia)....
1656
1657 # From Mark Brader (2003-07-26):
1658 # [According to the Toronto Star] Orillia, Ontario, adopted DST
1659 # effective Saturday, 1912-06-22, 22:00; the article mentions that
1660 # Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
1661 # have already done so. In Orillia DST was to run until Saturday,
1662 # 1912-08-31 (no time mentioned), but it was met with considerable
1663 # hostility from certain segments of the public, and was revoked after
1664 # only two weeks - I copied it as Saturday, 1912-07-07, 22:00, but
1665 # presumably that should be -07-06. (1912-06-19, -07-12; also letters
1666 # earlier in June).
1667 #
1668 # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
1669 #
1670 # From Paul Eggert (2017-07-08):
1671 # For more on Orillia, see: Daubs K. Bold attempt at daylight saving
1672 # time became a comic failure in Orillia. Toronto Star 2017-07-08.
1673 # https://www.thestar.com/news/insight/2017/07/08/bold-attempt-at-daylight-saving-time-became-a-comic-failure-in-orillia.html
1674
1675 # From Paul Eggert (1997-10-17):
1676 # Mark Brader writes that an article in the 1997-10-14 Toronto Star
2443 # I sent Aziz an e-mail asking when Resolute Bay had stopped using
2444 # Eastern Standard Time.
2445 #
2446 # Aziz responded quickly with this: "hi, The time was not changed for the
2447 # 1 year only, the following year, the community went back to the old way
2448 # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in
2449 # the winter Zulu plus 6 hrs"
2450 #
2451 # This of course conflicted with everything I had ascertained in November 2008.
2452 #
2453 # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz
2454 # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You
2455 # may want to check with the weather office in Resolute Bay or do a
2456 # search on the weather through Env. Canada. web site"
2457 #
2458 # If I had realized the Stephanie did not live in Resolute Bay I would
2459 # never have contacted her. I now believe that all the information I
2460 # obtained in November 2008 should be ignored...
2461 # I apologize for reporting incorrect information in 2008.
2462
2463 # From Tim Parenti (2020-03-05):
2464 # The government of Yukon announced [yesterday] the cessation of seasonal time
2465 # changes. "After clocks are pushed ahead one hour on March 8, the territory
2466 # will remain on [UTC-07]. ... [The government] found 93 per cent of
2467 # respondents wanted to end seasonal time changes and, of that group, 70 per
2468 # cent wanted 'permanent Pacific Daylight Saving Time.'"
2469 # https://www.cbc.ca/news/canada/north/yukon-end-daylight-saving-time-1.5486358
2470 #
2471 # Although the government press release prefers PDT, we prefer MST for
2472 # consistency with nearby Dawson Creek, Creston, and Fort Nelson.
2473 # https://yukon.ca/en/news/yukon-end-seasonal-time-change
2474
2475 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2476 Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
2477 Rule NT_YK 1918 only - Oct 27 2:00 0 S
2478 Rule NT_YK 1919 only - May 25 2:00 1:00 D
2479 Rule NT_YK 1919 only - Nov 1 0:00 0 S
2480 Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
2481 Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
2482 Rule NT_YK 1945 only - Sep 30 2:00 0 S
2483 Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
2484 Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
2485 Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
2486 Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
2487 Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
2488 # Zone NAME STDOFF RULES FORMAT [UNTIL]
2489 # aka Panniqtuuq
2490 Zone America/Pangnirtung 0 - -00 1921 # trading post est.
2491 -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
2492 -5:00 Canada E%sT 1999 Oct 31 2:00
2493 -6:00 Canada C%sT 2000 Oct 29 2:00
2494 -5:00 Canada E%sT
2509 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2510 -5:00 - EST 2001 Apr 1 3:00
2511 -6:00 Canada C%sT
2512 # aka Iqaluktuuttiaq
2513 Zone America/Cambridge_Bay 0 - -00 1920 # trading post est.?
2514 -7:00 NT_YK M%sT 1999 Oct 31 2:00
2515 -6:00 Canada C%sT 2000 Oct 29 2:00
2516 -5:00 - EST 2000 Nov 5 0:00
2517 -6:00 - CST 2001 Apr 1 3:00
2518 -7:00 Canada M%sT
2519 Zone America/Yellowknife 0 - -00 1935 # Yellowknife founded?
2520 -7:00 NT_YK M%sT 1980
2521 -7:00 Canada M%sT
2522 Zone America/Inuvik 0 - -00 1953 # Inuvik founded
2523 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
2524 -7:00 NT_YK M%sT 1980
2525 -7:00 Canada M%sT
2526 Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
2527 -9:00 NT_YK Y%sT 1967 May 28 0:00
2528 -8:00 NT_YK P%sT 1980
2529 -8:00 Canada P%sT 2020 Mar 8 2:00
2530 -7:00 - MST
2531 Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
2532 -9:00 NT_YK Y%sT 1973 Oct 28 0:00
2533 -8:00 NT_YK P%sT 1980
2534 -8:00 Canada P%sT 2020 Mar 8 2:00
2535 -7:00 - MST
2536
2537
2538 ###############################################################################
2539
2540 # Mexico
2541
2542 # From Paul Eggert (2014-12-07):
2543 # The Investigation and Analysis Service of the
2544 # Mexican Library of Congress (MLoC) has published a
2545 # history of Mexican local time (in Spanish)
2546 # http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
2547 #
2548 # Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2549 # (In all cases we go with the MLoC.)
2550 # S&P report that Baja was at -8:00 in 1922/1923.
2551 # S&P say the 1930 transition in Baja was 1930-11-16.
2552 # S&P report no DST during summer 1931.
2553 # S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2554
2555 # From Gwillim Law (2001-02-20):
|