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1# <pre>
1# <pre>
2# @(#)northamerica 8.51
2# @(#)northamerica 8.52
3# This file is in the public domain, so clarified as of
4# 2009-05-17 by Arthur David Olson.
5
6# also includes Central America and the Caribbean
7
8# This data is by no means authoritative; if you think you know better,
9# go ahead and edit the file (and please send any changes to
10# tz@elsie.nci.nih.gov for general use in the future).

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1115# information about standard and daylight saving time zones in Canada.
1116# </a> (updated periodically).
1117# Its unofficial information is often taken from Matthews and Vincent.
1118
1119# From Paul Eggert (2006-06-27):
1120# For now, assume all of DST-observing Canada will fall into line with the
1121# new US DST rules,
1122
3# This file is in the public domain, so clarified as of
4# 2009-05-17 by Arthur David Olson.
5
6# also includes Central America and the Caribbean
7
8# This data is by no means authoritative; if you think you know better,
9# go ahead and edit the file (and please send any changes to
10# tz@elsie.nci.nih.gov for general use in the future).

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1115# information about standard and daylight saving time zones in Canada.
1116# </a> (updated periodically).
1117# Its unofficial information is often taken from Matthews and Vincent.
1118
1119# From Paul Eggert (2006-06-27):
1120# For now, assume all of DST-observing Canada will fall into line with the
1121# new US DST rules,
1122
1123# From Chris Walton (2011-12-01)
1124# In the first of Tammy Hardwick's articles
1125# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260">
1126# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1127# </a>
1128# she quotes the Friday November 1/1918 edition of the Creston Review.
1129# The quote includes these two statements:
1130# 'Sunday the CPR went back to the old system of time...'
1131# '... The daylight saving scheme was dropped all over Canada at the same time,'
1132# These statements refer to a transition from daylight time to standard time
1133# that occurred nationally on Sunday October 27/1918. This transition was
1134# also documented in the Saturday October 26/1918 edition of the Toronto Star.
1135
1136# In light of that evidence, we alter the date from the earlier believed
1137# Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
1138# than Thursday) in all Canadian rulesets.
1139
1123# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1124Rule Canada 1918 only - Apr 14 2:00 1:00 D
1140# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1141Rule Canada 1918 only - Apr 14 2:00 1:00 D
1125Rule Canada 1918 only - Oct 31 2:00 0 S
1142Rule Canada 1918 only - Oct 27 2:00 0 S
1126Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
1127Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
1128Rule Canada 1945 only - Sep 30 2:00 0 S
1129Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
1130Rule Canada 1974 2006 - Oct lastSun 2:00 0 S
1131Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D
1132Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D
1133Rule Canada 2007 max - Nov Sun>=1 2:00 0 S

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1640# Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s)
1641# starting 1966. Since 02:00s is clearly correct for 1967 on, assume
1642# it was also 02:00s in 1966.
1643
1644# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1645Rule Winn 1916 only - Apr 23 0:00 1:00 D
1646Rule Winn 1916 only - Sep 17 0:00 0 S
1647Rule Winn 1918 only - Apr 14 2:00 1:00 D
1143Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
1144Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
1145Rule Canada 1945 only - Sep 30 2:00 0 S
1146Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
1147Rule Canada 1974 2006 - Oct lastSun 2:00 0 S
1148Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D
1149Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D
1150Rule Canada 2007 max - Nov Sun>=1 2:00 0 S

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1657# Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s)
1658# starting 1966. Since 02:00s is clearly correct for 1967 on, assume
1659# it was also 02:00s in 1966.
1660
1661# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1662Rule Winn 1916 only - Apr 23 0:00 1:00 D
1663Rule Winn 1916 only - Sep 17 0:00 0 S
1664Rule Winn 1918 only - Apr 14 2:00 1:00 D
1648Rule Winn 1918 only - Oct 31 2:00 0 S
1665Rule Winn 1918 only - Oct 27 2:00 0 S
1649Rule Winn 1937 only - May 16 2:00 1:00 D
1650Rule Winn 1937 only - Sep 26 2:00 0 S
1651Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
1652Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
1653Rule Winn 1945 only - Sep lastSun 2:00 0 S
1654Rule Winn 1946 only - May 12 2:00 1:00 D
1655Rule Winn 1946 only - Oct 13 2:00 0 S
1656Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D

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1723
1724# From Chris Walton (2006-06-26):
1725# The Saskatchewan time act which was last updated in 1996 is about 30 pages
1726# long and rather painful to read.
1727# http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf
1728
1729# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1730Rule Regina 1918 only - Apr 14 2:00 1:00 D
1666Rule Winn 1937 only - May 16 2:00 1:00 D
1667Rule Winn 1937 only - Sep 26 2:00 0 S
1668Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
1669Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
1670Rule Winn 1945 only - Sep lastSun 2:00 0 S
1671Rule Winn 1946 only - May 12 2:00 1:00 D
1672Rule Winn 1946 only - Oct 13 2:00 0 S
1673Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D

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1740
1741# From Chris Walton (2006-06-26):
1742# The Saskatchewan time act which was last updated in 1996 is about 30 pages
1743# long and rather painful to read.
1744# http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf
1745
1746# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1747Rule Regina 1918 only - Apr 14 2:00 1:00 D
1731Rule Regina 1918 only - Oct 31 2:00 0 S
1748Rule Regina 1918 only - Oct 27 2:00 0 S
1732Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
1733Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
1734Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
1735Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
1736Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
1737Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
1738Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
1739Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace

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1760 -7:00 Swift M%sT 1972 Apr lastSun 2:00
1761 -6:00 - CST
1762
1763
1764# Alberta
1765
1766# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1767Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
1749Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
1750Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
1751Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
1752Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
1753Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
1754Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
1755Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
1756Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace

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1777 -7:00 Swift M%sT 1972 Apr lastSun 2:00
1778 -6:00 - CST
1779
1780
1781# Alberta
1782
1783# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1784Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
1768Rule Edm 1918 only - Oct 31 2:00 0 S
1785Rule Edm 1918 only - Oct 27 2:00 0 S
1769Rule Edm 1919 only - May 27 2:00 0 S
1770Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
1771Rule Edm 1920 only - Oct lastSun 2:00 0 S
1772Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
1773Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
1774Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
1775Rule Edm 1945 only - Sep lastSun 2:00 0 S
1776Rule Edm 1947 only - Apr lastSun 2:00 1:00 D

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1790# British Columbia
1791
1792# From Paul Eggert (2006-03-22):
1793# Shanks & Pottenger write that since 1970 most of this region has
1794# been like Vancouver.
1795# Dawson Creek uses MST. Much of east BC is like Edmonton.
1796# Matthews and Vincent (1998) write that Creston is like Dawson Creek.
1797
1786Rule Edm 1919 only - May 27 2:00 0 S
1787Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
1788Rule Edm 1920 only - Oct lastSun 2:00 0 S
1789Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
1790Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
1791Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
1792Rule Edm 1945 only - Sep lastSun 2:00 0 S
1793Rule Edm 1947 only - Apr lastSun 2:00 1:00 D

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1807# British Columbia
1808
1809# From Paul Eggert (2006-03-22):
1810# Shanks & Pottenger write that since 1970 most of this region has
1811# been like Vancouver.
1812# Dawson Creek uses MST. Much of east BC is like Edmonton.
1813# Matthews and Vincent (1998) write that Creston is like Dawson Creek.
1814
1815# It seems though that (re: Creston) is not entirely correct:
1816
1817# From Chris Walton (2011-12-01):
1818# There are two areas within the Canadian province of British Columbia
1819# that do not currently observe daylight saving:
1820# a) The Creston Valley (includes the town of Creston and surrounding area)
1821# b) The eastern half of the Peace River Regional District
1822# (includes the cities of Dawson Creek and Fort St. John)
1823
1824# Earlier this year I stumbled across a detailed article about the time
1825# keeping history of Creston; it was written by Tammy Hardwick who is the
1826# manager of the Creston & District Museum. The article was written in May 2009.
1827# <a href="http://www.ilovecreston.com/?p=articles&t=spec&ar=260">
1828# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1829# </a>
1830# According to the article, Creston has not changed its clocks since June 1918.
1831# i.e. Creston has been stuck on UTC-7 for 93 years.
1832# Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
1833
1834# Unfortunately the exact date for the time change in June 1918 remains
1835# unknown and will be difficult to ascertain. I e-mailed Tammy a few months
1836# ago to ask if Sunday June 2 was a reasonable guess. She said it was just
1837# as plausible as any other date (in June). She also said that after writing the
1838# article she had discovered another time change in 1916; this is the subject
1839# of another article which she wrote in October 2010.
1840# <a href="http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56">
1841# http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56
1842# </a>
1843
1844# Here is a summary of the three clock change events in Creston's history:
1845# 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7)
1846# Exact date unknown
1847# 2. Oct 1916: switch to Pacific Standard Time (GMT-8)
1848# Exact date in October unknown; Sunday October 1 is a reasonable guess.
1849# 3. June 1918: switch to Pacific Daylight Time (GMT-7)
1850# Exact date in June unknown; Sunday June 2 is a reasonable guess.
1851# note#1:
1852# On Oct 27/1918 when daylight saving ended in the rest of Canada,
1853# Creston did not change its clocks.
1854# note#2:
1855# During WWII when the Federal Government legislated a mandatory clock change,
1856# Creston did not oblige.
1857# note#3:
1858# There is no guarantee that Creston will remain on Mountain Standard Time
1859# (UTC-7) forever.
1860# The subject was debated at least once this year by the town Council.
1861# <a href="http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html">
1862# http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html
1863# </a>
1864
1865# During a period WWII, summer time (Daylight saying) was mandatory in Canada.
1866# In Creston, that was handled by shifting the area to PST (-8:00) then applying
1867# summer time to cause the offset to be -7:00, the same as it had been before
1868# the change. It can be argued that the timezone abbreviation during this
1869# period should be PDT rather than MST, but that doesn't seem important enough
1870# (to anyone) to further complicate the rules.
1871
1872# The transition dates (and times) are guesses.
1873
1798# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1799Rule Vanc 1918 only - Apr 14 2:00 1:00 D
1874# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1875Rule Vanc 1918 only - Apr 14 2:00 1:00 D
1800Rule Vanc 1918 only - Oct 31 2:00 0 S
1876Rule Vanc 1918 only - Oct 27 2:00 0 S
1801Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
1802Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
1803Rule Vanc 1945 only - Sep 30 2:00 0 S
1804Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
1805Rule Vanc 1946 only - Oct 13 2:00 0 S
1806Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
1807Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
1808# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1809Zone America/Vancouver -8:12:28 - LMT 1884
1810 -8:00 Vanc P%sT 1987
1811 -8:00 Canada P%sT
1812Zone America/Dawson_Creek -8:00:56 - LMT 1884
1813 -8:00 Canada P%sT 1947
1814 -8:00 Vanc P%sT 1972 Aug 30 2:00
1815 -7:00 - MST
1877Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
1878Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
1879Rule Vanc 1945 only - Sep 30 2:00 0 S
1880Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
1881Rule Vanc 1946 only - Oct 13 2:00 0 S
1882Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
1883Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
1884# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1885Zone America/Vancouver -8:12:28 - LMT 1884
1886 -8:00 Vanc P%sT 1987
1887 -8:00 Canada P%sT
1888Zone America/Dawson_Creek -8:00:56 - LMT 1884
1889 -8:00 Canada P%sT 1947
1890 -8:00 Vanc P%sT 1972 Aug 30 2:00
1891 -7:00 - MST
1892Zone America/Creston -7:46:04 - LMT 1884
1893 -7:00 - MST 1916 Oct 1
1894 -8:00 - PST 1918 Jun 2
1895 -7:00 - MST
1816
1896
1817
1818# Northwest Territories, Nunavut, Yukon
1819
1820# From Paul Eggert (2006-03-22):
1821# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
1822# Mathew Englander (1996-10-07) gives the following refs:
1823# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
1824# c. 7 defines Yukon standard time as UTC-9. This is still valid;
1825# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).

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1897# Northwest Territories, Nunavut, Yukon
1898
1899# From Paul Eggert (2006-03-22):
1900# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
1901# Mathew Englander (1996-10-07) gives the following refs:
1902# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
1903# c. 7 defines Yukon standard time as UTC-9. This is still valid;
1904# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).

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