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diff --git a/time/northamerica b/time/northamerica
index 1d0342a..5771981 100644
--- a/time/northamerica
+++ b/time/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica 7.25
+# @(#)northamerica 7.26
# also includes Central America and the Caribbean
# This data is by no means authoritative; if you think you know better,
@@ -21,6 +21,24 @@
# Make sure you have the errata sheet; the book is somewhat useless without it.
# It is the source for the US and Puerto Rico entries below.
+# From Paul Eggert (1996-06-12):
+# Daylight Saving Time was first suggested as a joke by Benjamin Franklin
+# in his whimsical essay ``Turkey vs Eagle, McCauley is my Beagle'' (1784).
+# Not everyone is happy with the results:
+#
+# I don't really care how time is reckoned so long as there is some
+# agreement about it, but I object to being told that I am saving
+# daylight when my reason tells me that I am doing nothing of the kind.
+# I even object to the implication that I am wasting something
+# valuable if I stay in bed after the sun has risen. As an admirer
+# of moonlight I resent the bossy insistence of those who want to
+# reduce my time for enjoying it. At the back of the Daylight Saving
+# scheme I detect the bony, blue-fingered hand of Puritanism, eager
+# to push people into bed earlier, and get them up earlier, to make
+# them healthy, wealthy and wise in spite of themselves.
+#
+# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday
+
# From Arthur David Olson:
# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
# See, for example, the front page of the Saturday, October 26, 1974
@@ -463,78 +481,6 @@ Link Pacific/Honolulu HST
# Canada
-# Canada is reportedly lots easier than the US--leastways since 1951.
-# I don't know what they did before then.
-# 4.3BSD claims that it's perfectly regular.
-# According to a posting in "comp.bugs.misc", "comp.unix.wizards", etc.
-# on February 8, 1987, by Dave Sherman of the Law Society of Upper Canada,
-# "...Canada (well, Ontario and at least some of the other provinces) are
-# adopting the new daylight savings time rules...". We assume all of
-# Canada is doing so.
-
-# From Bob Devine (January 28, 1988):
-# All of Canada did have DST from your first rule except Saskatchewan.
-# Which parts did not observe DST is hard to pinpoint but most of the
-# province follows the rules.
-# NOTE: those that didn't have DST for that rule, also
-# probably did not have it for several years previous.
-
-# From U. S. Naval Observatory (January 19, 1989):
-# CANADA NEW FDL 3.5H BEHIND UTC ST.JOHN'S
-# CANADA NEW FDL 1.5H BEHIND UTC APR 3 - OCT 29
-# CANADA ATLANTIC 4 H BEHIND UTC HALIFAX
-# CANADA ATLANTIC 3 H BEHIND UTC APR 3 - OCT 29
-# CANADA EASTERN 5 H BEHIND UTC TORONTO, MONTREAL, OTTAWA
-# CANADA EASTERN 4 H BEHIND UTC APR 3 - OCT 29
-# CANADA CENTRAL 6 H BEHIND UTC REGINA, WINNIPEG
-# CANADA CENTRAL 5 H BEHIND UTC APR 3 - OCT 29
-# CANADA MOUNTAIN 7 H BEHIND UTC CALGARY, EDMONTON
-# CANADA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 29
-# CANADA PACIFIC 8 H BEHIND UTC VANCOUVER
-# CANADA PACIFIC 7 H BEHIND UTC APR 3 - OCT 29
-# CANADA YUKON SAME AS PACIFIC DAWSON
-
-# From Arthur David Olson (January 21, 1989):
-# April 3 fell on a Sunday in 1988; October 29 fell on a Sunday in 1989. Ahem.
-# Note claim that there's double DST in Newfoundland and that Yukon should
-# be same as Pacific.
-
-# From W. Jones (jones@skdad.usask.ca) (November 6, 1992):
-# The. . .below is based on information I got from our law library, the
-# provincial archives, and the provincial Community Services department.
-# A precise history would require digging through newspaper archives, and
-# since you didn't say what you wanted, I didn't bother.
-#
-# Saskatchewan is split by a time zone meridian (105W) and over the years
-# the boundary became pretty ragged as communities near it reevaluated
-# their affiliations in one direction or the other. In 1965 a provincial
-# referendum favoured legislating common time practices.
-#
-# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
-# Saskatchewan 1978) was proclaimed, and established that the eastern
-# part of Saskatchewan would use CST year round, that districts in
-# northwest Saskatchewan would by default follow CST but could opt to
-# follow Mountain Time rules (thus 1 hour difference in the winter and
-# zero in the summer), and that districts in southwest Saskatchewan would
-# by default follow MT but could opt to follow CST.
-#
-# It took a few years for the dust to settle (I know one story of a town
-# on one time zone having its school in another, such that a mom had to
-# serve her family lunch in two shifts), but presently it seems that only
-# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
-# rules any more; all other districts appear to have used CST year round
-# since sometime in the 1960s.
-#
-# Here's how I would summarize things. Establish a "Saskatchewan" CST
-# time zone, and note that it officially exists as of 15 April 1966. Any
-# current exceptions can put themselves in the "Mountain" zone, since
-# those are the rules they follow. Any past exceptions can be forgotten,
-# since that's what those who live here have done.
-
-# From Arthur David Olson (November 21, 1992):
-# East-Saskatchewan kept to avoid problems for folks using that zone by name;
-# plain Saskatchewan added.
-
# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14):
# I post here the time zone abbreviations standardized in Canada
# for both English and French in the CAN/CSA-Z234.4-89 standard....
@@ -567,7 +513,21 @@ Link Pacific/Honolulu HST
# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
# Alas, this sort of thing must be handled by localization software.
-# From Shanks (1991):
+# The data for Canada are all from Shanks (1991).
+
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Canada 1918 only - Apr 14 2:00 1:00 D
+Rule Canada 1918 only - Oct 31 2:00 0 S
+Rule Canada 1942 only - Feb 9 2:00 1:00 D
+Rule Canada 1945 only - Sep 30 2:00 0 S
+Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
+Rule Canada 1974 max - Oct lastSun 2:00 0 S
+Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D
+
+
+# Newfoundland
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule StJohns 1917 1918 - Apr Sun>=8 2:00 1:00 D
Rule StJohns 1917 only - Sep 17 2:00 0 S
@@ -606,6 +566,16 @@ Zone America/St_Johns -3:30:52 - LMT 1884
-3:31 StJohns N%sT 1935 Mar 30
-3:30 StJohns N%sT
+
+# Labrador, New Brunswick, Nova Scotia, Prince Edward I
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Halifax.
+# Many locales did not observe peacetime DST until 1972;
+# Glace Bay, NS is the largest that we know of.
+# Shanks also writes that Liverpool, NS was the only town in Canada to observe
+# DST in 1971 but not 1970; for now we'll assume this is a typo.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Halifax 1916 only - Apr 1 0:00 1:00 D
Rule Halifax 1916 only - Oct 1 0:00 0 S
@@ -650,6 +620,21 @@ Rule Halifax 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
-4:00 Halifax A%sT
+Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
+ -4:00 Canada A%sT 1953
+ -4:00 Halifax A%sT 1954
+ -4:00 - AST 1972
+ -4:00 Halifax A%sT
+
+
+# Ontario, Quebec
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Montreal.
+# Thunder Bay skipped DST in 1973.
+# Many smaller locales did not observe peacetime DST until 1974;
+# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
+# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mont 1917 only - Mar 25 2:00 1:00 D
@@ -683,6 +668,18 @@ Rule Mont 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Montreal -4:54:16 - LMT 1884
-5:00 Mont E%sT
+Zone America/Thunder_Bay -5:57:00 - LMT 1895
+ -5:00 Canada E%sT 1970
+ -5:00 Mont E%sT 1973
+ -5:00 - EST 1974
+ -5:00 Canada E%sT
+Zone America/Nipigon -5:53:04 - LMT 1895
+ -5:00 Canada E%sT
+Zone America/Rainy_River -6:17:56 - LMT 1895
+ -6:00 Canada C%sT
+
+
+# Manitoba
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Winn 1916 only - Apr 23 0:00 1:00 D
@@ -712,6 +709,40 @@ Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D
Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
-6:00 Winn C%sT
+
+# Saskatchewan
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Regina.
+# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
+# Other western towns (e.g. Lloydminster) are like Edmonton.
+
+# From W. Jones <jones@skdad.usask.ca> (November 6, 1992):
+# The. . .below is based on information I got from our law library, the
+# provincial archives, and the provincial Community Services department.
+# A precise history would require digging through newspaper archives, and
+# since you didn't say what you wanted, I didn't bother.
+#
+# Saskatchewan is split by a time zone meridian (105W) and over the years
+# the boundary became pretty ragged as communities near it reevaluated
+# their affiliations in one direction or the other. In 1965 a provincial
+# referendum favoured legislating common time practices.
+#
+# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
+# Saskatchewan 1978) was proclaimed, and established that the eastern
+# part of Saskatchewan would use CST year round, that districts in
+# northwest Saskatchewan would by default follow CST but could opt to
+# follow Mountain Time rules (thus 1 hour difference in the winter and
+# zero in the summer), and that districts in southwest Saskatchewan would
+# by default follow MT but could opt to follow CST.
+#
+# It took a few years for the dust to settle (I know one story of a town
+# on one time zone having its school in another, such that a mom had to
+# serve her family lunch in two shifts), but presently it seems that only
+# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
+# rules any more; all other districts appear to have used CST year round
+# since sometime in the 1960s.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Regina 1918 only - Apr 14 2:00 1:00 D
Rule Regina 1918 only - Oct 31 2:00 0 S
@@ -723,14 +754,29 @@ Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
Rule Regina 1942 only - Feb 9 2:00 1:00 D
Rule Regina 1945 only - Sep lastSun 2:00 0 S
-Rule Regina 1946 only - Apr 14 2:00 1:00 D
-Rule Regina 1946 only - Oct 13 2:00 0 S
-Rule Regina 1947 1960 - Apr lastSun 2:00 1:00 D
-Rule Regina 1947 1959 - Sep lastSun 2:00 0 S
+Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
+Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
+Rule Regina 1947 1959 - Apr lastSun 2:00 1:00 D
+Rule Regina 1947 1958 - Sep lastSun 2:00 0 S
+Rule Regina 1959 only - Oct lastSun 2:00 0 S
+#
+Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
+Rule Swift 1957 only - Oct lastSun 2:00 0 S
+Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
+Rule Swift 1959 only - Oct lastSun 2:00 0 S
+Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Regina -6:58:36 - LMT 1905 Sep
- -7:00 Regina M%sT 1966 Apr 15
+Zone America/Regina -6:58:36 - LMT 1905 Sep
+ -7:00 Regina M%sT 1960 Apr lastSun 2:00
-6:00 - CST
+Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
+ -7:00 Canada M%sT 1946 Apr lastSun 2:00
+ -7:00 Regina M%sT 1950
+ -7:00 Swift M%sT 1972 Apr lastSun 2:00
+ -6:00 - CST
+
+
+# Alberta
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
@@ -754,6 +800,13 @@ Rule Edm 1987 max - Apr Sun>=1 2:00 1:00 D
Zone America/Edmonton -7:33:52 - LMT 1906 Sep
-7:00 Edm M%sT
+
+# British Columbia
+
+# From Paul Eggert (1996-06-12):
+# Shanks writes that since 1970 most of this region has been like Vancouver.
+# Dawswon Creek uses MST. Much of east BC is like Edmonton.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Vanc 1918 only - Apr 14 2:00 1:00 D
Rule Vanc 1918 only - Oct 31 2:00 0 S
@@ -767,23 +820,50 @@ Rule Vanc 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Vancouver -8:12:28 - LMT 1884
-8:00 Vanc P%sT
+Zone America/Dawson_Creek -8:00:56 - LMT 1884
+ -8:00 Canada P%sT 1947
+ -8:00 Vanc P%sT 1972 Aug 30 2:00
+ -7:00 - MST
+
+
+# Northwest Territories, Yukon
+
+# From Paul Eggert (1996-06-12):
+# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
+# Shanks's table for Watson Lake is corrupted, so we have no data there.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Yukon 1918 only - Apr 14 2:00 1:00 D
-Rule Yukon 1918 only - Oct 27 2:00 0 S
-Rule Yukon 1919 only - May 25 2:00 1:00 D
-Rule Yukon 1919 only - Nov 1 0:00 0 S
-Rule Yukon 1942 only - Feb 9 2:00 1:00 D
-Rule Yukon 1965 only - Apr 25 0:00 1:00 D
-Rule Yukon 1965 only - Oct 31 2:00 0 S
-Rule Yukon 1980 1986 - Apr lastSun 2:00 1:00 D
-Rule Yukon 1980 max - Oct lastSun 2:00 0 S
-Rule Yukon 1987 max - Apr Sun>=1 2:00 1:00 D
+Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
+Rule NT_YK 1918 only - Oct 27 2:00 0 S
+Rule NT_YK 1919 only - May 25 2:00 1:00 D
+Rule NT_YK 1919 only - Nov 1 0:00 0 S
+Rule NT_YK 1942 only - Feb 9 2:00 1:00 D
+Rule NT_YK 1945 only - Sep 30 2:00 0 S
+# 0:00 ??
+Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
+Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
+Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
+Rule NT_YK 1980 max - Oct lastSun 2:00 0 S
+Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Pangnirtung -4:22:56 - LMT 1884
+ -4:00 NT_YK A%sT
+Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay
+ -5:00 NT_YK E%sT
+Zone America/Rankin_Inlet -6:08:40 - LMT 1884
+ -6:00 NT_YK C%sT
+Zone America/Yellowknife -7:37:24 - LMT 1884
+ -7:00 NT_YK M%sT
+Zone America/Inuvik -8:54:00 - LMT 1884
+ -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
+ -7:00 NT_YK M%sT
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
- -9:00 Yukon Y%sT 1966 Jul
- -8:00 Yukon P%sT
-# Parts of Yukon (e.g. Dawson) didn't switch to -8:00 until 1973 Oct 28.
+ -9:00 NT_YK Y%sT 1966 Jul 1 2:00
+ -8:00 NT_YK P%sT
+Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
+ -9:00 NT_YK Y%sT 1973 Oct lastSun 2:00
+ -8:00 NT_YK P%sT
+
###############################################################################
@@ -868,6 +948,10 @@ Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
# The Decree was published in Mexico's Official Newspaper on January 4th.
#
# -------------- End Forwarded Message --------------
+# From Paul Eggert (1996-06-12):
+# For an English translation of the decree,
+# see ``Diario Oficial: Time Zone Changeover'',
+# <URL:http://mexico-travel.com/extra/timezone_eng.html> (1996-01-04).
# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S