This is like the previous change, except it entails a change to zone.tab. The America/Montreal entry was created only because we mistakenly thought that Montreal's and Toronto's post-1970 time stamps differed. * backward, northamerica (America/Montreal): Now a 'backward' link to America/Toronto. * northamerica (Mont): Remove rules; no longer needed. (America/Thunder_Bay): Refer to Toronto rules, not Mont. This doesn't change any time stamps. * zone.tab (America/Montreal): Remove. (America/Toronto): Say that it also covers most of Quebec. --- backward | 1 + northamerica | 46 +++------------------------------------------- zone.tab | 3 +-- 3 files changed, 5 insertions(+), 45 deletions(-) diff --git a/backward b/backward index 2ee440d..efb5353 100644 --- a/backward +++ b/backward @@ -34,6 +34,7 @@ Link America/Kentucky/Louisville America/Louisville Link America/Puerto_Rico America/Lower_Princes Link America/Puerto_Rico America/Marigot Link America/Argentina/Mendoza America/Mendoza +Link America/Toronto America/Montreal Link America/Puerto_Rico America/Montserrat Link America/Toronto America/Nassau Link America/Puerto_Rico America/Port_of_Spain diff --git a/northamerica b/northamerica index 5d8ad63..6210318 100644 --- a/northamerica +++ b/northamerica @@ -1342,8 +1342,8 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # Quebec # From Paul Eggert (2013-08-26): -# Shanks & Pottenger write that since 1970 most of Quebec has been -# like Montreal. +# Since 1970 most of Quebec has been like Toronto. +# See America/Toronto. # Matthews and Vincent (1998) also write that Quebec east of the -63 # meridian is supposed to observe AST, but residents as far east as @@ -1359,46 +1359,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # Shanks & Pottenger who have this region observing AST/ADT. # See America/Puerto_Rico. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Mont 1917 only - Mar 25 2:00 1:00 D -Rule Mont 1917 only - Apr 24 0:00 0 S -Rule Mont 1919 only - Mar 31 2:30 1:00 D -Rule Mont 1919 only - Oct 25 2:30 0 S -Rule Mont 1920 only - May 2 2:30 1:00 D -Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S -Rule Mont 1921 only - May 1 2:00 1:00 D -Rule Mont 1922 only - Apr 30 2:00 1:00 D -Rule Mont 1924 only - May 17 2:00 1:00 D -Rule Mont 1924 1926 - Sep lastSun 2:30 0 S -Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D -# The 1927-to-1937 rules can be expressed more simply as -# Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D -# Rule Mont 1927 1937 - Sep lastSat 24:00 0 S -# The rules below avoid use of 24:00 -# (which pre-1998 versions of zic cannot handle). -Rule Mont 1927 only - May 1 0:00 1:00 D -Rule Mont 1927 1932 - Sep lastSun 0:00 0 S -Rule Mont 1928 1931 - Apr lastSun 0:00 1:00 D -Rule Mont 1932 only - May 1 0:00 1:00 D -Rule Mont 1933 1940 - Apr lastSun 0:00 1:00 D -Rule Mont 1933 only - Oct 1 0:00 0 S -Rule Mont 1934 1939 - Sep lastSun 0:00 0 S -Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D -Rule Mont 1945 1948 - Sep lastSun 2:00 0 S -Rule Mont 1949 1950 - Oct lastSun 2:00 0 S -Rule Mont 1951 1956 - Sep lastSun 2:00 0 S -Rule Mont 1957 1973 - Oct lastSun 2:00 0 S - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Montreal -4:54:16 - LMT 1884 - -5:00 Mont E%sT 1918 - -5:00 Canada E%sT 1919 - -5:00 Mont E%sT 1942 Feb 9 2:00s - -5:00 Canada E%sT 1946 - -5:00 Mont E%sT 1974 - -5:00 Canada E%sT - - # Ontario # From Paul Eggert (2006-07-09): @@ -1619,7 +1579,7 @@ Zone America/Thunder_Bay -5:57:00 - LMT 1895 -6:00 - CST 1910 -5:00 - EST 1942 -5:00 Canada E%sT 1970 - -5:00 Mont E%sT 1973 + -5:00 Toronto E%sT 1973 -5:00 - EST 1974 -5:00 Canada E%sT Zone America/Nipigon -5:53:04 - LMT 1895 diff --git a/zone.tab b/zone.tab index b4407f1..769432b 100644 --- a/zone.tab +++ b/zone.tab @@ -122,8 +122,7 @@ CA +4612-05957 America/Glace_Bay Atlantic Time - Nova Scotia - places that did n CA +4606-06447 America/Moncton Atlantic Time - New Brunswick CA +5320-06025 America/Goose_Bay Atlantic Time - Labrador - most locations CA +5125-05707 America/Blanc-Sablon Atlantic Standard Time - Quebec - Lower North Shore -CA +4531-07334 America/Montreal Eastern Time - Quebec - most locations -CA +4339-07923 America/Toronto Eastern Time - Ontario - most locations +CA +4339-07923 America/Toronto Eastern Time - Ontario & Quebec - most locations CA +4901-08816 America/Nipigon Eastern Time - Ontario & Quebec - places that did not observe DST 1967-1973 CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario CA +6344-06828 America/Iqaluit Eastern Time - east Nunavut - most locations -- 1.8.1.2