Updated from ADO 96c, new rules for Mexico in 1996.

diff --git a/time/northamerica b/time/northamerica
index c62699f..d142790 100644 (file)
--- a/time/northamerica
+++ b/time/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica     7.21
+# @(#)northamerica     7.22
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -852,6 +852,15 @@ Zone America/Whitehorse    -9:00:12 -      LMT     1900 Aug 20
 # Shanks also says there are four zones, but disagrees about the fourth.
 # Instead of GMT-6 with DST, he says there's GMT-8 without DST.
 
+# From Paul Eggert (1996-02-07):
+# Today in news:4f90v4$g6g@news.internet.com.mx, Kevin Pitts
+# <bravo2@internet.com.mx> wrote that Mexico will use Horario de Verano (DST)
+# starting this year with the same rules as the US, and gave FIDE as a source.
+# (FIDE is a private organization that promotes efficient electrical use.)
+# On 1996-02-02 Mario Camou wrote that the transition times are Apr Sun>=1
+# 0:00 and Nov 1 0:00 but also wrote ``The DST-out date looks a bit fishy''.
+# Go with Pitts after 1996, and with Shanks before that.
+
 # From Shanks (1991):
 # Rule NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 Rule   Mexico  1922    only    -       Jan     1       0:00    0       S
@@ -863,6 +872,9 @@ Rule        Mexico  1943    only    -       Dec     16      0:00    1:00    D
 Rule   Mexico  1944    only    -       May     1       0:00    0       S
 Rule   Mexico  1950    only    -       Feb     12      0:00    1:00    D
 Rule   Mexico  1950    only    -       Jul     30      0:00    0       S
+Rule   Mexico  1996    max     -       Apr     Sun>=1  2:00    1:00    D
+Rule   Mexico  1996    max     -       Oct     lastSun 2:00    0       S
+#
 Rule   BajaN   1950    1966    -       Apr     lastSun 2:00    1:00    D
 Rule   BajaN   1950    1961    -       Sep     lastSun 2:00    0       S
 Rule   BajaN   1961    1966    -       Oct     lastSun 2:00    0       S
@@ -883,20 +895,22 @@ Zone America/Mazatlan     -7:05:40 -      LMT     1921 Dec 31 23:54:20
                        -6:00   -       CST     1942 Apr
                        -7:00   -       MST     1949 Jan 14
                        -8:00   -       PST     1970
-                       -7:00   -       MST
+                       -7:00   Mexico  M%sT
 Zone America/Tijuana   -7:48:04 -      LMT     1922 Jan  1  0:11:56
                        -8:00   -       PST     1927 Jun 10 23:00
                        -7:00   -       MST     1930 Nov 16
                        -8:00   -       PST     1942 Apr
                        -7:00   -       MST     1949 Jan 14
                        -8:00   BajaN   P%sT    1967 Apr lastSun 2:00
-                       -8:00   US      P%sT
+                       -8:00   US      P%sT    1996
+                       -8:00   Mexico  P%sT
 Zone America/Ensenada  -7:46:28 -      LMT     1922 Jan  1  0:13:32
                        -8:00   -       PST     1927 Jun 10 23:00
                        -7:00   -       MST     1930 Nov 16
                        -8:00   -       PST     1942 Apr
                        -7:00   -       MST     1949 Jan 14
-                       -8:00   -       PST
+                       -8:00   -       PST     1996
+                       -8:00   Mexico  P%sT
 #
 # Revillagigedo Is
 # no information