timezone/systemv

   1 # @(#)systemv   7.2
   2
   3 # Old rules, should the need arise.
   4 # No attempt is made to handle Newfoundland, since it cannot be expressed
   5 # using the System V "TZ" scheme (half-hour offset), or anything outside
   6 # North America (no support for non-standard DST start/end dates), nor
   7 # the change in the DST rules in the US in 1987 (can't split between
   8 # Canada, with no changes, and the US)
   9 #
  10 # Be sure to compile this *without* leap second correction for true conformance.
  11
  12 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
  13 Rule    SystemV min     1973    -       Apr     lastSun 2:00    1:00    D
  14 Rule    SystemV min     1973    -       Oct     lastSun 2:00    0       S
  15 Rule    SystemV 1974    only    -       Jan     6       2:00    1:00    D
  16 Rule    SystemV 1974    only    -       Nov     lastSun 2:00    0       S
  17 Rule    SystemV 1975    only    -       Feb     23      2:00    1:00    D
  18 Rule    SystemV 1975    only    -       Oct     lastSun 2:00    0       S
  19 Rule    SystemV 1976    max     -       Apr     lastSun 2:00    1:00    D
  20 Rule    SystemV 1976    max     -       Oct     lastSun 2:00    0       S
  21
  22 # Zone  NAME            GMTOFF  RULES/SAVE      FORMAT  [UNTIL]
  23 Zone    SystemV/AST4ADT -4:00   SystemV         A%sT
  24 Zone    SystemV/EST5EDT -5:00   SystemV         E%sT
  25 Zone    SystemV/CST6CDT -6:00   SystemV         C%sT
  26 Zone    SystemV/MST7MDT -7:00   SystemV         M%sT
  27 Zone    SystemV/PST8PDT -8:00   SystemV         P%sT
  28 Zone    SystemV/YST9YDT -9:00   SystemV         Y%sT
  29 Zone    SystemV/AST4    -4:00   -               AST
  30 Zone    SystemV/EST5    -5:00   -               EST
  31 Zone    SystemV/CST6    -6:00   -               CST
  32 Zone    SystemV/MST7    -7:00   -               MST
  33 Zone    SystemV/PST8    -8:00   -               PST
  34 Zone    SystemV/YST9    -9:00   -               YST
  35 Zone    SystemV/HST10   -10:00  -               HST