1 # <pre>
   2 # This file is in the public domain, so clarified as of
   3 # 2009-05-17 by Arthur David Olson.
   4 
   5 # Old rules, should the need arise.
   6 # No attempt is made to handle Newfoundland, since it cannot be expressed
   7 # using the System V "TZ" scheme (half-hour offset), or anything outside
   8 # North America (no support for non-standard DST start/end dates), nor
   9 # the changes in the DST rules in the US after 1976 (which occurred after
  10 # the old rules were written).
  11 #
  12 # If you need the old rules, uncomment ## lines.
  13 # Compile this *without* leap second correction for true conformance.
  14 
  15 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
  16 Rule    SystemV min     1973    -       Apr     lastSun 2:00    1:00    D
  17 Rule    SystemV min     1973    -       Oct     lastSun 2:00    0       S
  18 Rule    SystemV 1974    only    -       Jan     6       2:00    1:00    D
  19 Rule    SystemV 1974    only    -       Nov     lastSun 2:00    0       S
  20 Rule    SystemV 1975    only    -       Feb     23      2:00    1:00    D
  21 Rule    SystemV 1975    only    -       Oct     lastSun 2:00    0       S

   1 # This file is in the public domain, so clarified as of
   2 # 2009-05-17 by Arthur David Olson.
   3 
   4 # Old rules, should the need arise.
   5 # No attempt is made to handle Newfoundland, since it cannot be expressed
   6 # using the System V "TZ" scheme (half-hour offset), or anything outside
   7 # North America (no support for non-standard DST start/end dates), nor
   8 # the changes in the DST rules in the US after 1976 (which occurred after
   9 # the old rules were written).
  10 #
  11 # If you need the old rules, uncomment ## lines.
  12 # Compile this *without* leap second correction for true conformance.
  13 
  14 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
  15 Rule    SystemV min     1973    -       Apr     lastSun 2:00    1:00    D
  16 Rule    SystemV min     1973    -       Oct     lastSun 2:00    0       S
  17 Rule    SystemV 1974    only    -       Jan     6       2:00    1:00    D
  18 Rule    SystemV 1974    only    -       Nov     lastSun 2:00    0       S
  19 Rule    SystemV 1975    only    -       Feb     23      2:00    1:00    D
  20 Rule    SystemV 1975    only    -       Oct     lastSun 2:00    0       S