1 # <pre> 2 # @(#)systemv 8.2 3 # This file is in the public domain, so clarified as of 4 # 2009-05-17 by Arthur David Olson. 5 6 # Old rules, should the need arise. 7 # No attempt is made to handle Newfoundland, since it cannot be expressed 8 # using the System V "TZ" scheme (half-hour offset), or anything outside 9 # North America (no support for non-standard DST start/end dates), nor 10 # the changes in the DST rules in the US after 1976 (which occurred after 11 # the old rules were written). 12 # 13 # If you need the old rules, uncomment ## lines. 14 # Compile this *without* leap second correction for true conformance. 15 16 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 17 Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D 18 Rule SystemV min 1973 - Oct lastSun 2:00 0 S 19 Rule SystemV 1974 only - Jan 6 2:00 1:00 D 20 Rule SystemV 1974 only - Nov lastSun 2:00 0 S 21 Rule SystemV 1975 only - Feb 23 2:00 1:00 D 22 Rule SystemV 1975 only - Oct lastSun 2:00 0 S 23 Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D 24 Rule SystemV 1976 max - Oct lastSun 2:00 0 S 25 26 # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] 27 ## Zone SystemV/AST4ADT -4:00 SystemV A%sT 28 ## Zone SystemV/EST5EDT -5:00 SystemV E%sT 29 ## Zone SystemV/CST6CDT -6:00 SystemV C%sT 30 ## Zone SystemV/MST7MDT -7:00 SystemV M%sT 31 ## Zone SystemV/PST8PDT -8:00 SystemV P%sT 32 ## Zone SystemV/YST9YDT -9:00 SystemV Y%sT 33 ## Zone SystemV/AST4 -4:00 - AST 34 ## Zone SystemV/EST5 -5:00 - EST 35 ## Zone SystemV/CST6 -6:00 - CST 36 ## Zone SystemV/MST7 -7:00 - MST 37 ## Zone SystemV/PST8 -8:00 - PST 38 ## Zone SystemV/YST9 -9:00 - YST 39 ## Zone SystemV/HST10 -10:00 - HST 40
