systemv (1584B)
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 22 Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D 23 Rule SystemV 1976 max - Oct lastSun 2:00 0 S 24 25 # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] 26 ## Zone SystemV/AST4ADT -4:00 SystemV A%sT 27 ## Zone SystemV/EST5EDT -5:00 SystemV E%sT 28 ## Zone SystemV/CST6CDT -6:00 SystemV C%sT 29 ## Zone SystemV/MST7MDT -7:00 SystemV M%sT 30 ## Zone SystemV/PST8PDT -8:00 SystemV P%sT 31 ## Zone SystemV/YST9YDT -9:00 SystemV Y%sT 32 ## Zone SystemV/AST4 -4:00 - AST 33 ## Zone SystemV/EST5 -5:00 - EST 34 ## Zone SystemV/CST6 -6:00 - CST 35 ## Zone SystemV/MST7 -7:00 - MST 36 ## Zone SystemV/PST8 -8:00 - PST 37 ## Zone SystemV/YST9 -9:00 - YST 38 ## Zone SystemV/HST10 -10:00 - HST