1# tzdb data for System V rules (this file is obsolete) 2 3# This file is in the public domain, so clarified as of 4# 2009-05-17 by Arthur David Olson. 5 6# Old rules, should the need arise. 7# No attempt is made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 17Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D 18Rule SystemV min 1973 - Oct lastSun 2:00 0 S 19Rule SystemV 1974 only - Jan 6 2:00 1:00 D 20Rule SystemV 1974 only - Nov lastSun 2:00 0 S 21Rule SystemV 1975 only - Feb 23 2:00 1:00 D 22Rule SystemV 1975 only - Oct lastSun 2:00 0 S 23Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D 24Rule SystemV 1976 max - Oct lastSun 2:00 0 S 25 26# Zone NAME STDOFF 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