1*0a6a1f1dSLionel Sambuc# This file is in the public domain, so clarified as of 2*0a6a1f1dSLionel Sambuc# 2009-05-17 by Arthur David Olson. 3*0a6a1f1dSLionel Sambuc 4*0a6a1f1dSLionel Sambuc# Old rules, should the need arise. 5*0a6a1f1dSLionel Sambuc# No attempt is made to handle Newfoundland, since it cannot be expressed 6*0a6a1f1dSLionel Sambuc# using the System V "TZ" scheme (half-hour offset), or anything outside 7*0a6a1f1dSLionel Sambuc# North America (no support for non-standard DST start/end dates), nor 8*0a6a1f1dSLionel Sambuc# the changes in the DST rules in the US after 1976 (which occurred after 9*0a6a1f1dSLionel Sambuc# the old rules were written). 10*0a6a1f1dSLionel Sambuc# 11*0a6a1f1dSLionel Sambuc# If you need the old rules, uncomment ## lines. 12*0a6a1f1dSLionel Sambuc# Compile this *without* leap second correction for true conformance. 13*0a6a1f1dSLionel Sambuc 14*0a6a1f1dSLionel Sambuc# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 15*0a6a1f1dSLionel SambucRule SystemV min 1973 - Apr lastSun 2:00 1:00 D 16*0a6a1f1dSLionel SambucRule SystemV min 1973 - Oct lastSun 2:00 0 S 17*0a6a1f1dSLionel SambucRule SystemV 1974 only - Jan 6 2:00 1:00 D 18*0a6a1f1dSLionel SambucRule SystemV 1974 only - Nov lastSun 2:00 0 S 19*0a6a1f1dSLionel SambucRule SystemV 1975 only - Feb 23 2:00 1:00 D 20*0a6a1f1dSLionel SambucRule SystemV 1975 only - Oct lastSun 2:00 0 S 21*0a6a1f1dSLionel SambucRule SystemV 1976 max - Apr lastSun 2:00 1:00 D 22*0a6a1f1dSLionel SambucRule SystemV 1976 max - Oct lastSun 2:00 0 S 23*0a6a1f1dSLionel Sambuc 24*0a6a1f1dSLionel Sambuc# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] 25*0a6a1f1dSLionel Sambuc## Zone SystemV/AST4ADT -4:00 SystemV A%sT 26*0a6a1f1dSLionel Sambuc## Zone SystemV/EST5EDT -5:00 SystemV E%sT 27*0a6a1f1dSLionel Sambuc## Zone SystemV/CST6CDT -6:00 SystemV C%sT 28*0a6a1f1dSLionel Sambuc## Zone SystemV/MST7MDT -7:00 SystemV M%sT 29*0a6a1f1dSLionel Sambuc## Zone SystemV/PST8PDT -8:00 SystemV P%sT 30*0a6a1f1dSLionel Sambuc## Zone SystemV/YST9YDT -9:00 SystemV Y%sT 31*0a6a1f1dSLionel Sambuc## Zone SystemV/AST4 -4:00 - AST 32*0a6a1f1dSLionel Sambuc## Zone SystemV/EST5 -5:00 - EST 33*0a6a1f1dSLionel Sambuc## Zone SystemV/CST6 -6:00 - CST 34*0a6a1f1dSLionel Sambuc## Zone SystemV/MST7 -7:00 - MST 35*0a6a1f1dSLionel Sambuc## Zone SystemV/PST8 -8:00 - PST 36*0a6a1f1dSLionel Sambuc## Zone SystemV/YST9 -9:00 - YST 37*0a6a1f1dSLionel Sambuc## Zone SystemV/HST10 -10:00 - HST 38