1192886Sedwin# This file is in the public domain, so clarified as of 2192886Sedwin# 2009-05-17 by Arthur David Olson. 32744Swollman 42744Swollman# Old rules, should the need arise. 52744Swollman# No attempt is made to handle Newfoundland, since it cannot be expressed 62744Swollman# using the System V "TZ" scheme (half-hour offset), or anything outside 72744Swollman# North America (no support for non-standard DST start/end dates), nor 8153667Swollman# the changes in the DST rules in the US after 1976 (which occurred after 975264Swollman# the old rules were written). 102744Swollman# 11153667Swollman# If you need the old rules, uncomment ## lines. 1275264Swollman# Compile this *without* leap second correction for true conformance. 132744Swollman 142744Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 15153667SwollmanRule SystemV min 1973 - Apr lastSun 2:00 1:00 D 16153667SwollmanRule SystemV min 1973 - Oct lastSun 2:00 0 S 17153667SwollmanRule SystemV 1974 only - Jan 6 2:00 1:00 D 18153667SwollmanRule SystemV 1974 only - Nov lastSun 2:00 0 S 19153667SwollmanRule SystemV 1975 only - Feb 23 2:00 1:00 D 20153667SwollmanRule SystemV 1975 only - Oct lastSun 2:00 0 S 21153667SwollmanRule SystemV 1976 max - Apr lastSun 2:00 1:00 D 22153667SwollmanRule SystemV 1976 max - Oct lastSun 2:00 0 S 232744Swollman 242744Swollman# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] 2575264Swollman## Zone SystemV/AST4ADT -4:00 SystemV A%sT 2675264Swollman## Zone SystemV/EST5EDT -5:00 SystemV E%sT 2775264Swollman## Zone SystemV/CST6CDT -6:00 SystemV C%sT 2875264Swollman## Zone SystemV/MST7MDT -7:00 SystemV M%sT 2975264Swollman## Zone SystemV/PST8PDT -8:00 SystemV P%sT 3075264Swollman## Zone SystemV/YST9YDT -9:00 SystemV Y%sT 3175264Swollman## Zone SystemV/AST4 -4:00 - AST 3275264Swollman## Zone SystemV/EST5 -5:00 - EST 3375264Swollman## Zone SystemV/CST6 -6:00 - CST 3475264Swollman## Zone SystemV/MST7 -7:00 - MST 3575264Swollman## Zone SystemV/PST8 -8:00 - PST 3675264Swollman## Zone SystemV/YST9 -9:00 - YST 3775264Swollman## Zone SystemV/HST10 -10:00 - HST 38