In the asia file, there is a rule PRC defined which is used for quite a number of timezones: Rule PRC 1986 only - May 4 0:00 1:00 D Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D However, putting it to use in Macau seems superfluous since the PRC rule is inactive since 1991, and it is implemented for Macau only in december 1999: # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Macau 7:34:20 - LMT 1912 8:00 Macau MO%sT 1999 Dec 20 # return to China 8:00 PRC C%sT Jesper Nørgaard Welen Email: jnorgard@Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the free program World Time Explorer, I made: http://www.cimmyt.org/timezone/index.htm
Jesper Norgaard Welen <jnorgard@prodigy.net.mx> writes:
In the asia file, there is a rule PRC defined which is used for quite a number of timezones: However, putting it to use in Macau seems superfluous since the PRC rule is inactive since 1991, and it is implemented for Macau only in december 1999:
It is superfluous now, but if the PRC ever reinstitutes DST it will almost certainly apply to Asia/Macau as well, so I suspect it's somewhat more likely to be less work in the future if we just leave things be now. I suspect Hong Kong would be similar as far as DST, but I've held off on touching Hong Kong since my vague impression is that "HKT" is still more popular than "CST" as an English-language abbreviation for the time in Hong Kong.
participants (2)
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Jesper Norgaard Welen -
Paul Eggert