[tz] Australian time zone abbreviations
shaun.bouckaert at gmail.com
Sun Nov 6 10:20:15 UTC 2011
Having long been irked by the fact that the abbreviation for Brisbane
is EST, as opposed to AEST, I read through the time zone data file and
found that the reason for this was a discussion back in 2001.
I'm not sure if this existed then, but there is a federal government
web page that lists the time zones and their abbreviations.
With a land mass close to 7.7 million square kilometres, Australia is
the world’s sixth largest country and is divided into three separate
Australian Eastern Standard Time (AEST)
Covers the eastern states of Queensland, New South Wales (with the
exception of the town of Broken Hill), Victoria, Tasmania and the
Australian Capital Territory.
AEST is equal to Coordinated Universal Time plus 10 hours (UTC +10).
Australian Central Standard Time (ACST)
Covers the state of South Australia, the town of Broken Hill in
western New South Wales and the Northern Territory.
ACST is equal to Coordinated Universal Time plus 9 ½ hours (UTC +9 ½).
Australian Western Standard Time (AWST)
Covers Western Australia.
AWST is equal to Coordinated Universal Time plus 8 hours (UTC +8).
Daylight Saving Time (DST) is the practice of advancing clocks one
hour during the warmer months of the year. In Australia, Daylight
saving is observed in New South Wales, Victoria, South Australia,
Tasmania, and the Australian Capital Territory.
Daylight Saving Time begins at 2am (AEST) on the first Sunday in
October and ends at 2am (AEST) (which is 3am Australian Eastern
Daylight Time) on the first Sunday in April.
Where Daylight saving is observed:
NSW, ACT,Vic and Tas move from AEST to Australian Eastern Daylight
Time (AEDT), and clocks are advanced to UTC +11.
SA and the NSW town of Broken Hill move from ACST to Australian
Central Daylight Time (ACDT), and clocks are advanced to UTC +10 ½.
Daylight saving is not observed in Queensland, the Northern Territory
or Western Australia.
I believe that the abbreviations used on the federal government
website should be used.
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