Australian time zones

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Mainland Australia has three official time zones. The full names of the time zones are usually shortened by dropping the Australian. Most Australian external territories are in different time zones. Many parts of Australia have daylight saving time.

 
Australian time zones during standard time
Official Australian time zones
Full name
of time zone
Australian Western
Standard Time
(WST)
Australian Central
Standard Time
(ACST)
Australian Eastern
Standard Time
(AEST)
Short name
of time zone
Western
Standard Time
(WST)
Central
Standard Time
(CST)
Eastern
Standard Time
(EST)
Hours and minutes
ahead of GMT
+ 8:00 + 9:30 +10:00
State
or territory
Western Australia Northern Territory
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania

History[change | change source]

The three official standard time zones were set up in February 1895.

Originally South Australia was nine hours ahead of Greenwich Mean Time (GMT) but in May 1899 they added another thirty minutes to that. Some people have disliked having this non-whole number of hours difference. In 1986 and 1994 they tried to take the thirty minutes away again or add another thirty minutes but they failed.

When the Australian Capital Territory separated from New South Wales they kept using Eastern Standard Time. When the Northern Territory separated from South Australia they kept using Central Standard Time.

Changes[change | change source]

There have been some other changes.

  • In Broken Hill in far-western New South Wales they use Central Standard Time.
  • On Lord Howe Island they use set their clocks 10:30 ahead of GMT.
  • Some towns on the Eyre Highway in the south-east corner of Western Australia, between the South Australian border almost as far as Caiguna, use Central Western Standard Time. This is an unofficial time zone 45 minutes ahead of the official Western Australian time.
  • The Indian Pacific train has its own time zone when travelling between Kalgoorlie and Port Augusta. They call it "train time".

Outside territories[change | change source]

Australia's many outside territories follow their own time zones. None follow daylight saving time.

Territory Standard
Heard and McDonald Islands UTC+5
Cocos (Keeling) Islands UTC+6:30
Christmas Island CXT UTC+7
Norfolk Island NFT UTC+11:30
Australian Antarctic Territory - Mawson UTC+6
Australian Antarctic Territory - Davis UTC+7
Australian Antarctic Territory - Casey UTC+8

Daylight saving time[change | change source]

South Australia, New South Wales, the Australian Capital Territory, Victoria and Tasmania use daylight saving time every year. In these regions daylight saving time begins on the first Sunday in October at 2:00 am local standard time, and ends on the first Sunday in April at 3:00 am local daylight saving time. The starting and finishing times can also be changed when there are special events, such as the Olympic and Commonwealth Games, in Australia.

The Northern Territory does not have daylight saving time. Queensland does not have daylight savings time either. Many people who live in the south east corner of Queensland would like to have. But many people who live in the rural towns and farming regions of Queensland are against it.

In Western Australia they have voted on daylight saving time three times: in 1975, 1984 and 1992. Each time people voted "No". Western Australia is trying daylight saving time again from spring 2006 until autumn 2009. Then they are going to vote again.

References[change | change source]

Other websites[change | change source]