<P> The choice of whether to use daylight saving time (DST) in Australia is a matter for the individual states and territories . However, during World War I and World War II all states and territories had daylight saving . In 1968 Tasmania became the first state since the war to practise daylight saving . In 1971, New South Wales, Victoria, Queensland, South Australia, and the Australian Capital Territory followed Tasmania by observing daylight saving . Western Australia and the Northern Territory did not . Queensland abandoned daylight saving time in 1972 . Queensland and Western Australia have observed daylight saving over the past 40 years from time to time on trial bases . </P> <P> New South Wales, the Australian Capital Territory, Victoria, Tasmania and South Australia observe DST every year . This has resulted in three time zones becoming five during the daylight - saving period . South Australia time becomes UTC + 10: 30, called Central Daylight Time (CDT), possibly with "Australia" prefixed (ACDT). The time in the southeastern states becomes UTC + 11, using "Eastern" in the time zone name, Eastern Daylight Time (EDT), respectively Australia Eastern Daylight Time (AEDT). </P>

When did daylight saving first start in australia