The clocks will once again move forward an hour when daylight saving starts in early October, with some states also marking the day with a long weekend.
The change means later sunsets as the temperatures begin to warm in the lead-up to summer.
New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania will observe daylight saving while Queensland, Western Australia and the Northern Territory will not.
EXPLAINED: Why do we have daylight savings?
When is daylight saving?
Daylight saving kicks in on Sunday, October 6 at 2am AEST.
Do the clocks go forward or back?
Clocks will move up an hour.
At 2am AEST, the hour hand is turned forward to 3am AEDT.
Do we gain or lose an hour of sleep?
We will lose an hour of sleep so be prepared to wake up on October 6 feeling a little groggy.
In exchange, we will get an extra hour of sunlight to enjoy spring and summer outside.
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What is the time difference between states and territories?
From October, NSW, the ACT, Victoria and Tasmania will be in the Australian Eastern Daylight Time zone.
Queensland will stay on Australian Eastern Standard Time and be one hour ahead of daylight saving states.
South Australia will follow Australian Central Daylight Time and be half an hour behind daylight saving states.
Western Australia will stay on Australian Western Standard Time and will be three hours behind daylight saving states.
The NT will stay on Australian Central Standard Time and will be an hour and a half behind daylight saving states.
So when it is 12pm in NSW, the ACT, Victoria and Tasmania, it will be 11am in Queensland, 11.30am in South Australia, 9am in Western Australia and 10.30am in the NT.
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When does daylight saving end?
Daylight saving will end on Sunday, April 6 2025 at 3am AEDT, when clocks are turned back to 2am AEST.
Why do we have daylight saving?
Australia first observed daylight saving during World War I and World War II in an effort to reduce energy usage following positive reports from Britain, which had begun its own daylight saving.
Tasmania was the first state to permanently introduce daylight saving in 1967 as an emergency measure to save power and water supply during a drought.
In 1971, the state advised the rest of Australia to also adjust their clocks.
NSW, the ACT, Victoria and South Australia opted in to permanently observe daylight saving while Queensland, Western Australia and the NT did not.
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Who came up with daylight saving?
It is widely reported that Benjamin Franklin first introduced the idea in an essay titled An Economical Project in 1784.
But he simply suggested Parisians could get out of bed an hour earlier in the morning to save on their candle usage.
New Zealand entomologist George Vernon Hudson and British builder William Willett have been credited for creating the modern idea of daylight saving.
Hudson in 1895 proposed a two-hour shift forward in October and a shift back in March but it never came to happen.
Ten years later, Willett suggested setting the clocks ahead 20 minutes each Sunday in April and switching them back the same time each Sunday in September.
But it wasn’t until wartime in 1916 that Germany and then the United Kingdom adopted the measure to conserve energy.
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