When Does Daylight Saving Start in Australia?

·Published: 8 August 2026

Daylight saving starts in participating parts of Australia on the first Sunday in October. At 2:00 am local standard time, clocks move forward to 3:00 am, so that hour disappears. The season ends on the first Sunday in April, when clocks move back by one hour. In 2026, the changes fall on 5 April and 4 October; in 2027, they fall on 4 April and 3 October; and in 2028, they fall on 2 April and 1 October. These changes do not apply across the whole country, so your state or territory matters as much as the date.

Which parts of Australia change their clocks?

New South Wales, Victoria, Tasmania, South Australia and the Australian Capital Territory observe the October-to-April daylight saving season. Queensland, Western Australia and the Northern Territory do not move their clocks. That divide creates an easy source of confusion: Brisbane and Sydney share the same clock time during winter, but Sydney runs one hour ahead once daylight saving begins. Perth remains three hours behind Sydney during that season, while Darwin is one and a half hours behind Sydney.

The change occurs according to local time in each participating jurisdiction. At the October transition, 1:59:59 am standard time is followed by 3:00 am daylight time. When the season ends in April, the clock reaches 3:00 am daylight time and returns to 2:00 am standard time. Describing both boundaries as 2:00 am local standard time is accurate, although the April change is often displayed to residents as clocks moving back from 3:00 am to 2:00 am.

Australia’s several time zones make interstate planning more complicated during summer. A video call between Brisbane and Melbourne that was comfortably scheduled at the same local hour in July will be one hour apart after the October change. South Australia also keeps its half-hour offset: Adelaide moves from Australian Central Standard Time to Australian Central Daylight Time, while Darwin stays on standard time. Before recording an interstate appointment, confirm the city as well as the written time.

Why Queensland does not use daylight saving

Queensland trialled daylight saving before voters were asked to decide its future. On 22 February 1992, the state held a referendum asking whether voters favoured daylight saving. The proposal failed, with a majority of formal votes opposing it, and legislation was subsequently prepared to repeal the summer-time arrangement. That referendum result is the direct historical reason Queensland remained on standard time rather than joining the south-eastern states each October.

The voting pattern also showed that opinions varied across Queensland. Opposition was especially strong in many northern and western electorates, while several electorates in the south-east supported the proposal. Queensland stretches a long way north to south, so a clock change does not affect every community’s daylight in the same way. It is safer to describe the state’s position as the outcome of a statewide vote than to assign one motive to every Queensland voter.

What happens to alarms and timers?

A browser alarm normally reads the date and time supplied by your device. If your computer or phone is configured to adjust automatically for the correct Australian zone, its displayed time should move forward with the operating system. An alarm set for 7:00 am after the transition should therefore sound at 7:00 am daylight time. However, behaviour around a skipped time such as 2:30 am can vary between browsers and alarm implementations because that local time does not exist on the October changeover morning.

A countdown timer is less ambiguous because it measures a duration rather than waiting for a named wall-clock time. A 30-minute timer started shortly before the change should still represent 30 elapsed minutes even though the displayed clock jumps ahead. For a browser alarm, keep the tab open, keep the device awake and allow sound or notifications. A browser alarm cannot sound reliably after its tab has been closed or while the device is asleep. For an early appointment on the transition Sunday, confirm the device’s selected time zone and recreate the alarm after the clock has changed if the timing is critical.

Planning for the October change

Most internet-connected phones and computers update automatically, but wall clocks, ovens, car displays and older devices may still need manual adjustment. The larger risk is often not the clock itself but an interstate calendar entry saved without a recognised time zone. A meeting labelled only “9:00 am” can mean different moments in Brisbane, Sydney, Adelaide, Darwin and Perth during the daylight saving season. Using the city name in travel plans and invitations makes the intended time clear without requiring anyone to calculate the offset from memory.