Australia Time Zones

How many time zones does Australia have?

Australia has three standard time zones: Australian Western Standard Time (AWST, UTC+08:00), Australian Central Standard Time (ACST, UTC+09:30), and Australian Eastern Standard Time (AEST, UTC+10:00). Some states also observe Daylight Saving Time, so in summer those areas shift to UTC+10:30 (ACDT) or UTC+11:00 (AEDT).

This page shows five live clocks for those mainland zones: Perth (AWST), Darwin (ACST year-round), Adelaide (ACST/ACDT), Brisbane (AEST year-round), and Sydney (AEST/AEDT). A few small places use unofficial local offsets not shown here—most notably Eucla and nearby towns on the WA/SA border (about UTC+08:45).

What do Australia’s main time zones cover?

Australian Western Standard Time (IANA ID: Australia/Perth)

UTC+08:00 year-round. Covers Western Australia. Example city on this page: Perth.

Australian Central Standard/Daylight Time (IANA ID: Australia/Adelaide, Australia/Darwin)

Standard: UTC+09:30 | Daylight: UTC+10:30. Covers South Australia and Broken Hill in New South Wales. The Northern Territory stays on ACST year-round (no DST). Example cities on this page: Adelaide and Darwin.

Australian Eastern Standard/Daylight Time (IANA ID: Australia/Sydney, Australia/Brisbane)

Standard: UTC+10:00 | Daylight: UTC+11:00. Covers New South Wales (except Broken Hill), Victoria, Tasmania, and the ACT—including Canberra, which follows the same Eastern clocks as Sydney. Queensland stays on AEST year-round (no DST). Example cities on this page: Sydney and Brisbane.

The map near the top of this page is a static color-coded image of Australia’s time zones. It is not an interactive or region-by-region boundary tool.

How does Daylight Saving Time work in Australia?

Where DST applies, clocks spring forward one hour on the first Sunday in October at 2:00 a.m. local standard time (they jump to 3:00 a.m.). Clocks fall back one hour on the first Sunday in April at 3:00 a.m. local daylight time (back to 2:00 a.m.).

DST is observed in New South Wales, Victoria, Tasmania, the ACT, and South Australia. Queensland, Western Australia, and the Northern Territory stay on standard time year-round.

On this page, Adelaide and Sydney change with DST; Perth, Darwin, and Brisbane do not.

Southern Hemisphere note: Australia’s seasons are the opposite of North America and Europe. Australian DST runs through the southern summer—roughly October to April—so when the U.S. or Europe is on standard (“winter”) time, parts of Australia may still be on daylight time, and the reverse is true around the northern summer.

What is the time difference across Australia?

Relative to Sydney (Eastern Time on this page):

• Perth (AWST): 2 hours behind in winter; 3 hours behind in summer when NSW is on AEDT.
• Darwin (ACST year-round): 30 minutes behind in winter; 1.5 hours behind in summer.
• Adelaide (ACST/ACDT): 30 minutes behind Sydney year-round, because both change clocks on the same DST weekends. Versus Brisbane (no DST), the gap flips with the seasons—Adelaide is 30 minutes behind in winter and 30 minutes ahead in summer.
• Brisbane (AEST year-round): same as Sydney in winter; 1 hour behind Sydney in summer when NSW is on AEDT.

For cities outside Australia, use Australia ↔ Regional Compare above to line up New Zealand or Asian zones next to Australian zones The comparison tool uses Sydney (AEST/AEDT) as its reference city. You can also convert any other pairing in the Time Zone Converter, open New Zealand time zones for southern DST seasons that track a similar calendar (including the 45-minute Chatham offset), read Australia DST: Sydney vs Brisbane for Queensland rules, or plan several cities in the World Meeting Planner.

Who sets Australia’s time zones?

In Australia, legal local time and Daylight Saving Time (DST) are set by the states and territories, not by one national DST rule. Each jurisdiction decides its standard offset and whether clocks change with the seasons. That is why Queensland, Western Australia, and the Northern Territory can stay on standard time year-round while New South Wales, Victoria, Tasmania, the ACT, and South Australia observe DST.

The Commonwealth maintains Australia’s official UTC time scale under national measurement law, but the clock you use day to day still comes from state and territory rules.

A brief history of Australia’s time zones

Australia’s standard time zones took shape in the 1890s, when the colonies adopted standard railway time instead of local solar time. This established the familiar Western, Central, and Eastern pattern still used today.

Daylight Saving Time came later and has never been uniform across the country. States and territories have adopted, ended, or rejected DST at different times. Today, October-to-April schedule is used by New South Wales, Victoria, Tasmania, the ACT, and South Australia, while Queensland, Western Australia, and the Northern Territory remain on standard time year-round.

Where does this page get its time data?

The clocks and zone labels on this page follow the IANA Time Zone Database (Australia/Perth, Australia/Darwin, Australia/Adelaide, Australia/Brisbane, Australia/Sydney). Adelaide and Sydney change with Daylight Saving Time; Perth, Darwin, and Brisbane remain on fixed standard time year-round. For a broader overview, see Time in Australia (opens in new tab).