Australian Time Zones
Australia uses three main time zones. Uniquely, some states observe daylight saving time while neighbouring states do not, making inter-state scheduling complex.
The Three Australian Time Zones
Australian Eastern Standard Time
Queensland, NSW, Victoria, Tasmania, ACT
NSW, VIC, TAS, ACT observe AEDT (UTC+11) in summer. Queensland does NOT observe DST.
Australian Central Standard Time
South Australia, Northern Territory
South Australia observes ACDT (UTC+10:30) in summer. The Northern Territory does NOT observe DST.
Australian Western Standard Time
Western Australia
Western Australia does not observe DST.
Daylight Saving Time in Australia
DST runs from the first Sunday in October to the first Sunday in April (Southern Hemisphere summer). Queensland, Western Australia, and the Northern Territory do NOT observe DST — they stay on standard time year-round. This creates a shifting time difference between, for example, Sydney and Brisbane during summer.
Time Zone by State and Territory
| State / Territory | Time Zone | Observes DST |
|---|---|---|
| NSW, VIC, TAS, ACT | AEST / AEDT | Yes |
| QLD | AEST | No |
| SA | ACST / ACDT | Yes |
| NT | ACST | No |
| WA | AWST | No |