Time Zone Converter

Australia's time zones — a uniquely complicated situation

Australia's time zone situation is genuinely unusual. In winter, there are three main time zones: AWST (UTC+8, Western Australia), ACST (UTC+9:30, SA and NT), and AEST (UTC+10, eastern states). In summer, daylight saving complicates things further.

The complication: Queensland, the Northern Territory, and Western Australia don't observe daylight saving time (DST). Queensland's last referendum on DST, in 1992, rejected it by 54.5%. This means that in summer, there can be up to five different times in use across mainland Australia — with NSW and QLD on different times despite sharing a border.

• AWST (Perth): UTC+8 year-round. WA's distance from the eastern states means it's always 2–3 hours behind.
• ACST (Adelaide, Darwin): UTC+9:30 — a 30-minute offset that confuses everyone outside Australia. SA observes DST (ACDT, UTC+10:30); NT does not.
• AEST (Sydney, Melbourne, Brisbane, Hobart): UTC+10. NSW, VIC, TAS, and ACT observe DST (AEDT, UTC+11); QLD does not.
• Lord Howe Island: UTC+10:30 in winter, UTC+11 in summer — a half-hour zone shared by very few places globally.