Adelaide, Australia · UTC+10:30
Convert time from Adelaide
Adelaide is in the Australia/Adelaide timezone (ACST/UTC+9:30, DST to UTC+10:30 October to April). South Australia’s capital has a population of around 1.4 million.
Adelaide keeps a half-hour offset from its neighbors, and it has done so since 1899. South Australia runs on Central Standard Time, UTC+9:30 in winter, UTC+10:30 during daylight saving. This puts Adelaide perpetually 30 minutes off from Sydney and Melbourne, 30 minutes ahead of Darwin. For anyone scheduling calls between Australian cities, Adelaide is the wrinkle in the plan.
Why the half-hour exists
The 30-minute offset dates to the early days of railway standardization in Australia. South Australian authorities chose a meridian-based time that fell between the eastern states and Western Australia. The logic was geographically sound: Adelaide sits roughly along the 138.5 degree east meridian, halfway between the 150-degree meridian underpinning eastern time and the 120-degree meridian underpinning Western Australian time. The half-hour compromise has survived ever since.
Adelaide Hills to the east of the city shares the same timezone. The region rises quickly into cooler highland country but the clock doesn’t change at the city boundary.
South Australia does observe daylight saving, unlike neighboring Northern Territory. This means for part of the year Adelaide is only 30 minutes behind Sydney; for the rest, it drops to 1.5 hours behind.
9am in Adelaide is 11:30pm in London the previous day during Australian summer.
Sources
Read more about time in Australia →Same time as Adelaide
Compare Adelaide with
Questions about time in Adelaide
- What timezone is Adelaide in?
- Adelaide uses the IANA timezone
Australia/Adelaide. The UTC offset is UTC+9:30 in winter (standard time) and UTC+10:30 during daylight saving time (summer). - Does Adelaide observe daylight saving time?
- Yes. Adelaide observes daylight saving time. In 2026, clocks spring forward one hour on Sunday, October 4 and fall back one hour on Sunday, April 5. During DST, the UTC offset shifts from UTC+9:30 to UTC+10:30.
- What is the current UTC offset for Adelaide?
- Adelaide is currently at UTC+10:30. It is currently observing daylight saving time.
- What is the time difference between Adelaide and New York?
- Adelaide is currently 14 hours 30 minutes ahead of New York.
- What is the time difference between Adelaide and London?
- Adelaide is currently 9 hours 30 minutes ahead of London.
- What is the time difference between Adelaide and Los Angeles?
- Adelaide is currently 17 hours 30 minutes ahead of Los Angeles.
- What is the time difference between Adelaide and Tokyo?
- Adelaide is currently 1 hour 30 minutes ahead of Tokyo. Tokyo does not observe daylight saving time, so this gap changes by 1 hour when Adelaide transitions to/from DST.
- What is the IANA timezone name for Adelaide?
- The IANA timezone database identifier for Adelaide is
Australia/Adelaide. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'Australia/Adelaide' })`), Python (`pytz.timezone('Australia/Adelaide')`), or any IANA-compatible library.