Time in Adelaide
Adelaide runs on Australia/Adelaide, currently UTC+9:30 (ACST). Its clocks change 2 times in 2026.
Adelaide, Australia
Zone facts
- IANA zone
- Australia/Adelaide
- Abbreviation
- ACST
- Standard offset
- UTC+9:30
- Daylight offset
- UTC+10:30
- Country
- Australia (AU)
- Coordinates
- -34.93, 138.60
Daylight saving time
Clocks in Adelaide change 2 times in 2026. The next changes:
- 2026-10-04 at 01:59Clocks go forward 60 minutes (UTC+9:30 → UTC+10:30)
- 2027-04-04 at 02:59Clocks go back 60 minutes (UTC+10:30 → UTC+9:30)
Sunrise and sunset
Computed from the city’s latitude and longitude with the NOAA solar position algorithm — no API, no network call.
- Sunrise
- 06:28
- Sunset
- 18:00
- Daylight
- 11 hours 32 minutes
Against the major hubs
Common questions
- What time zone is Adelaide in?
- Adelaide uses the Australia/Adelaide time zone, currently UTC+9:30 (ACST). Use the IANA identifier rather than the abbreviation in code — abbreviations are ambiguous, and this one may mean something else somewhere else.
- Does Adelaide observe daylight saving time?
- Yes. Adelaide moves between UTC+9:30 in winter and UTC+10:30 in summer, changing 2 times in 2026.
- What is the difference between Adelaide and UTC?
- UTC+9:30 as of the last rebuild. It swings between UTC+9:30 and UTC+10:30 across the year.
- When does the sun rise and set in Adelaide?
- On the day of the last rebuild, sunrise was 06:28 and sunset 18:00 local time, giving 11 hours 32 minutes of daylight. These are computed from the city’s latitude and longitude, not fetched from anywhere.