Time in Adelaide, Australia
Tuesday, November 3, 2026
When Adelaide changes its clocks
Adelaide is one of the places that still shifts its clocks twice a year
Adelaide keeps Australian Central Standard Time at UTC+09:30 for most of the year, and moves to Australian Central Daylight Time at UTC+10:30 during its southern-hemisphere summer. The shift is 1 hour.
Because Adelaide is in the southern hemisphere, its summer time runs across the new year rather than through the middle of it. When northern cities move forward in March, Adelaide is moving back — so the gap between Adelaide and Europe or North America changes by two hours over the year, not one.
Next change
4 April 2027 — clocks move back by 1 hour, from UTC+10:30 to UTC+09:30.
Upcoming transition dates
- 5 April 2026 — back to UTC+09:30
- 4 October 2026 — forward to UTC+10:30
- 4 April 2027 — back to UTC+09:30
- 3 October 2027 — forward to UTC+10:30
- 2 April 2028 — back to UTC+09:30
- 1 October 2028 — forward to UTC+10:30
Adelaide is not a whole number of hours from UTC
UTC+09:30 — 30 minutes off the nearest whole hour
Most time zones sit a whole number of hours from UTC. Adelaide does not: it runs at UTC+09:30, offset by 30 minutes from the nearest whole hour. Only a handful of the world's zones do this.
It matters more than it sounds. Mental arithmetic that works everywhere else quietly fails here, and some scheduling tools round to the nearest hour — which puts a meeting in the wrong place by 30 minutes. If you are coordinating with Adelaide, read the offset rather than estimating it.
When the gap to Adelaide changes
Dates in the next year where the difference shifts, by counterpart city
The difference between two cities is not a constant. It changes whenever either side moves its clocks — and because regions switch on different dates, there are short windows each year when the usual gap is wrong. These are the dates that matter for Adelaide:
Singapore (Singapore)
- From 4 April 2027: Adelaide is 1 hour 30 minutes ahead of Singapore
- From 3 October 2027: Adelaide is 2 hours 30 minutes ahead of Singapore
Tokyo (Japan)
- From 4 April 2027: Adelaide is 30 minutes ahead of Tokyo
- From 3 October 2027: Adelaide is 1 hour 30 minutes ahead of Tokyo
Los Angeles (United States)
- From 14 March 2027: Adelaide is 17 hours 30 minutes ahead of Los Angeles
- From 4 April 2027: Adelaide is 16 hours 30 minutes ahead of Los Angeles
- From 3 October 2027: Adelaide is 17 hours 30 minutes ahead of Los Angeles
Daylight and the sun over Adelaide
Adelaide sits at -34.93°, 138.60°
Longest day
14h 30m of daylight
Shortest day
9h 48m of daylight
Yearly swing
4h 42m between them
Clock time versus solar time
When the clock in Adelaide reads 12:00, the sun is not yet overhead — the civil clock runs 16 minutes ahead of mean solar time here.
During summer time that gap widens to 1 hour 16 minutes ahead of the sun, which is the whole point of the exercise — shifting daylight into the evening.
How Adelaide's clock got here
Read from the IANA Time Zone Database, the same rules Linux, macOS and Android use
Adelaide runs at UTC+9:30, so its clock is never a whole number of hours from UTC. This is the single most common source of conversion errors in practice: anything that assumes offsets come in hour steps will be wrong here by 30 minutes, every time.
When the clocks change here
Clocks go forward on the first Sunday in October, a rule the tzdb has applied since 2008.
It changed once:
- 2008from last Sunday in October to first Sunday in October
Before any of this, Adelaide kept local mean time — solar noon by definition — at UTC+9:14, until February 1895. Standard time zones were an attempt to replace that with something people could agree on, and the Adelaide clock still carries the residue of that original figure.
Every date above is a record in the IANA Time Zone Database, not an estimate. The database is maintained by volunteers who track official announcements; if a government changes its rules, these figures change with it.
Quick Time Comparisons
See how Adelaide time compares to other major cities right now
Time Zone Offset from Adelaide
Best Times to Contact Adelaide
Optimal calling and meeting hours
Business Hours
Typically 9:00 AM - 5:00 PM local time
Best for professional calls, meetings, and business inquiries
Personal Calls
Evenings 7:00 PM - 10:00 PM local time
Ideal for catching up with family and friends
Pro Tip: Use the meeting coordinator tool above to find overlapping working hours between your location and Adelaide. This makes scheduling international meetings much easier!
Cultural Business Context
Adelaide, Australia • 23:07 local time
Consider Timing
Outside business hours
Quick Stats
Business Hours Timeline
Best Times to Contact
Times to Avoid
Business hours: 09:00 - 17:00 | Weekend: Sunday, Saturday | Lunch: 12:00 - 13:00
🌍 Cultural awareness enhances business relationships and prevents scheduling conflicts across global teams
Places related to Adelaide
Cities that share a clock, a country, or an offset
On exactly the same clock as Adelaide
These share the Australia/Adelaide zone, so they keep the same time as Adelaide and change their clocks on the same dates.
Meeting Time Coordinator
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Common Questions About Adelaide Time
Frequently asked questions
What time zone is Adelaide in?
Adelaide operates in the Australia/Adelaide time zone, known as Australian Central Standard Time, currently UTC+09:30 (UTC+10:30 during summer time). This clock applies that offset directly from the IANA time zone database.
Does Adelaide observe daylight saving time?
Yes. Adelaide shifts its clocks by 1 hour, between UTC+09:30 and UTC+10:30. The next change is on 4 April 2027.
What's the time difference between Adelaide and my location?
The time comparison tool above shows the current time difference. You can also use our meeting coordinator to find the best times for calls across different time zones.
How accurate is this Adelaide clock?
Our clock synchronizes with your device's time and applies the official Australia/Adelaide time zone offset. It updates every second and automatically handles daylight saving time, ensuring accuracy within a second.
Can I use this for scheduling meetings in Adelaide?
Yes! This tool is perfect for scheduling. Use the meeting coordinator above to compare multiple time zones and find optimal meeting times that work for everyone in Adelaide and other locations.
Time Zone Facts About Adelaide
Interesting information about Adelaide's time
IANA identifier
Australia/Adelaide
Standard time name
Australian Central Standard Time
Standard offset
UTC+09:30 (not a whole number of hours)
Daylight saving
Observed — clocks shift 1 hour to UTC+10:30
Region
Oceania