Time difference between Sydney and Adelaide
Good time for both on a weekday: 9:30–17:00 in Sydney = 9:00–16:30 in Adelaide.
- Everyone at work
- Work hours
- Awake
- Night
- Weekend
Tap any column to see that moment in every city.
Different hours for each city
- 30 minutesAdelaide behind Sydney
- UTC+11 / UTC+10Sydney, January / July
- UTC+10:30 / UTC+9:30Adelaide, January / July
- 7 hours 30 minutesshared 9-to-5 time
How the gap moves through the year
Adelaide is 30 minutes behind Sydney for about 12 months of the year.
Adelaide is 30 minutes ahead of Sydney for about 0 weeks of the year.
Adelaide is 1 hour 30 minutes behind Sydney for about 0 weeks of the year.
The short odd stretches come from the two cities changing their clocks on different weekends.
From the first Sunday in April (when Sydney falls back), Adelaide is 30 minutes ahead of Sydney.
From the first Sunday in April (when Adelaide falls back), Adelaide is 30 minutes behind Sydney.
From the first Sunday in October (when Sydney moves forward), Adelaide is 1 hour 30 minutes behind Sydney.
From the first Sunday in October (when Adelaide moves forward), Adelaide is 30 minutes behind Sydney.
Sydney moves its clocks forward one hour on the first Sunday in October at 2:00 am local time and back on the first Sunday in April at 3:00 am, switching between Australian Eastern Standard Time (UTC+10) and Australian Eastern Daylight Time (UTC+11).
Adelaide moves its clocks forward one hour on the first Sunday in October at 2:00 am local time and back on the first Sunday in April at 3:00 am, switching between Australian Central Standard Time (UTC+9:30) and Australian Central Daylight Time (UTC+10:30).
Next clock change for this pair, as of when this page was built (2026-10-20): Sydney falls back on Sun 4 April 2027.
Everything on this page also holds if you swap Sydney for Melbourne, Canberra or Hobart — those cities follow exactly the same clock all year.
Working hours that overlap
In January, a 9-to-5 day in both cities shares 7 hours 30 minutes: 9:30 am–5:00 pm in Sydney, which is 9:00 am–4:30 pm in Adelaide.
July gives exactly the same window.
Across the week
At 9:00 on a Monday morning in Sydney, it is 8:30 am on Monday in Adelaide.
Daylight, distance and night calls
Sydney and Adelaide are about 1,160 km (722 miles) apart and 13° of longitude apart, which by the sun alone would be 45 minutes.
Sydney's winter clock runs 55 minutes ahead of the sun, and Adelaide's runs 1 hour 16 minutes ahead of the sun.
In mid-January the sun is up in Sydney from about 5:59 am to 8:09 pm, and the sun is up in Adelaide from about 6:17 am to 8:32 pm; both cities are in daylight at the same time for about 13 hours 15 minutes.
In mid-July the sun is up in Sydney from about 6:58 am to 5:04 pm, and the sun is up in Adelaide from about 7:21 am to 5:22 pm; both cities are in daylight at the same time for about 9 hours 15 minutes.
Hour-by-hour table and common mistakes — 2 more sections
| Sydney | Adelaide, January | Adelaide, July |
|---|---|---|
| 12:00 am | 11:30 pm (−1 day) | 11:30 pm (−1 day) |
| 1:00 am | 12:30 am | 12:30 am |
| 2:00 am | 1:30 am | 1:30 am |
| 3:00 am | 2:30 am | 2:30 am |
| 4:00 am | 3:30 am | 3:30 am |
| 5:00 am | 4:30 am | 4:30 am |
| 6:00 am | 5:30 am | 5:30 am |
| 7:00 am | 6:30 am | 6:30 am |
| 8:00 am | 7:30 am | 7:30 am |
| 9:00 am | 8:30 am | 8:30 am |
| 10:00 am | 9:30 am | 9:30 am |
| 11:00 am | 10:30 am | 10:30 am |
| 12:00 pm | 11:30 am | 11:30 am |
| 1:00 pm | 12:30 pm | 12:30 pm |
| 2:00 pm | 1:30 pm | 1:30 pm |
| 3:00 pm | 2:30 pm | 2:30 pm |
| 4:00 pm | 3:30 pm | 3:30 pm |
| 5:00 pm | 4:30 pm | 4:30 pm |
| 6:00 pm | 5:30 pm | 5:30 pm |
| 7:00 pm | 6:30 pm | 6:30 pm |
| 8:00 pm | 7:30 pm | 7:30 pm |
| 9:00 pm | 8:30 pm | 8:30 pm |
| 10:00 pm | 9:30 pm | 9:30 pm |
| 11:00 pm | 10:30 pm | 10:30 pm |
Common mistakes with Sydney and Adelaide
- Assuming the gap is fixed. Both cities change their clocks, but not on the same weekend, so a recurring meeting can land an hour off for a few weeks.
- Rounding to the hour. Adelaide is on UTC+10:30, so an invite set for “3 pm” elsewhere starts at half past or quarter to the hour there.
- Writing “GMT+11” all year for Sydney. In summer the zone is Australian Eastern Standard Time; calendar apps handle it, but a typed time in an email can be read the wrong way.
Questions
- Is Adelaide ahead of Sydney?
- Adelaide is 30 minutes behind Sydney for most of the year.
- What is a good time for a meeting between Sydney and Adelaide?
- With 9-to-5 days in both cities, 9:30 am–5:00 pm Sydney time is inside working hours in both, which gives 7 hours 30 minutes. The window can shift by an hour in the weeks when only one city has changed its clocks.
- Does the time difference between Sydney and Adelaide change?
- Yes. Adelaide is 30 minutes behind Sydney for about 12 months of the year. Adelaide is 30 minutes ahead of Sydney for about 0 weeks of the year. Adelaide is 1 hour 30 minutes behind Sydney for about 0 weeks of the year.
Related time differences
- New York and SydneySydney ahead by 14–16 hours · no shared office hours
- London and SydneySydney ahead by 9–11 hours · no shared office hours
- Sydney and SingaporeSingapore behind by 2–3 hours · 6 hours of shared office time
- Sydney and BrisbaneBrisbane behind by 0–1 hours · 8 hours of shared office time
- Los Angeles and SydneySydney ahead by 17–19 hours · 3 hours of shared office time
- Sydney and MelbourneSame clock time · 8 hours of shared office time
- Sydney and VancouverVancouver behind by 17–19 hours · 3 hours of shared office time
- Sydney and AucklandAuckland ahead by 2 hours · 6 hours of shared office time
- Sydney and DubaiDubai behind by 6–7 hours · 2 hours of shared office time
- Sydney and TokyoTokyo behind by 1–2 hours · 7 hours of shared office time
Sydney time zone · Adelaide time zone · Plan with more cities
City names, coordinates and time zone assignments: GeoNames, licensed under CC BY 4.0 (selection and renaming of some cities by this site). Clock times are computed in your browser from the IANA time zone database. Sources and limits.