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AET to UTC time converter
UTC is 11 hours behind Sydney for 183 days of 2026, and 10 hours behind for the other 182 days, because daylight saving changes the gap.
AET to UTC conversion table
Local time in Sydney and the matching time in UTC on two reference dates, one in winter and one in summer for the northern hemisphere.
| Sydney (AET) | UTC on 15 January | UTC on 15 July |
|---|---|---|
| 08:00 | 21:00 (-1 day) | 22:00 (-1 day) |
| 09:00 | 22:00 (-1 day) | 23:00 (-1 day) |
| 10:00 | 23:00 (-1 day) | 00:00 |
| 12:00 | 01:00 | 02:00 |
| 15:00 | 04:00 | 05:00 |
| 17:00 | 06:00 | 07:00 |
| 18:00 | 07:00 | 08:00 |
| 21:00 | 10:00 | 11:00 |
Best meeting times between Sydney and UTC
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 AET = 07:00-10:00 UTC; 07:00-08:00 AET = 20:00-21:00 UTC (-1 day).
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 17:00-21:00 AET = 07:00-11:00 UTC.
Want to add more people? The meeting planner starts with these two zones and lets you add up to four more.
Daylight saving between AET and UTC
- Sydney moves its clocks back on 5 April and forward on 4 October in 2026.
- UTC does not change its clocks in 2026.
- The gap is 11 hours for 183 days and 10 hours for 182 days of 2026.
About the two zones
Sydney. Sydney is on AEST (UTC+10) in winter and AEDT (UTC+11) in summer. Because it is in the southern hemisphere, its summer time runs from October to April, the opposite of Europe and North America.
UTC. UTC is the reference all other zones are measured from. It never changes for daylight saving, which is why servers, logs and schedules are best kept in UTC.
Frequently asked questions
What time is 9 AM AET in UTC?
On 15 January, 09:00 in Sydney is 22:00 (-1 day) in UTC. On 15 July it is 23:00 (-1 day).
What is the time difference between Sydney and UTC?
UTC is 11 hours behind Sydney for 183 days of 2026, and 10 hours behind for the other 182 days, because daylight saving changes the gap.
Does the time difference between AET and UTC change during the year?
Yes. Sydney changes its clocks and UTC does not, so the gap moves between 11 and 10 hours. Always convert with the actual date.
When is the best time for a meeting between Sydney and UTC?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 AET = 07:00-10:00 UTC; 07:00-08:00 AET = 20:00-21:00 UTC (-1 day). In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 17:00-21:00 AET = 07:00-11:00 UTC.
More conversions
Need the time in a scheduler? Convert a local-time cron schedule to UTC, or see which jobs a clock change affects with the DST collision simulator.