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AET to UK time converter
London is 9 hours behind Sydney for 182 days of 2026, and 11 hours behind for the other 155 days, because daylight saving changes the gap.
AET to UK conversion table
Local time in Sydney and the matching time in London on two reference dates, one in winter and one in summer for the northern hemisphere.
| Sydney (AET) | London on 15 January | London on 15 July |
|---|---|---|
| 08:00 | 21:00 (-1 day) | 23:00 (-1 day) |
| 09:00 | 22:00 (-1 day) | 00:00 |
| 10:00 | 23:00 (-1 day) | 01:00 |
| 12:00 | 01:00 | 03:00 |
| 15:00 | 04:00 | 06:00 |
| 17:00 | 06:00 | 08:00 |
| 18:00 | 07:00 | 09:00 |
| 21:00 | 10:00 | 12:00 |
Best meeting times between Sydney and London
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 AET = 07:00-10:00 UK; 07:00-08:00 AET = 20:00-21:00 UK (-1 day).
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 16:00-21:00 AET = 07:00-12:00 UK.
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 UK
- Sydney moves its clocks back on 5 April and forward on 4 October in 2026.
- London moves its clocks forward on 29 March and back on 25 October in 2026.
- The gap is 9 hours for 182 days and 11 hours for 155 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.
London. The UK is on GMT (UTC+0) in winter and British Summer Time (UTC+1) from the last Sunday of March to the last Sunday of October.
Frequently asked questions
What time is 9 AM AET in UK?
On 15 January, 09:00 in Sydney is 22:00 (-1 day) in London. On 15 July it is 00:00.
What is the time difference between Sydney and London?
London is 9 hours behind Sydney for 182 days of 2026, and 11 hours behind for the other 155 days, because daylight saving changes the gap.
Does the time difference between AET and UK change during the year?
Yes. Both zones change their clocks, on different dates, so the gap moves between 9 and 11 hours. Always convert with the actual date.
When is the best time for a meeting between Sydney and London?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 AET = 07:00-10:00 UK; 07:00-08:00 AET = 20:00-21:00 UK (-1 day). In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 16:00-21:00 AET = 07:00-12:00 UK.
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.