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UK to AET time converter
Sydney is 9 hours ahead of London for 182 days of 2026, and 11 hours ahead of for the other 155 days, because daylight saving changes the gap.
UK to AET conversion table
Local time in London and the matching time in Sydney on two reference dates, one in winter and one in summer for the northern hemisphere.
| London (UK) | Sydney on 15 January | Sydney on 15 July |
|---|---|---|
| 08:00 | 19:00 | 17:00 |
| 09:00 | 20:00 | 18:00 |
| 10:00 | 21:00 | 19:00 |
| 12:00 | 23:00 | 21:00 |
| 15:00 | 02:00 (+1 day) | 00:00 (+1 day) |
| 17:00 | 04:00 (+1 day) | 02:00 (+1 day) |
| 18:00 | 05:00 (+1 day) | 03:00 (+1 day) |
| 21:00 | 08:00 (+1 day) | 06:00 (+1 day) |
Best meeting times between London and Sydney
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-10:00 UK = 18:00-21:00 AET; 20:00-21:00 UK = 07:00-08:00 AET (+1 day).
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UK = 16:00-21:00 AET.
Want to add more people? The meeting planner starts with these two zones and lets you add up to four more.
Daylight saving between UK and AET
- London moves its clocks forward on 29 March and back on 25 October in 2026.
- Sydney moves its clocks back on 5 April and forward on 4 October in 2026.
- The gap is 9 hours for 182 days and 11 hours for 155 days of 2026.
About the two zones
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.
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.
Frequently asked questions
What time is 9 AM UK in AET?
On 15 January, 09:00 in London is 20:00 in Sydney. On 15 July it is 18:00.
What is the time difference between London and Sydney?
Sydney is 9 hours ahead of London for 182 days of 2026, and 11 hours ahead of for the other 155 days, because daylight saving changes the gap.
Does the time difference between UK and AET 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 London and Sydney?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-10:00 UK = 18:00-21:00 AET; 20:00-21:00 UK = 07:00-08:00 AET (+1 day). In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UK = 16:00-21:00 AET.
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.