London to ACST
Converting a fixed time. Europe/London → Australia/Adelaide
Clocks go back 1 hour on Sunday, 25th October 2026, at 1:59 am local time (1:00 am after the change).
Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).
Convert a specific time minutes work, not just whole hours
Hour by hour
| London | ACST | 24h | Good to call? |
|---|---|---|---|
| 12am | 8am | 00:00 → 08:30 | asleep in London |
| 1am | 9am | 01:00 → 09:30 | asleep in London |
| 2am | 10am | 02:00 → 10:30 | asleep in London |
| 3am | 11am | 03:00 → 11:30 | asleep in London |
| 4am | 12pm | 04:00 → 12:30 | asleep in London |
| 5am | 1pm | 05:00 → 13:30 | asleep in London |
| 6am | 2pm | 06:00 → 14:30 | asleep in London |
| 7am | 3pm | 07:00 → 15:30 | awake, not at work |
| 8am | 4pm | 08:00 → 16:30 | awake, not at work |
| 9am | 5pm | 09:00 → 17:30 | awake, not at work |
| 10am now | 6pm | 10:00 → 18:30 | awake, not at work |
| 11am | 7pm | 11:00 → 19:30 | awake, not at work |
| 12pm | 8pm | 12:00 → 20:30 | awake, not at work |
| 1pm | 9pm | 13:00 → 21:30 | awake, not at work |
| 2pm | 10pm | 14:00 → 22:30 | asleep in ACST |
| 3pm | 11pm | 15:00 → 23:30 | asleep in ACST |
| 4pm | 12am Fri | 16:00 → 00:30 | asleep in ACST |
| 5pm | 1am Fri | 17:00 → 01:30 | asleep in ACST |
| 6pm | 2am Fri | 18:00 → 02:30 | asleep in ACST |
| 7pm | 3am Fri | 19:00 → 03:30 | asleep in ACST |
| 8pm | 4am Fri | 20:00 → 04:30 | asleep in ACST |
| 9pm | 5am Fri | 21:00 → 05:30 | asleep in ACST |
| 10pm | 6am Fri | 22:00 → 06:30 | asleep in ACST |
| 11pm | 7am Fri | 23:00 → 07:30 | asleep in London |
Call times
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
8am
9am
10am
11am
12pm
1pm
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3pm
4pm
5pm
6pm
7pm
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9pm
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12am
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7am
Questions people ask
What time is it in ACST when it is 7:45 pm in London?
4:15 am in ACST the next day.
How many hours ahead is ACST of London?
ACST is 8 hours 30 minutes ahead London. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between London and ACST?
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
When does the difference between London and ACST change?
London: Clocks go back 1 hour on Sunday, 25th October 2026, at 1:59 am local time (1:00 am after the change). ACST: Clocks go forward 1 hour on Sunday, 4th October 2026, at 1:59 am local time (3:00 am after the change).