Time difference · Europe/London ↔ Australia/Sydney
Time difference between London and Sydney
In short
Sydney is 9 hours ahead of London for 182 of the next 365 days.
From 1 November 2026 to 27 March 2027 the difference is 11 hours.
When it is 09:00 in London, it is 18:00 in Sydney.
Computed from IANA tzdb 2026e UTC offsets for Europe/London and Australia/Sydney.
Data updated
Right now
- London
- --:--
- Sydney
- --:--
Current local times appear here.
Usual difference
+9 h
Sydney ahead, 182 of the next 365 days
Through the year
+9 h to +11 h
Sydney relative to London
Working hours overlap
None
09:00–17:00 never overlaps
Straight-line distance
16,996 km
10,561 mi between city centres
How the difference changes over the next 12 months
Positive values mean Sydney is ahead of London.
| From | Until | Sydney vs London |
|---|---|---|
| 1 Nov 2026 | 28 Mar 2027 | +11 hchanged |
| 28 Mar 2027 | 3 Apr 2027 | +10 hchanged |
| 3 Apr 2027 | 2 Oct 2027 | +9 h |
| 2 Oct 2027 | 31 Oct 2027 | +10 hchanged |
| 31 Oct 2027 | 31 Oct 2027 | +11 hchanged |
Dates are UTC days; clocks change at local times listed below.
When the clocks change
London
Europe/London
Sun, 28 March 2027
At 01:00 clocks go forward 1 hour to 02:00 (BST, UTC+01:00)
Sun, 31 October 2027
At 02:00 clocks go back 1 hour to 01:00 (GMT, UTC+00:00)
Sydney
Australia/Sydney
Sun, 4 April 2027
At 03:00 clocks go back 1 hour to 02:00 (AEST, UTC+10:00)
Sun, 3 October 2027
At 02:00 clocks go forward 1 hour to 03:00 (AEDT, UTC+11:00)
Hour by hour (+9 h)
At the usual difference. Arrival time = departure time in London + flight time + 9 hours. On dates with a different gap, shift every row by the change.
| London | Sydney | Both awake / working |
|---|---|---|
| 00:00 | 09:00 | — |
| 01:00 | 10:00 | — |
| 02:00 | 11:00 | — |
| 03:00 | 12:00 | — |
| 04:00 | 13:00 | — |
| 05:00 | 14:00 | — |
| 06:00 | 15:00 | — |
| 07:00 | 16:00 | both awake |
| 08:00 | 17:00 | both awake |
| 09:00 | 18:00 | both awake |
| 10:00 | 19:00 | both awake |
| 11:00 | 20:00 | both awake |
| 12:00 | 21:00 | both awake |
| 13:00 | 22:00 | both awake |
| 14:00 | 23:00 | — |
| 15:00 | 00:00next day | — |
| 16:00 | 01:00next day | — |
| 17:00 | 02:00next day | — |
| 18:00 | 03:00next day | — |
| 19:00 | 04:00next day | — |
| 20:00 | 05:00next day | — |
| 21:00 | 06:00next day | — |
| 22:00 | 07:00next day | both awake |
| 23:00 | 08:00next day | — |
Calling and meeting windows
| Difference | Days | Both awake (07–23), London time | Both working (09–17), London time |
|---|---|---|---|
| +9 h | 182 | 07:00–14:00 | None |
| +11 h | 148 | 07:00–12:00 | None |
| +10 h | 35 | 07:00–13:00 | None |
What the data shows
Over the next 12 months the gap is 9 hours for 182 days, 11 hours for 148 days, 10 hours for 35 days, because the two places change their clocks on different dates.
How we calculated this: Days per distinct difference across the period.
For two short spells (28 Mar–3 Apr 2027 and 2–31 Oct 2027) the difference is 10 hours instead of the usual 9 hours, because the two places change their clocks on different weekends. Re-check meeting and call times then.
How we calculated this: Intervals shorter than six weeks whose difference is not the typical one (UTC dates of the clock changes that start and end them).
London and Sydney have summer time in opposite halves of the year, so the difference swings by two hours: from 9 hours to 11 hours.
How we calculated this: Range of the difference when both zones change clocks in opposite directions.
At the usual difference, 09:00–17:00 working days in London and Sydney do not overlap at all; waking hours (07:00–23:00) overlap 07:00–14:00 London time.
How we calculated this: Intersection of 09:00–17:00 (and 07:00–23:00) local in both places at the typical difference.
This page also answers for
These places keep exactly the same clocks over the period, so every number above applies to them too.
Same clock as London
- Lisbon, Portugal
- Dublin, Ireland
- Las Palmas, Spain
- Birmingham, United Kingdom
- Manchester, United Kingdom
- Leeds, United Kingdom
- Porto, Portugal
- Sheffield, United Kingdom
Same clock as Sydney
- Melbourne, Australia
- Newcastle, Australia
- Cranbourne, Australia
- Canberra, Australia
- Wollongong, Australia
- Geelong, Australia
- Albury, Australia
Search flights between London and Sydney
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