London time to Sydney time
Sydney is 11 hours ahead of London in January and 9 hours ahead of in July (London BST/UTC+01:00 in summer; Sydney GMT+10/UTC+10:00). Enter a London time below to convert it, or leave it blank to see the current time in both cities.
How to use the London to Sydney time
- Type a London time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Sydney time and the working-hours table.
Time difference between London and Sydney
Sydney is 11 hours ahead of London in January and 9 hours ahead of in July. Both London and Sydney observe daylight saving time, but they change clocks on different dates, so for a few weeks each spring and autumn the difference shifts by an hour. London uses Europe/London time (UTC+00:00 in January, UTC+01:00 in July); Sydney uses Australia/Sydney (UTC+11:00 in January, UTC+10:00 in July).
Working week in London and Sydney
London: Office hours 09:00–17:30, weekend Saturday–Sunday. Clocks go forward on the last Sunday of March (BST, UTC+1) and back on the last Sunday of October (GMT).
Sydney: Australian Eastern Time: AEDT (UTC+11) from the first Sunday of October to the first Sunday of April, otherwise AEST (UTC+10). Office hours 09:00–17:00, weekend Saturday–Sunday.
Quick conversion table (summer difference)
| London | Sydney |
|---|---|
| 08:00 | 17:00 |
| 09:00 | 18:00 |
| 10:00 | 19:00 |
| 12:00 | 21:00 |
| 14:00 | 23:00 |
| 16:00 | 01:00 (next day) |
| 18:00 | 03:00 (next day) |
| 20:00 | 05:00 (next day) |
| 22:00 | 07:00 (next day) |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between London and Sydney
Within normal office hours (09:00–18:00) in both cities: no overlap within 09:00–18:00; one side must take an early or late call. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See Sydney to London, or the general time zone converter.
Frequently asked questions
How many hours ahead is Sydney from London?
Sydney is 11 hours ahead of London in January and 9 hours ahead of in July.
When it is 12:00 noon in London, what time is it in Sydney?
21:00 in summer (); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.