Sydney time to London time
London is 11 hours behind Sydney in January and 9 hours behind in July (Sydney GMT+10/UTC+10:00 in summer; London BST/UTC+01:00). Enter a Sydney time below to convert it, or leave it blank to see the current time in both cities.
How to use the Sydney to London time
- Type a Sydney time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the London time and the working-hours table.
Time difference between Sydney and London
London is 11 hours behind Sydney in January and 9 hours behind in July. Both Sydney and London 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. Sydney uses Australia/Sydney time (UTC+11:00 in January, UTC+10:00 in July); London uses Europe/London (UTC+00:00 in January, UTC+01:00 in July).
Working week in Sydney and London
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.
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).
Quick conversion table (summer difference)
| Sydney | London |
|---|---|
| 08:00 | 23:00 (previous day) |
| 09:00 | 00:00 |
| 10:00 | 01:00 |
| 12:00 | 03:00 |
| 14:00 | 05:00 |
| 16:00 | 07:00 |
| 18:00 | 09:00 |
| 20:00 | 11:00 |
| 22:00 | 13:00 |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between Sydney and London
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 London to Sydney, or the general time zone converter.
Frequently asked questions
How many hours ahead is London from Sydney?
London is 11 hours behind Sydney in January and 9 hours behind in July.
When it is 12:00 noon in Sydney, what time is it in London?
03:00 in summer (the same or previous day); 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.