Sydney is currently 9 hours ahead of London. Convert time between Sydney and London, see the exact difference, and find the best hours for calls and meetings.
Sydney uses Australian Eastern Standard Time. London uses British Summer Time. Sydney time is 9 hours ahead of London. So, when it is 12:00 AM in Sydney, it is 3:00 PM in London.
Common Sydney times and their London equivalents.
| Sydney Time | London Time |
|---|---|
| 12:00 AM Sydney | 3:00 PM London |
| 1:00 AM Sydney | 4:00 PM London |
| 2:00 AM Sydney | 5:00 PM London |
| 3:00 AM Sydney | 6:00 PM London |
| 4:00 AM Sydney | 7:00 PM London |
| 5:00 AM Sydney | 8:00 PM London |
| 6:00 AM Sydney | 9:00 PM London |
| 7:00 AM Sydney | 10:00 PM London |
| 8:00 AM Sydney | 11:00 PM London |
| 9:00 AM Sydney | 12:00 AM London |
| 10:00 AM Sydney | 1:00 AM London |
| 11:00 AM Sydney | 2:00 AM London |
| 12:00 PM Sydney | 3:00 AM London |
| 1:00 PM Sydney | 4:00 AM London |
| 2:00 PM Sydney | 5:00 AM London |
| 3:00 PM Sydney | 6:00 AM London |
| 4:00 PM Sydney | 7:00 AM London |
| 5:00 PM Sydney | 8:00 AM London |
| 6:00 PM Sydney | 9:00 AM London |
| 7:00 PM Sydney | 10:00 AM London |
| 8:00 PM Sydney | 11:00 AM London |
| 9:00 PM Sydney | 12:00 PM London |
| 10:00 PM Sydney | 1:00 PM London |
| 11:00 PM Sydney | 2:00 PM London |
Sydney uses Australian Eastern Standard Time (AEST, UTC+10) in winter and Australian Eastern Daylight Time (AEDT, UTC+11) in summer. Because Australia is in the Southern Hemisphere, its summer runs October–April — the opposite of the Northern Hemisphere. Clocks go forward on the first Sunday of October and back on the first Sunday of April.
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
Both Sydney and London may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Sydney | London | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT+11 (UTC+11) | GMT (UTC+0) | 11 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT+11 (UTC+11) | GMT (UTC+0) | 11 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+10 (UTC+10) | GMT+1 (UTC+1) | 9 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT+11 (UTC+11) | GMT (UTC+0) | 11 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Sydney is currently 9 hours ahead of London. Sydney uses Australian Eastern Standard Time (UTC+10) and London uses British Summer Time (UTC+1).
Sydney and London have no standard 9 am–6 pm business-hour overlap. Consider scheduling during early morning or late evening, or use a rotating schedule to share the inconvenience.
When it is 9:00 AM in Sydney, it is 12:00 am in London. Sydney is 9 hours ahead of London.
When it is 5:00 PM in London, it is 2:00 am in Sydney (next day).
Both Sydney and London observe Daylight Saving Time, but their transitions may not happen on the same date. During the brief 1–2 week windows in spring and autumn when only one zone has changed clocks, the offset between the two cities shifts by one hour. For most of the year the difference is 9 hours, but double-check the transition dates if you have a recurring meeting scheduled near those windows.