London to Sydney Time Converter
Easily convert time between London (GMT/BST) and Sydney (AEST/AEDT)
London
UK Time (GMT/BST)
Sydney
Australian Time (AEST/AEDT)
Convert Time Between London and Sydney
Time Difference Between London and Sydney
Standard Time
When it's standard time in both locations:
Example: 12:00 PM in London = 10:00 PM in Sydney
During DST Differences
When both observing DST:
When only one location observes DST, the time difference may be 8 or 11 hours.
Meeting Planner for London and Sydney
Find the best times for a meeting between London and Sydney
Business Hours Overlap
London (9 AM - 5 PM)
Sydney (9 AM - 5 PM)
Overlap
Best meeting time: --
Time Zone Information
About London Time
- Home of Greenwich Mean Time (GMT, UTC+0)
- Uses GMT during winter
- Observes British Summer Time (BST, UTC+1) during summer
- DST begins on the last Sunday in March
- DST ends on the last Sunday in October
About Sydney Time
- Uses Australian Eastern Standard Time (AEST, UTC+10)
- Uses AEST during winter
- Observes Australian Eastern Daylight Time (AEDT, UTC+11) during summer
- DST begins on the first Sunday in October
- DST ends on the first Sunday in April
Frequently Asked Questions
Sydney is typically 9-10 hours ahead of London. The exact difference varies throughout the year due to different daylight saving time periods in each location. When both cities are on standard time or both are on daylight saving time, the difference is 10 hours. When one city is on DST and the other isn't, the difference can be 9 or 11 hours.
The optimal meeting time between London and Sydney is typically between 8:00 AM and 10:00 AM London time (5:00 PM to 7:00 PM Sydney time). This falls within business hours for both cities and avoids early mornings or late evenings for either party.
Yes, both London and Sydney observe Daylight Saving Time, but they switch on different dates. London follows the European schedule (last Sunday in March to last Sunday in October), while Sydney follows the Australian schedule (first Sunday in October to first Sunday in April). This means there are periods when one city is on DST while the other isn't.