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Time difference between London and Sydney

Sydney is 9 hours ahead of London. When it is noon in London, it is 9:00 PM in Sydney. The same gap applies whether you look at it as London to Sydney or Sydney to London.

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Sydney is 9 hours ahead of London, usually.

Difference right now9 hours (usual)
Upcoming changesCalculating…

How the gap works

The gap is not constant. Because London and Sydney change their clocks on different dates, the difference becomes 10 hours or 11 hours for part of the year. The live section above shows the exact gap right now and when it next changes.

  • London (United Kingdom) is in the Europe/London time zone: UTC+0 (GMT) or UTC+1 (BST).
  • Sydney (Australia) is in the Australia/Sydney time zone: UTC+10 (AEST) or UTC+11 (AEDT).

Convert London time to Sydney time

LondonSydney
6:00 AM3:00 PM
9:00 AM6:00 PM
12:00 PM9:00 PM
3:00 PM12:00 AM (next day)
6:00 PM3:00 AM (next day)
9:00 PM6:00 AM (next day)

Based on the usual 9 hours gap.

Best time to call or meet

London and Sydney have no overlap in standard 9-to-5 working hours, so one side needs to start early or finish late. If you stretch the day to 7 AM to 10 PM in both cities, the shared window is 7:00 AM to 1:00 PM in London (4:00 PM to 10:00 PM in Sydney).

The best time to call is around 10:00 AM in London (7:00 PM in Sydney). That time falls outside standard 9-to-5 hours in at least one city. These times use the usual gap; for a few weeks each year, shift them by the difference noted above.

Frequently asked questions

What is the time difference between London and Sydney?

Sydney is 9 hours ahead of London, usually. It becomes 10 hours or 11 hours for part of the year.

Is Sydney ahead of or behind London?

Sydney is 9 hours ahead of London.

Does the time difference between London and Sydney change during the year?

Yes. The usual gap is 9 hours, but because London and Sydney change their clocks on different dates, it becomes 10 hours or 11 hours for part of the year. The live section above lists the next changes.

What is the best time to schedule a call between London and Sydney?

The best time to call is around 10:00 AM in London (7:00 PM in Sydney). That time falls outside standard 9-to-5 hours in at least one city.