There is no overlap between 09:00–18:00 working days in these two places.
Clock changes in London and Sydney
London
British Time (GMT)
Next clock change Sun 28 Mar 2027 (UTC+0 → UTC+1)
Sydney
Australian Eastern Daylight Time (AEDT)
Next clock change Sun 4 Apr 2027 (UTC+11 → UTC+10)
Time difference between London and Sydney today
Today Sydney is 11 hours ahead of London. When it is 09:00 in London, it is 20:00 in Sydney. London is on British Time (GMT); Sydney is on Australian Eastern Daylight Time (AEDT).
When the London to Sydney time difference changes
For most of the year Sydney is 9 hours ahead of London. From 25 October to 31 December 2026, Sydney is 11 hours ahead of London instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Sydney vs London
Length
25 October 2026 to 31 December 2026
11 hours ahead
68 days
1 January 2027 to 27 March 2027
11 hours ahead
86 days
28 March 2027 to 3 April 2027
10 hours ahead
7 days
4 April 2027 to 2 October 2027
9 hours ahead
182 days
3 October 2027 to 30 October 2027
10 hours ahead
28 days
31 October 2027 to 31 December 2027
11 hours ahead
62 days
Best time for a meeting between London and Sydney
When Sydney is 9 hours ahead of London: no shared 09:00 to 17:00 hours; try 08:00 in London (17:00 in Sydney).
When Sydney is 11 hours ahead of London: no shared 09:00 to 17:00 hours; try 07:00 in London (18:00 in Sydney).
When Sydney is 10 hours ahead of London: no shared 09:00 to 17:00 hours; try 07:00 in London (17:00 in Sydney).
Frequently asked questions about London and Sydney time
What time is it in Sydney when it is 9:00 AM in London?
20:00 today; Sydney is 11 hours ahead of London.
Does the time difference between London and Sydney change?
Yes. It is usually 9 hours ahead, but changes when one side moves its clocks: 11 hours ahead from 25 October to 31 December 2026; 11 hours ahead from 1 January to 27 March 2027.