When can I ring?
When can I ring London from Sydney?
The hours you are both awake, a good time to ring, and how the gap moves through the year. Worked out from the time-zone database.
Right now
Choose both places to see the hours.
Waking hours
We assume people are up from 7:00 to 22:00, and that 9:00 to 21:00 is a fair time for a call. Change it if they keep other hours.
About this pair
The seasons run opposite ways here. London moves its clocks forward in late March and Sydney moves back a week later, so the gap changes twice in a few weeks, and again in October.
For most of the year your evening is their morning. A call after dinner in Sydney reaches London over breakfast.
Written by The Sunli team.
Through the year
We assume you are up from 7:00 to 22:00 and that 9:00 to 21:00 is a fair time for them to take a call. Change the hours in the tool above if they keep others.
14 November 2026 to 28 March 2027
London is 11 hours behind Sydney.
Good time to ring: 20:00 to 22:00, your time (9:00 to 11:00 in London).
Also 7:00 to 8:00, your time.
28 March 2027 to 4 April 2027
London is 10 hours behind Sydney.
Good time to ring: 19:00 to 22:00, your time (9:00 to 12:00 in London).
4 April 2027 to 3 October 2027
London is 9 hours behind Sydney.
Good time to ring: 18:00 to 22:00, your time (9:00 to 13:00 in London).
3 October 2027 to 31 October 2027
London is 10 hours behind Sydney.
Good time to ring: 19:00 to 22:00, your time (9:00 to 12:00 in London).
31 October 2027 to 31 December 2027
London is 11 hours behind Sydney.
Good time to ring: 20:00 to 22:00, your time (9:00 to 11:00 in London).
Also 7:00 to 8:00, your time.
When the clocks change
- London: clocks go forward 1 hour on Sunday 28 March 2027, at 1:00 local time.
- Sydney: clocks go back 1 hour on Sunday 4 April 2027, at 3:00 local time.
- Sydney: clocks go forward 1 hour on Sunday 3 October 2027, at 2:00 local time.
- London: clocks go back 1 hour on Sunday 31 October 2027, at 2:00 local time.
Time zones: Sydney uses Australia/Sydney and London uses Europe/London in the IANA time-zone database, version 2026f. Dates are worked out from it; a government can change its clocks at short notice.