Observatory log
London and Sydney, compared
- 01Difference now
Sydney is 10 hours ahead of London.
London: BST (UTC+1) · Sydney: AEDT (UTC+11)
Next changeFrom 25 October 2026: Sydney is 11 hours ahead of London.
- 02Through 2026–2027
- 1 January 2026 – 29 March 2026+11 h
- 29 March 2026 – 5 April 2026+10 h
- 5 April 2026 – 4 October 2026+9 h
- 4 October 2026 – 25 October 2026+10 h
- 25 October 2026 – 28 March 2027+11 h
- 28 March 2027 – 4 April 2027+10 h
- 4 April 2027 – 3 October 2027+9 h
- 3 October 2027 – 31 October 2027+10 h
- 31 October 2027 – 31 December 2027+11 h
Difference of Sydney from London. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–12:00 in London = 19:00–22:00 in Sydney
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Mon–Fri: 06:00–07:00 in London = 16:00–17:00 in Sydney · 1 h.
- 05Weekend
London: Saturday and Sunday
Sydney: Saturday and Sunday
24 hours
A day in London, in Sydney
| London | Sydney | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 10:00 | |
| 01:00 | 11:00 | |
| 02:00 | 12:00 | |
| 03:00 | 13:00 | |
| 04:00 | 14:00 | |
| 05:00 | 15:00 | |
| 06:00 | 16:00 | |
| 07:00 | 17:00 | |
| 08:00 | 18:00 | |
| 09:00 | 19:00 | |
| 10:00 | 20:00 | |
| 11:00 | 21:00 | |
| 12:00 | 22:00 | |
| 13:00 | 23:00 | |
| 14:00 | 00:00Tomorrow | |
| 15:00 | 01:00Tomorrow | |
| 16:00 | 02:00Tomorrow | |
| 17:00 | 03:00Tomorrow | |
| 18:00 | 04:00Tomorrow | |
| 19:00 | 05:00Tomorrow | |
| 20:00 | 06:00Tomorrow | |
| 21:00 | 07:00Tomorrow | |
| 22:00 | 08:00Tomorrow | |
| 23:00 | 09:00Tomorrow |
Working hoursEarly or eveningNightWeekend
Plan a meeting: London and Sydney
More time differences with London
More time differences with Sydney
Questions
Asked about London and Sydney
What is the time difference between London and Sydney?
Sydney is 10 hours ahead of London. This holds until 25 October 2026; then Sydney is 11 hours ahead of London.
What is the best time for a call between London and Sydney?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 09:00–12:00 in London = 19:00–22:00 in Sydney · 3 h; Mon–Fri: 06:00–07:00 in London = 16:00–17:00 in Sydney · 1 h.
When does the time difference between London and Sydney change?
In the next 12 months it changes on: 25 October 2026 (+11 h); 28 March 2027 (+10 h); 4 April 2027 (+9 h); 3 October 2027 (+10 h).