London to Sydney Meeting Planner
Sydney is 11 hours ahead of London in the northern winter and 9 hours ahead in the northern summer, with 10-hour weeks in between. Working days never overlap, so calls happen early in London or late in Sydney.
Shared working hours, month by month
Calculated from the official time-zone database for 9:00 a.m.–5:00 p.m. working days in both cities.
| Dates | Sydney vs London | Best shared window | Overlap |
|---|---|---|---|
| 11 Nov 2026 – 27 Mar 2027 | +11 h | 8–9 a.m. London = 7–8 p.m. Sydney | 0 h |
| 28 Mar – 3 Apr 2027 | +10 h | 8–9 a.m. London = 6–7 p.m. Sydney | 0 h |
| 4 Apr – 2 Oct 2027 | +9 h | 8–9 a.m. London = 5–6 p.m. Sydney | 0 h |
| 3 Oct – 30 Oct 2027 | +10 h | 8–9 a.m. London = 6–7 p.m. Sydney | 0 h |
| 31 Oct – 10 Nov 2027 | +11 h | 8–9 a.m. London = 7–8 p.m. Sydney | 0 h |
Clock changes in the next 12 months
| Place | Clocks go back | Clocks go forward |
|---|---|---|
| United States & Canada (most areas) | Sun 7 Nov 2027 | Sun 14 Mar 2027 |
| United Kingdom | Sun 31 Oct 2027 | Sun 28 Mar 2027 |
| Sydney (NSW) | Sun 4 Apr 2027 | Sun 3 Oct 2027 |
Making it work for both sides.
A few habits make cross-time-zone meetings easier.
Best slot: 8:00 a.m. London. Between April and early October that is 5:00 p.m. in Sydney, still within many people's working day. In the northern winter, an evening London call (9:00 p.m. London = 8:00 a.m. next day in Sydney) is the alternative.
Melbourne, Canberra and Hobart follow Sydney's time. Brisbane does not use daylight saving.
Why does the London–Sydney difference change so much?+
The two cities are in opposite hemispheres, so one moves its clocks forward around the time the other moves back. The gap swings between 9 and 11 hours.
What time is 8 a.m. London in Sydney?+
7:00 p.m. from November to late March, 6:00 p.m. in the transition weeks, and 5:00 p.m. from April to early October.
Is there any overlap in office hours?+
No. A 9-to-5 day in London never overlaps a 9-to-5 day in Sydney.