VesperalbaLondon and Sydney: time difference and the hours you share
Opposite hemispheres, opposite seasons: when the UK goes onto summer time in March, Sydney is about to leave it, and in October it happens the other way round. The difference is 11 hours in the northern winter, 9 in the northern summer, and 10 in the weeks between.
Sydney is 11 hours ahead of London right now. Turn on JavaScript to see both clocks live.
The difference and the shared work hours, month by month
Work hours here are 09:00–18:00 local, Monday to Friday, the same default the extension uses.
| From | Until | Difference | Shared 09:00–18:00 |
|---|---|---|---|
| Now (31 Oct 2026) | 28 Mar 2027 | Sydney is 11 hours ahead of London GMT / AEDT | None · least awkward hour: 7:30 AM–8:30 AM in London 6:30 PM–7:30 PM in Sydney |
| 28 Mar 2027 | 4 Apr 2027 | Sydney is 10 hours ahead of London BST / AEDT | None · least awkward hour: 8:00 AM–9:00 AM in London 6:00 PM–7:00 PM in Sydney |
| 4 Apr 2027 | 3 Oct 2027 | Sydney is 9 hours ahead of London BST / AEST | None · least awkward hour: 8:30 AM–9:30 AM in London 5:30 PM–6:30 PM in Sydney |
| 3 Oct 2027 | 30 Oct 2027 and on | Sydney is 10 hours ahead of London BST / AEDT | None · least awkward hour: 8:00 AM–9:00 AM in London 6:00 PM–7:00 PM in Sydney |
Daylight saving time: the next clock changes
- London: Sun, 28 Mar 2027: at 1:00 AM clocks go forward to 2:00 AM (GMT → BST, UTC+1)
- Sydney: Sun, 4 Apr 2027: at 3:00 AM clocks go back to 2:00 AM (AEDT → AEST, UTC+10); Sun, 3 Oct 2027: at 2:00 AM clocks go forward to 3:00 AM (AEST → AEDT, UTC+11)
Sydney’s daylight saving time (AEDT, UTC+11) runs from the first Sunday of October to the first Sunday of April.
Good to know
- The only practical slots are the London early morning (Sydney evening) or the London evening (Sydney next morning). 8:00 AM in London is 7:00 PM in Sydney in January and 5:00 PM in July.
- Sydney’s Monday morning is still Sunday evening in London. Plan the week’s first call for London Monday morning, which is Monday evening in Sydney.
- Brisbane and Queensland don’t use daylight saving time, so in the Australian summer Brisbane is an hour behind Sydney.
Questions
What is the time difference between London and Sydney?
Sydney is 9 to 11 hours ahead of London. Other differences: 11 hours: 31 Oct–28 Mar; 10 hours: 28 Mar–4 Apr, 3 Oct–30 Oct (the two places change clocks on different dates).
When do work hours in London and Sydney overlap?
With 09:00–18:00 on both sides there is no shared window. The least awkward hour is 7:30 AM–8:30 AM in London = 6:30 PM–7:30 PM in Sydney.
Keep these clocks in your toolbar
Vesperalba is a free Chrome extension: everyone’s time and work hours on one screen, a converter that moves every city at once, and share links that open in the reader’s time zone. No account, no tracking, works offline.
Get Vesperalba for Chrome