Sydney to London Time Difference
London is 10 hours behind Sydney. When it's 12:34:05 AM in Sydney, it's 02:34:05 PM in London.
How Many Hours Behind Is London From Sydney?
London is 10 hours behind Sydney. So Sydney is 10 hours ahead of London looking the other way — the same gap, described from the other end.
In practice that means a working day in Sydney starts when it is already 11:00 PM the previous day in London. The gap is not fixed all year: it becomes 11 hours on Sunday, October 25, 2026, when London changes its clocks.
Best Time to Call Sydney and London
Standard 9-to-5 hours in Sydney and London never overlap, so someone has to take the call outside their working day. The most workable window is 5:00 PM to 10:00 PM in Sydney, which is 7:00 AM to 12:00 PM in London.
both at work Sydney only London only neither — hours shown along the strip are Sydney local time.
Convert a Specific Time
Pick any date and time in Sydney to see the exact equivalent in London.
Common Times Converted
Sydney time on the left, London time on the right.
Sydney to London: Full 24-Hour Conversion Table
Based on today, Monday, October 12, 2026 in Sydney. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Sydney | London | Working hours |
|---|---|---|
| 12:00 AM | 2:00 PM prev day | London only |
| 1:00 AM | 3:00 PM prev day | London only |
| 2:00 AM | 4:00 PM prev day | London only |
| 3:00 AM | 5:00 PM prev day | — |
| 4:00 AM | 6:00 PM prev day | — |
| 5:00 AM | 7:00 PM prev day | — |
| 6:00 AM | 8:00 PM prev day | — |
| 7:00 AM | 9:00 PM prev day | — |
| 8:00 AM | 10:00 PM prev day | — |
| 9:00 AM | 11:00 PM prev day | Sydney only |
| 10:00 AM | 12:00 AM | Sydney only |
| 11:00 AM | 1:00 AM | Sydney only |
| 12:00 PM | 2:00 AM | Sydney only |
| 1:00 PM | 3:00 AM | Sydney only |
| 2:00 PM | 4:00 AM | Sydney only |
| 3:00 PM | 5:00 AM | Sydney only |
| 4:00 PM | 6:00 AM | Sydney only |
| 5:00 PM | 7:00 AM | — |
| 6:00 PM | 8:00 AM | — |
| 7:00 PM | 9:00 AM | London only |
| 8:00 PM | 10:00 AM | London only |
| 9:00 PM | 11:00 AM | London only |
| 10:00 PM | 12:00 PM | London only |
| 11:00 PM | 1:00 PM | London only |
Understanding the Sydney – London Time Difference
Sydney runs on Australia/Sydney, currently AEDT (UTC+11:00). London runs on Europe/London, currently BST (UTC+1:00). The gap of 10 hours is simply the distance between those two offsets.
Both cities observe Daylight Saving Time, but they don't switch on the same date — so for a few weeks each year the gap between them is different again. The next shift is on Sunday, October 25, 2026, when London adjusts its clocks and the difference becomes 11 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Australia · Daylight Saving Time in the United Kingdom.
Sydney today
London today
Frequently Asked Questions
What is the time difference between Sydney and London?
London is currently 10 hours behind Sydney. That gap becomes 11 hours on Sunday, October 25, 2026, when London changes its clocks.
How many hours behind is London from Sydney?
London is 10 hours behind Sydney. Looking at it the other way, Sydney is 10 hours ahead of London.
What time is it in London when it is 9:00 AM in Sydney?
When it is 9:00 AM in Sydney, it is 11:00 PM the previous day in London.
Is London ahead of or behind Sydney?
London is 10 hours behind Sydney. Sydney reaches each point in the day first, so London is still getting started while the Sydney working day is finishing.
What is the best time to call between Sydney and London?
Standard business hours in Sydney and London do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 5:00 PM to 10:00 PM in Sydney, which is 7:00 AM to 12:00 PM in London.
Does the time difference between Sydney and London change during the year?
Yes. Both cities observe Daylight Saving Time, and they do not always switch on the same date, so the gap between them shifts during the year. It changes to 11 hours on Sunday, October 25, 2026.
What time zones are Sydney and London in?
Sydney uses the Australia/Sydney time zone, currently AEDT (UTC+11:00). London uses Europe/London, currently BST (UTC+1:00).