AEST to GMT
Sydney is 11 hours ahead of London from late October to late March, 9 hours ahead from early April to early October, and 10 hours ahead in the short spells when only one country is on summer time. 8:00 AM in Sydney is 9:00 PM the previous evening in London in January and 11:00 PM the previous evening in July.
Convert the other way: GMT → AEST
Four switch dates, three gaps
The UK moves to BST on the last Sunday of March and back to GMT on the last Sunday of October. Sydney moves to AEDT on the first Sunday of October and back to AEST on the first Sunday of April. Between those four Sundays the gap is 11 hours (late October to late March), 10 hours (late March to early April), 9 hours (early April to early October) and 10 hours again (early October to late October).
Not every Australian city follows Sydney. Brisbane has no daylight saving and is 10 hours ahead of London in the UK winter and 9 in summer. Perth, on UTC+8, is 8 hours ahead of GMT and 7 ahead of BST.
Cricket through the British night
The Boxing Day Test at the Melbourne Cricket Ground starts at 10:30 AM local time on December 26, which is 11:30 PM on Christmas Day in the UK. During an Ashes series in Australia, British fans listen to the morning session overnight and wake up to the tea score.
Family ties are just as strong. Close to a million people born in the UK live in Australia, many dating back to the postwar assisted-passage scheme, and working-holiday visas keep the flow going. The usual family call is a Sydney evening and a London morning: 7:00 PM in Sydney is 8:00 AM in London in January and 10:00 AM in July.
Cities on these zones
AEST → GMT quick reference
Every hour of the day, using today's offsets (daylight saving is applied automatically).
| AEST | GMT |
|---|---|
| 12:00 AM | 2:00 PM−1 |
| 1:00 AM | 3:00 PM−1 |
| 2:00 AM | 4:00 PM−1 |
| 3:00 AM | 5:00 PM−1 |
| 4:00 AM | 6:00 PM−1 |
| 5:00 AM | 7:00 PM−1 |
| 6:00 AM | 8:00 PM−1 |
| 7:00 AM | 9:00 PM−1 |
| 8:00 AM | 10:00 PM−1 |
| 9:00 AM | 11:00 PM−1 |
| 10:00 AM | 12:00 AM |
| 11:00 AM | 1:00 AM |
| AEST | GMT |
|---|---|
| 12:00 PM | 2:00 AM |
| 1:00 PM | 3:00 AM |
| 2:00 PM | 4:00 AM |
| 3:00 PM | 5:00 AM |
| 4:00 PM | 6:00 AM |
| 5:00 PM | 7:00 AM |
| 6:00 PM | 8:00 AM |
| 7:00 PM | 9:00 AM |
| 8:00 PM | 10:00 AM |
| 9:00 PM | 11:00 AM |
| 10:00 PM | 12:00 PM |
| 11:00 PM | 1:00 PM |
- Difference right now
- GMT 10 hours behind AEST
- Shared office hours
- No weekday working hours overlap; one side has to stretch before 9:00 or after 17:00.
- Daylight saving
- Both zones shift their clocks
A London–Sydney handover
London's 8:00 AM start is 7:00 PM in Sydney in January and 5:00 PM in July, so the Australian team can brief London just before leaving. For the London-side view, see London to Sydney.
Clock changes this year
- Apr 5, 2026AEST: clocks go back, UTC+11 → UTC+10
- Oct 4, 2026AEST: clocks go forward, UTC+10 → UTC+11
- Mar 29, 2026GMT: clocks go forward, UTC+0 → UTC+1
- Oct 25, 2026GMT: clocks go back, UTC+1 → UTC+0
Other conversions with these zones
Frequently asked questions
- What time does the Boxing Day Test start in the UK?
- At 11:30 PM on Christmas Day, since 10:30 AM in Melbourne on December 26 is late evening on December 25 in London.
- Is Sydney 9, 10 or 11 hours ahead of London?
- All three, depending on the date: 11 hours in the northern winter, 9 in the northern summer, and 10 during the few weeks when the two daylight-saving periods overlap.
- What is 8 AM in Sydney in London time?
- 9:00 PM the previous day in January, 10:00 PM during the transition weeks, and 11:00 PM the previous day in July.
- Does Perth have the same time difference to London as Sydney?
- No. Perth stays on UTC+8 with no daylight saving, so it is 8 hours ahead of London in winter and 7 hours ahead during British Summer Time.