London to AEST
Australian Eastern Time is 9 hours ahead of United Kingdom Time for 182 days of the year, and takes 3 different values across the year.
London to AEST conversion table
Every hour of the day at the difference that holds for 182 days of 2026 — 9 hours. See “When the difference changes” below for the rest.
| London | AEST |
|---|---|
| 12:00 AM | 9:00 AM |
| 1:00 AM | 10:00 AM |
| 2:00 AM | 11:00 AM |
| 3:00 AM | 12:00 PM |
| 4:00 AM | 1:00 PM |
| 5:00 AM | 2:00 PM |
| 6:00 AM | 3:00 PM |
| 7:00 AM | 4:00 PM |
| 8:00 AM | 5:00 PM |
| 9:00 AM | 6:00 PM |
| 10:00 AM | 7:00 PM |
| 11:00 AM | 8:00 PM |
| London | AEST |
|---|---|
| 12:00 PM | 9:00 PM |
| 1:00 PM | 10:00 PM |
| 2:00 PM | 11:00 PM |
| 3:00 PM | 12:00 AM +1 day |
| 4:00 PM | 1:00 AM +1 day |
| 5:00 PM | 2:00 AM +1 day |
| 6:00 PM | 3:00 AM +1 day |
| 7:00 PM | 4:00 AM +1 day |
| 8:00 PM | 5:00 AM +1 day |
| 9:00 PM | 6:00 AM +1 day |
| 10:00 PM | 7:00 AM +1 day |
| 11:00 PM | 8:00 AM +1 day |
Shared working hours
They do not overlap at all. A 09:00–17:00 working day in United Kingdom Time ends 1 hour before the Australian Eastern Time one begins, so any live call sits outside somebody's working hours.
The shortest reach is the edges: early morning in London against late evening in AEST, or the other way round.
When the difference changes
The two zones move their clocks on different dates, so the gap takes more than one value. These are the stretches of 2026:
| Dates | AEST is | Why |
|---|---|---|
| 1 January – 29 March | 11 hours ahead of | — |
| 29 March – 4 April | 10 hours ahead of | United Kingdom Time clocks go forward one hour |
| 4 April – 3 October | 9 hours ahead of | Australian Eastern Time clocks go back one hour |
| 3 October – 25 October | 10 hours ahead of | Australian Eastern Time clocks go forward one hour |
| 25 October – 31 December | 11 hours ahead of | United Kingdom Time clocks go back one hour |
Dates are United Kingdom Time local dates for 2026. Transition dates move by a few days from year to year; the rule each country follows does not.
About United Kingdom Time
The United Kingdom is on GMT (UTC+0) for about five months and BST (UTC+1) for the rest, changing on the last Sunday in March and the last Sunday in October. Ireland keeps exactly the same clock, so every figure here applies to Dublin as well as London.
Cities on this clock: London, Lisbon, Dublin, Edinburgh, Manchester.
About Australian Eastern Time
Sydney, Melbourne and Canberra run at UTC+10 as AEST and UTC+11 as AEDT, changing on the first Sunday in October and the first Sunday in April. Queensland does not change at all, so Brisbane matches Sydney for about half the year and sits an hour behind it for the rest — on the same "Eastern" label.
Cities on this clock: Sydney, Melbourne.
How the difference is worked out
The gap between United Kingdom Time and Australian Eastern Time is not one number. The two zones change their clocks on different dates, so for part of the year the difference is 9 hours and for the rest it is something else — the table above lists each stretch of 2026 with the date it starts and which country's clocks moved.
With both zones on their own standard time — daylight saving not in force anywhere — Australian Eastern Time is 10 hours ahead of United Kingdom Time. That figure never changes; everything else on this page follows from it plus whichever clocks have moved.
Every figure here comes from the IANA time zone database via your browser's own Intl engine, using the zone ids Europe/London and Australia/Sydney. Nothing is looked up on a server and nothing about your visit is recorded.
Is AEST ahead of or behind London?
Australian Eastern Time is 9 hours ahead of United Kingdom Time for 182 days of the year, and takes 3 different values across the year. The gap moves because the two zones change their clocks on different dates — on 29 March, United Kingdom Time clocks go forward one hour; on 4 April, Australian Eastern Time clocks go back one hour; on 3 October, Australian Eastern Time clocks go forward one hour; on 25 October, United Kingdom Time clocks go back one hour (dates for 2026).
What time is 9 AM London in AEST?
9:00 AM London is 6:00 PM AEST for most of the year — see the table above for the 5 stretches of 2026 the gap holds different values.
When can United Kingdom Time and Australian Eastern Time meet?
They do not overlap. A 09:00–17:00 working day in United Kingdom Time ends 1 hour before the Australian Eastern Time one begins, so a call has to sit outside someone's working hours — early morning in United Kingdom Time or late evening in Australian Eastern Time is usually the shortest reach.
What does London stand for?
London is United Kingdom Time, also written GMT, BST, British Summer Time. The United Kingdom is on GMT (UTC+0) for about five months and BST (UTC+1) for the rest, changing on the last Sunday in March and the last Sunday in October. Ireland keeps exactly the same clock, so every figure here applies to Dublin as well as London.