AEST to GMT
AEST and GMT explained
Australian Eastern Time uses AEST (UTC+10) as standard time and AEDT (UTC+11) during daylight saving time, from the first Sunday in October to the first Sunday in April; the clocks change at 2am standard time. It covers New South Wales, Victoria, Tasmania and the ACT, including Sydney, Melbourne, Canberra and Hobart. Australia's daylight saving runs over the southern summer, so it is AEDT from October to April. Queensland (Brisbane) stays on AEST all year.
Greenwich Mean Time (GMT) is UTC+0, the reference time at the Greenwich meridian. GMT itself never changes. The UK uses GMT only in winter: from the last Sunday in March to the last Sunday in October it is on BST (UTC+1), so "GMT" and "UK time" are an hour apart in summer.
The difference across the year
GMT compared with AET:
- 11 hours behind (AEDT and GMT) from the first Sunday in October to the first Sunday in April
- 10 hours behind (AEST and GMT) from the first Sunday in April to the first Sunday in October
AET changes its clocks and GMT doesn't, so the gap changes during the year. The converter above uses the rules for the date you pick.
Common times
| AET | GMT 11 hours behind | GMT 10 hours behind |
|---|---|---|
| 00:00 12am | 13:00 1pm, previous day | 14:00 2pm, previous day |
| 06:00 6am | 19:00 7pm, previous day | 20:00 8pm, previous day |
| 08:00 8am | 21:00 9pm, previous day | 22:00 10pm, previous day |
| 09:00 9am | 22:00 10pm, previous day | 23:00 11pm, previous day |
| 12:00 12pm | 01:00 1am | 02:00 2am |
| 15:00 3pm | 04:00 4am | 05:00 5am |
| 17:00 5pm | 06:00 6am | 07:00 7am |
| 18:00 6pm | 07:00 7am | 08:00 8am |
| 21:00 9pm | 10:00 10am | 11:00 11am |
How to use the converter
Pick a time and date under From; the time in GMT appears under To, with your own local time underneath. The date matters around clock changes, so set it for the day you mean. ⇄ swaps the two zones, Now goes back to the current time, and either zone can be changed to any city. The planner below lines up the whole day in both places and in yours.
Handy for
- Calls between Sydney or Melbourne and the UK
- Sport and broadcasts in Australia listed for UK viewers
- Converting Australian times to GMT/UTC timestamps
Questions
What is the time difference between AEST and GMT?
GMT is 11 hours behind AET from the first Sunday in October to the first Sunday in April, and 10 hours behind from the first Sunday in April to the first Sunday in October.
Do AET and GMT change for daylight saving?
Australian Eastern Time switches from AEST (UTC+10) to AEDT (UTC+11) on the first Sunday in October and back on the first Sunday in April. GMT never changes: it is UTC+0 all year.
How do I convert AEST to GMT?
Subtract 11 hours when it is AEDT and GMT; subtract 10 hours when it is AEST and GMT. Or use the converter above: it applies the rules for the exact date you pick.
More time zone pages
Or open the full Time Zones meeting planner and world clock.