What is GMT in AEST?
Australian Eastern Time is 10 hours ahead
Greenwich Mean Time is on UTC+0:00 and Australian Eastern Time is on UTC+10:00 right now. The gap changes during the year — see below.
- Time in Greenwich
- 2:14 am
- Time in Sydney
- 12:14 pm
- Difference
- +10 h
- Next clock change
- October 3, 2026
Convert a time
AEST — Australian Eastern Time
12:00 pm
Wed
When the difference changes
Greenwich Mean Time and Australian Eastern Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – October 3, 2026Australian Eastern Time is 10 hours ahead
- October 3, 2026 – April 3, 2027Australian Eastern Time is 11 hours ahead
- April 3, 2027 – October 2, 2027Australian Eastern Time is 10 hours ahead
- October 2, 2027 – onwardsAustralian Eastern Time is 11 hours ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Greenwich Mean Time
Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.
Australian Eastern Time
Clocks go forward one hour at 2am local time, becoming AEDT.
GMT to AEST conversion table
Every hour of Wednesday, September 23, 2026, converted from Greenwich Mean Time to Australian Eastern Time. 10 of the 24 hours fall on a different calendar day in Sydney, which is marked.
- 12:00 am GMT
- 10:00 am AEST
- 1:00 am GMT
- 11:00 am AEST
- 2:00 am GMT
- 12:00 pm AEST
- 3:00 am GMT
- 1:00 pm AEST
- 4:00 am GMT
- 2:00 pm AEST
- 5:00 am GMT
- 3:00 pm AEST
- 6:00 am GMT
- 4:00 pm AEST
- 7:00 am GMT
- 5:00 pm AEST
- 8:00 am GMT
- 6:00 pm AEST
- 9:00 am GMT
- 7:00 pm AEST
- 10:00 am GMT
- 8:00 pm AEST
- 11:00 am GMT
- 9:00 pm AEST
- 12:00 pm GMT
- 10:00 pm AEST
- 1:00 pm GMT
- 11:00 pm AEST
- 2:00 pm GMT
- 12:00 am AEST+1 day
- 3:00 pm GMT
- 1:00 am AEST+1 day
- 4:00 pm GMT
- 2:00 am AEST+1 day
- 5:00 pm GMT
- 3:00 am AEST+1 day
- 6:00 pm GMT
- 4:00 am AEST+1 day
- 7:00 pm GMT
- 5:00 am AEST+1 day
- 8:00 pm GMT
- 6:00 am AEST+1 day
- 9:00 pm GMT
- 7:00 am AEST+1 day
- 10:00 pm GMT
- 8:00 am AEST+1 day
- 11:00 pm GMT
- 9:00 am AEST+1 day
Scheduling between the two
There is no overlap between a nine-to-six working day in Greenwich and one in Sydney — the gap is too wide. A call has to sit early or late for one side. Early morning in Greenwich is the usual compromise, since that is late afternoon or evening in Sydney.
Greenwich Mean Time (GMT) is used in as a fixed UTC+0 offset. Note that the UK itself leaves GMT every summer — see British Time below.
Australian Eastern Time (AEST) is used in Melbourne, Canberra and Brisbane. Queensland stays on AEST all year while the southern states move to AEDT.