What is AEST in GMT?
Greenwich Mean Time is 11 hours behind
Convert a time
GMT — Greenwich Mean Time
8:00 am
GMT, Sat
- Time in Sydney
- 7:29:23 PM
- Time in Greenwich
- 8:29:23 AM
- Difference
- −11 h
- Next clock change
- April 4, 2027
When the difference changes
Australian Eastern Time and Greenwich Mean 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 – April 4, 2027Greenwich Mean Time is 11 hours behind
- April 4, 2027 – October 3, 2027Greenwich Mean Time is 10 hours behind
- October 3, 2027 – onwardsGreenwich Mean Time is 11 hours behind
Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.
Daylight saving
Australian Eastern Time
Clocks go back one hour — 3:00 am becomes 2:00 am local time, and the zone is on AEST after that.
Greenwich Mean Time
Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.
AEST to GMT conversion table
Every hour of Saturday, November 7, 2026, converted from Australian Eastern Time to Greenwich Mean Time. 11 of the 24 hours fall on a different calendar day in Greenwich, which is marked.
- 12:00 am AEDT
- 1:00 pm GMT−1 day
- 1:00 am AEDT
- 2:00 pm GMT−1 day
- 2:00 am AEDT
- 3:00 pm GMT−1 day
- 3:00 am AEDT
- 4:00 pm GMT−1 day
- 4:00 am AEDT
- 5:00 pm GMT−1 day
- 5:00 am AEDT
- 6:00 pm GMT−1 day
- 6:00 am AEDT
- 7:00 pm GMT−1 day
- 7:00 am AEDT
- 8:00 pm GMT−1 day
- 8:00 am AEDT
- 9:00 pm GMT−1 day
- 9:00 am AEDT
- 10:00 pm GMT−1 day
- 10:00 am AEDT
- 11:00 pm GMT−1 day
- 11:00 am AEDT
- 12:00 am GMT
- 12:00 pm AEDT
- 1:00 am GMT
- 1:00 pm AEDT
- 2:00 am GMT
- 2:00 pm AEDT
- 3:00 am GMT
- 3:00 pm AEDT
- 4:00 am GMT
- 4:00 pm AEDT
- 5:00 am GMT
- 5:00 pm AEDT
- 6:00 am GMT
- 6:00 pm AEDT
- 7:00 am GMT
- 7:00 pm AEDT
- 8:00 am GMT
- 8:00 pm AEDT
- 9:00 am GMT
- 9:00 pm AEDT
- 10:00 am GMT
- 10:00 pm AEDT
- 11:00 am GMT
- 11:00 pm AEDT
- 12:00 pm GMT
Scheduling between the two
There is no overlap between a nine-to-six working day in Sydney and one in Greenwich — the gap is too wide. A call has to sit early or late for one side. Early morning in Sydney is the usual compromise, since that is late afternoon or evening in Greenwich.
Australian Eastern Time (AEDT) is used in Melbourne, Canberra and Brisbane. Queensland stays on AEST all year while the southern states move to AEDT.
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.
Other conversions
- GMT to AEST
- AEST to UTC
- AEST to EST
- AEST to CST
- AEST to MST
- AEST to PST
- AEST to AKST
- AEST to HST
- AEST to BST
- AEST to CET
- AEST to IST
- AEST to CST (China)
- AEST to JST
- AEST to AST
- AEST to Mexico City
- AEST to BRT
- AEST to ART
- AEST to EET
- AEST to WET
- AEST to MSK
- AEST to TRT
- AEST to SAST
- AEST to WAT
- AEST to EAT
- AEST to GST
- AEST to PKT
- AEST to ICT
- AEST to WIB
- AEST to SGT
- AEST to HKT
- AEST to KST
- AEST to PHT
- AEST to AWST
- AEST to ACST
- AEST to NZST
- All zones