GMT to AEST Time Converter

Convert Greenwich Mean Time (GMT) to Australian Eastern Standard Time (AEST). Both time zones are shown live below; current offset between them is 9 hours ahead.

London · Greenwich Mean Time
21:55:26
Sunday, May 10, 2026
GMT+1 · UTC+01:00
Sydney · Australian Eastern Standard Time
06:55:26
Monday, May 11, 2026
GMT+10 · UTC+10:00

Convert a specific time

From: GMT (London)
To: AEST (Sydney)
--:--

Daylight Saving status right now

GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00
AEST (Australian Eastern Standard Time)
Observes DST
Yes
In DST right now
No
Next spring forward
2026-10-04
Offset shift
UTC+10:00 → UTC+11:00

When can GMT and AEST meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
GMT
AEST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in London (GMT). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 08:00–09:00 GMT (17:00–18:00 AEST).

Hour-by-hour GMT to AEST conversion table

GMT time (London)AEST time (Sydney)Status
00:00 Sun09:00 SunAEST working
01:00 Sun10:00 SunAEST working
02:00 Sun11:00 SunAEST working
03:00 Sun12:00 SunAEST working
04:00 Sun13:00 SunAEST working
05:00 Sun14:00 SunAEST working
06:00 Sun15:00 SunAEST working
07:00 Sun16:00 SunAEST working
08:00 Sun17:00 SunOff-hours both sides
09:00 Sun18:00 SunGMT working
10:00 Sun19:00 SunGMT working
11:00 Sun20:00 SunGMT working
12:00 Sun21:00 SunGMT working
13:00 Sun22:00 SunGMT working
14:00 Sun23:00 SunGMT working
15:00 Sun00:00 MonGMT working
16:00 Sun01:00 MonGMT working
17:00 Sun02:00 MonOff-hours both sides
18:00 Sun03:00 MonOff-hours both sides
19:00 Sun04:00 MonOff-hours both sides
20:00 Sun05:00 MonOff-hours both sides
21:00 Sun06:00 MonOff-hours both sides
22:00 Sun07:00 MonOff-hours both sides
23:00 Sun08:00 MonOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham
Australian Eastern Standard Time (AEST)
IANA identifier
Australia/Sydney
Current UTC offset
UTC+10:00
Current abbreviation
GMT+10
Major cities in this zone
SydneyMelbourneCanberra

Sun today in London and Sydney

London
Sunrise
05:18
Sunset
20:38
Solar noon
12:58
Daylight
15h 20m
Sydney
Sunrise
06:38
Sunset
17:07
Solar noon
11:52
Daylight
10h 29m

Related converters

AEST to GMT (reverse)GMT to ESTGMT to PSTGMT to UTCGMT to CETGMT to ISTEST to AESTPST to AESTUTC to AESTCET to AESTIST to AEST
Looking for local time? See time in London or time in Sydney.

Frequently asked questions

What is the time difference between GMT and AEST right now?+
AEST (Australian Eastern Standard Time) is currently 9 hours ahead GMT (Greenwich Mean Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does GMT or AEST observe daylight saving time?+
GMT: observes daylight saving time. AEST: observes daylight saving time.
When is the best time to schedule a meeting between GMT and AEST?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 08:00–09:00 GMT (17:00–18:00 AEST).
What time is it in Sydney when it is 12:00 noon in London?+
When it is 12:00 Sun in London (GMT), it is 21:00 Sun in Sydney (AEST).
Which IANA time zone identifiers are used for GMT and AEST?+
GMT maps to "Europe/London" in the IANA database. AEST maps to "Australia/Sydney". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is London ahead of or behind Sydney?+
Whether London (GMT) is ahead of or behind Sydney (AEST) depends on the current UTC offsets. Right now AEST is 9 hours ahead GMT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for GMT and AEST?+
GMT is UTC+01:00 (GMT+1) and AEST is UTC+10:00 (GMT+10). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both GMT and AEST?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between GMT and AEST is 08:00–09:00 GMT.