AEST to UTC
On Oct 23, 2026, Coordinated Universal Time is 11 hours behind Australian Eastern Time: 9:00 AM AEDT is 10:00 PM UTC the previous day. The gap changes during the year because of daylight saving time; the dates are below.
UTC vs AEST over the next 12 months
| Period | UTC is | Example |
|---|---|---|
| Oct 23, 2026 to Apr 4, 2027 | 11 hours behind | 9:00 AM AEDT = 10:00 PM UTC (previous day) |
| Apr 4, 2027 to Oct 3, 2027 | 10 hours behind | 9:00 AM AEST = 11:00 PM UTC (previous day) |
| Oct 3, 2027 onwards | 11 hours behind | 9:00 AM AEDT = 10:00 PM UTC (previous day) |
AEST to UTC conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Australian Eastern Time | Coordinated Universal Time |
|---|---|
| 12:00 AM | 1:00 PM (previous day) |
| 1:00 AM | 2:00 PM (previous day) |
| 2:00 AM | 3:00 PM (previous day) |
| 3:00 AM | 4:00 PM (previous day) |
| 4:00 AM | 5:00 PM (previous day) |
| 5:00 AM | 6:00 PM (previous day) |
| 6:00 AM | 7:00 PM (previous day) |
| 7:00 AM | 8:00 PM (previous day) |
| 8:00 AM | 9:00 PM (previous day) |
| 9:00 AM | 10:00 PM (previous day) |
| 10:00 AM | 11:00 PM (previous day) |
| 11:00 AM | 12:00 AM |
| 12:00 PM | 1:00 AM |
| 1:00 PM | 2:00 AM |
| 2:00 PM | 3:00 AM |
| 3:00 PM | 4:00 AM |
| 4:00 PM | 5:00 AM |
| 5:00 PM | 6:00 AM |
| 6:00 PM | 7:00 AM |
| 7:00 PM | 8:00 AM |
| 8:00 PM | 9:00 AM |
| 9:00 PM | 10:00 AM |
| 10:00 PM | 11:00 AM |
| 11:00 PM | 12:00 PM |
Best time for a meeting
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour on a weekday: 7:00 PM–8:00 PM AEDT, which is 8:00 AM–9:00 AM UTC.
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Daylight saving time
Australian Eastern Time (AEST/AEDT)
- Apr 4, 2027: clocks go back 1 hour at 3:00 AM (UTC+11 → UTC+10)
- Oct 3, 2027: clocks go forward 1 hour at 2:00 AM (UTC+10 → UTC+11)
Where these clocks are used
- Australian Eastern Time (AEST/AEDT): Sydney, Melbourne, Canberra (Brisbane stays on AEST all year). IANA zone
Australia/Sydney. - Coordinated Universal Time (UTC): servers, aviation and logs worldwide; the same clock as GMT. IANA zone
Etc/UTC.
Questions
What time is it in UTC when it is 9 AM AEST?
On Oct 23, 2026, 9:00 AM AEDT is 10:00 PM UTC the previous day. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.
How many hours behind AEST is UTC?
It depends on the date. Oct 23, 2026 to Apr 4, 2027: UTC is 11 hours behind. Apr 4, 2027 to Oct 3, 2027: UTC is 10 hours behind. Oct 3, 2027 onwards: UTC is 11 hours behind.
Do AEST and UTC observe daylight saving time?
Australian Eastern Time switches to AEDT (UTC+11) in summer and back to AEST (UTC+10) in winter. Coordinated Universal Time stays on UTC±0 all year.
What is the best time for a meeting between AEST and UTC?
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour on a weekday: 7:00 PM–8:00 PM AEDT, which is 8:00 AM–9:00 AM UTC.
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Related conversions
- UTC to AEST (reverse)
- EST to UTC
- CST to UTC
- MST to UTC
- PST to UTC
- GMT to UTC
- CET to UTC
- IST to UTC
- SGT to UTC
- JST to UTC
- AEST to EST
- AEST to CST
- All time zones
Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.