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UTC to AEST converter

Convert UTC to Australian Eastern Time. Sydney is 11 hours ahead of UTC in summer (AEDT) and 10 hours ahead in winter (AEST).

From
UTC
To
Sydney
Live
UTCUTC
9:00 AM
 
Working hours
SydneyAEST
8:00 PM
 
Working hours

Sydney is 11 hours ahead of UTC (UTC vs AEST).

Need a time that works for three or more people or cities? Plan a meeting →
Gap
11 hours
Sydney ahead of UTC today
Working hours overlap
None
9-to-5 days in UTC and Sydney do not overlap; use an early or late slot
Next gap change
Apr 4, 2027
The gap becomes 10 hours (Sydney clocks go back)
9:00 AM UTC
8:00 PM AEST
Sydney is 11 hours ahead of UTC, as of Nov 6, 2026

Converting UTC for Australian readers

Reading UTC in eastern Australia means adding ten hours for AEST and eleven for AEDT. 12:00 UTC is 10:00 PM AEST in July and 11:00 PM AEDT in January. The Australian date is ahead of the UTC date for the first ten hours of every day.

Australia’s daylight saving runs from the first Sunday of October to the first Sunday of April. The change dates are different from those in Europe and the US, so the UTC gap to Sydney changes at different times from the gaps to London and New York.

Australian developers and operators regularly deal with timestamps that are one day behind their wall clocks.

Servers and logs

Global systems log in UTC, so Australian staff always see a date earlier than their own.

  • 22:00 UTC is 8:00 AM the next day AEST
  • 00:00 UTC is 10:00 AM AEST or 11:00 AM AEDT
  • 08:00 UTC is 6:00 PM AEST

A daily UTC reset happens in the Australian morning, which suits operations teams.

Releases and live streams

Global launches are published in UTC and arrive at awkward hours in Sydney.

  • 17:00 UTC is 3:00 AM the next day in Sydney (AEST)
  • 01:00 UTC is 11:00 AM AEST
  • 10:00 UTC is 8:00 PM AEST or 9:00 PM AEDT

Many launch times are at night in Australia.

Trading

The Australian Securities Exchange trades from 10:00 AM to 4:00 PM Sydney time.

  • The 10:00 AM open is 00:00 UTC in winter, 23:00 UTC in summer
  • The 4:00 PM close is 06:00 UTC in winter, 05:00 UTC in summer
  • The ASX overlaps the Asian session, not Europe’s

The UTC hours change by an hour when Sydney changes its clocks.

Deadlines in UTC

A deadline of 23:59 UTC is 9:59 AM AEST (10:59 AM AEDT) on the next date. For Australians, that means a UTC deadline falls in the morning after the date stated, giving a full working day.

In the opposite direction, an Australian cut-off of 5:00 PM AEST is 07:00 UTC. Global partners should send material before that if they want it processed the same day.

Ten hours or eleven

UTC is fixed. Sydney and Melbourne move to AEDT at 2:00 AM on the first Sunday of October and back to AEST at 3:00 AM on the first Sunday of April. The gap to UTC is therefore 11 hours from October to April and 10 hours otherwise.

Dates for 2026–27. Calculated from the IANA time zone database on Nov 6, 2026: today Sydney is 11 hours ahead of UTC. In northern winter the gap is 11 hours, in northern summer 10 hours. The clock changes ahead are:
  • Apr 4, 2027: Sydney moves to AEST (UTC+10); the gap becomes 10 hours
  • Oct 3, 2027: Sydney moves to AEDT (UTC+11); the gap becomes 11 hours

Queensland, the Northern Territory and Western Australia do not follow the same pattern. Brisbane stays on AEST (UTC+10) all year, so for a Queensland contact the gap is always ten hours.

UTC to Sydney, every hour

Times are for Nov 6, 2026, when Sydney is 11 hours ahead of UTC. The gap changes on the dates listed above. Green rows are the hours when both places are inside a 9-to-5 day.

UTC (UTC)SydneyAEST, +11 hrs
12:00 AM (midnight)11:00 AM
1:00 AM12:00 PM
2:00 AM1:00 PM
3:00 AM2:00 PM
4:00 AM3:00 PM
5:00 AM4:00 PM
6:00 AM5:00 PM
7:00 AM6:00 PM
8:00 AM7:00 PM
9:00 AM8:00 PM
10:00 AM9:00 PM
11:00 AM10:00 PM
12:00 PM (noon)11:00 PM
1:00 PM12:00 AM next day
2:00 PM1:00 AM next day
3:00 PM2:00 AM next day
4:00 PM3:00 AM next day
5:00 PM4:00 AM next day
6:00 PM5:00 AM next day
7:00 PM6:00 AM next day
8:00 PM7:00 AM next day
9:00 PM8:00 AM next day
10:00 PM9:00 AM next day
11:00 PM10:00 AM next day

“next day” and “previous day” mean Sydney is on a different calendar date from UTC.

Quick answers

What is 12:00 UTC in Sydney?

10:00 PM AEST in winter and 11:00 PM AEDT in summer.

Is AEST UTC plus 10?

Yes. AEDT is UTC plus 11.

What is 00:00 UTC in Melbourne?

10:00 AM AEST or 11:00 AM AEDT.

When does Sydney change its clocks?

On the first Sunday of April (back) and the first Sunday of October (forward).

Does Brisbane use AEST all year?

Yes. Queensland does not observe daylight saving.