AEST stands for Australian Eastern Standard Time. It is UTC+10:00 from UTC — 10 hours ahead of UTC — and it is used in Oceania, in Sydney, Melbourne, Brisbane. AEST is the winter time of Australia's east coast. In summer Sydney and Melbourne move to AEDT (UTC+11:00); Brisbane stays on AEST all year because Queensland does not observe daylight saving.

Try the tool: UTC Converter — convert any time to and from AEST, with the offset for the date you choose.

When is AEST in effect?

AEST is the winter time — the standard time — of its zone. In 2026 it is in effect from the autumn clock change (Sunday, 5 April 2026) through the winter until the spring clock change (Sunday, 3 October 2027). In summer the same places move one hour forward and use the daylight saving abbreviation instead.

What time is it when it is 12:00 AEST?

City Local time when it is 12:00 AEST (15 January 2026)
New York 9:00 pm
London 2:00 am
Paris 3:00 am
Dubai 6:00 am
Mumbai 7:30 am
Tokyo 11:00 am
Sydney 1:00 pm
Los Angeles 6:00 pm

The table is worked out from the offsets: 12:00 AEST is 2:00 am UTC, and each city's local time is UTC plus its own offset. The half-hour cities are the ones to watch: Mumbai is 30 minutes past the hour, because India is on UTC+05:30. The UTC converter does this calculation for any city and any date.

Does AEST have a daylight saving counterpart?

No. AEST is used all year, because the places that use it do not observe daylight saving — so there is no summer abbreviation to switch to and no clock change to remember. That is simpler, but it has a consequence: the gap between AEST and a place that does observe daylight saving changes during the year. In winter, Sydney and New York are 15 hours apart; in summer, when New York moves to EDT (UTC−04:00), the gap becomes 14 hours. The time zone converter applies the rules for the date you choose, so the gap is always right.

AEST through the year

Whether AEST is in effect in each month of 2026, for Sydney:

Month AEST in effect? Offset in effect
January No UTC+11:00
February No UTC+11:00
March No UTC+11:00
April Yes UTC+10:00
May Yes UTC+10:00
June Yes UTC+10:00
July Yes UTC+10:00
August Yes UTC+10:00
September Yes UTC+10:00
October No UTC+11:00
November No UTC+11:00
December No UTC+11:00

AEST is in effect for part of the year and not for the rest — the table shows exactly which months. The change happens on the clock-change dates, not on the first of a month, so a month that straddles a change (March or October/November) is on one offset at the start and the other at the end. The UTC converter shows the offset in effect on any date.

What time is it when it is 09:00 AEST?

Nine in the morning is the start of the working day, so it is the time that matters for meetings. When it is 09:00 AEST on 15 January 2026, the time in eight major cities is:

City Local time at 09:00 AEST
New York 6:00 pm
London 11:00 pm
Paris 12:00 am
Dubai 3:00 am
Mumbai 4:30 am
Tokyo 8:00 am
Sydney 10:00 am
Los Angeles 3:00 pm

AEST and UTC, worked both ways

Converting from AEST to UTC: subtract the offset. 09:00 AEST is 11:00 pm UTC, and 15:00 AEST is 5:00 am UTC. Converting from UTC to AEST: add the offset. 12:00 UTC is 10:00 pm AEST, and 18:00 UTC is 4:00 am AEST. If the result crosses midnight, the date changes: 9:00 am is the time in AEST when it is 23:00 UTC, and if that is past midnight it is the next day. The UTC converter does both directions for any time and any date.

Common mistakes with AEST

The commonest mistake is using AEST for the wrong season: writing EST in July, when New York is on EDT, or writing EDT in January, when it is on EST. The second mistake is forgetting the place: EST means different things in North America (UTC−05:00) and Australia (UTC+10:00), and CST means different things in North America (UTC−06:00), China (UTC+08:00) and Cuba (UTC−05:00). The fix for both is the same: write the offset with the abbreviation, and check the date. The time zone converter shows the offset for any city on any date, so there is no need to guess.

Frequently asked questions

What does AEST stand for?

Australian Eastern Standard Time. It is UTC+10:00 from UTC, and it is used in Oceania, in Sydney, Melbourne, Brisbane.

What is the UTC offset of AEST?

UTC+10:00. That means AEST is 10 hours ahead of UTC: when it is 12:00 UTC it is 10:00 pm AEST.

When is AEST used?

In winter, as the standard time. In summer the same places move one hour forward and use the daylight saving abbreviation instead.

What cities use AEST?

Sydney, Melbourne, Brisbane. AEST is the winter time of Australia's east coast. In summer Sydney and Melbourne move to AEDT (UTC+11:00); Brisbane stays on AEST all year because Queensland does not observe daylight saving.

How do I convert AEST to my time?

Convert AEST to UTC first — subtract UTC+10:00 — then add your own offset. Or use the UTC converter: enter the time in AEST and it gives the time in any city.

Is AEST the same as UTC?

No. AEST is UTC+10:00 from UTC, and it is used all year — it has no daylight saving counterpart.

What time is it in AEST now?

The UTC converter shows the current time in AEST live — it is UTC plus UTC+10:00. Because AEST is only in effect for part of the year, the converter shows the offset in effect today, not the one in effect in another season.

Related pages

Sources

  • IANA Time Zone Database, via Node.js Intl (Intl.DateTimeFormat with timeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory.
  • TimeFlow's own time-zone data (data/cities.ts, data/dst.ts), computed from the IANA database.
  • Time zone rules and offsets: the IANA Time Zone Database, as applied by this site's tools. Offsets on this page are computed from the database for the dates stated.
  • TimeFlow's UTC converter and time zone converter — the live tools behind the numbers on this page.
  • Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.