TimezoneToolbox

MST to AEST converter

AEST is usually 16 h ahead of MST. It is 18 h ahead of MST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 17 h ahead of MST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.

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MST to AEST table

For 4 July 2026, when AEST is 16 h ahead of MST. Other dates: see the table on the right.

MSTAEST24-hour
12:00 AM4:00 PM 0:00 → 16:00
1:00 AM5:00 PM 1:00 → 17:00
2:00 AM6:00 PM 2:00 → 18:00
3:00 AM7:00 PM 3:00 → 19:00
4:00 AM8:00 PM 4:00 → 20:00
5:00 AM9:00 PM 5:00 → 21:00
6:00 AM10:00 PM 6:00 → 22:00
7:00 AM11:00 PM 7:00 → 23:00
8:00 AM12:00 AM next day8:00 → 0:00
9:00 AM1:00 AM next day9:00 → 1:00
10:00 AM2:00 AM next day10:00 → 2:00
11:00 AM3:00 AM next day11:00 → 3:00
12:00 PM4:00 AM next day12:00 → 4:00
1:00 PM5:00 AM next day13:00 → 5:00
2:00 PM6:00 AM next day14:00 → 6:00
3:00 PM7:00 AM next day15:00 → 7:00
4:00 PM8:00 AM next day16:00 → 8:00
5:00 PM9:00 AM next day17:00 → 9:00
6:00 PM10:00 AM next day18:00 → 10:00
7:00 PM11:00 AM next day19:00 → 11:00
8:00 PM12:00 PM next day20:00 → 12:00
9:00 PM1:00 PM next day21:00 → 13:00
10:00 PM2:00 PM next day22:00 → 14:00
11:00 PM3:00 PM next day23:00 → 15:00

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)AEST vs MST
1 January 20268 March 202618 h ahead of
8 March 20264 April 202617 h ahead of
4 April 20263 October 202616 h ahead of
3 October 20261 November 202617 h ahead of
1 November 202631 December 202618 h ahead of
2027: from (UTC)until (UTC)AEST vs MST
1 January 202714 March 202718 h ahead of
14 March 20273 April 202717 h ahead of
3 April 20272 October 202716 h ahead of
2 October 20277 November 202717 h ahead of
7 November 202731 December 202718 h ahead of

MST: Mountain Time · MST time now
Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.

AEST: Australian Eastern Time · AEST time now
Queensland (Brisbane) uses AEST all year; New South Wales, Victoria, the ACT and Tasmania switch to AEDT (UTC+11) from October to April.

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Questions

What is the time difference between MST and AEST?

AEST is usually 16 h ahead of MST. It is 18 h ahead of MST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 17 h ahead of MST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.

What is 9 am MST in AEST?

9:00 am MST is 1:00 AM AEST the next day, on dates when the usual difference applies. Use the converter above for any specific date.

Which MST does this page use?

Arizona (America/Phoenix) stays on MST all year, so for part of the year it matches Pacific Time instead of Denver.

Which AEST does this page use?

Queensland (Brisbane) uses AEST all year; New South Wales, Victoria, the ACT and Tasmania switch to AEDT (UTC+11) from October to April.