TimezoneToolbox

CST to AEST converter

AEST is usually 15 h ahead of CST. It is 17 h ahead of CST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 16 h ahead of CST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.

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CST to AEST table

For 4 July 2026, when AEST is 15 h ahead of CST. Other dates: see the table on the right.

CSTAEST24-hour
12:00 AM3:00 PM 0:00 → 15:00
1:00 AM4:00 PM 1:00 → 16:00
2:00 AM5:00 PM 2:00 → 17:00
3:00 AM6:00 PM 3:00 → 18:00
4:00 AM7:00 PM 4:00 → 19:00
5:00 AM8:00 PM 5:00 → 20:00
6:00 AM9:00 PM 6:00 → 21:00
7:00 AM10:00 PM 7:00 → 22:00
8:00 AM11:00 PM 8:00 → 23:00
9:00 AM12:00 AM next day9:00 → 0:00
10:00 AM1:00 AM next day10:00 → 1:00
11:00 AM2:00 AM next day11:00 → 2:00
12:00 PM3:00 AM next day12:00 → 3:00
1:00 PM4:00 AM next day13:00 → 4:00
2:00 PM5:00 AM next day14:00 → 5:00
3:00 PM6:00 AM next day15:00 → 6:00
4:00 PM7:00 AM next day16:00 → 7:00
5:00 PM8:00 AM next day17:00 → 8:00
6:00 PM9:00 AM next day18:00 → 9:00
7:00 PM10:00 AM next day19:00 → 10:00
8:00 PM11:00 AM next day20:00 → 11:00
9:00 PM12:00 PM next day21:00 → 12:00
10:00 PM1:00 PM next day22:00 → 13:00
11:00 PM2:00 PM next day23:00 → 14:00

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 CST
1 January 20268 March 202617 h ahead of
8 March 20264 April 202616 h ahead of
4 April 20263 October 202615 h ahead of
3 October 20261 November 202616 h ahead of
1 November 202631 December 202617 h ahead of
2027: from (UTC)until (UTC)AEST vs CST
1 January 202714 March 202717 h ahead of
14 March 20273 April 202716 h ahead of
3 April 20272 October 202715 h ahead of
2 October 20277 November 202716 h ahead of
7 November 202731 December 202717 h ahead of

CST: Central Time · CST time now
CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

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.

Related converters

Questions

What is the time difference between CST and AEST?

AEST is usually 15 h ahead of CST. It is 17 h ahead of CST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 16 h ahead of CST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.

What is 9 am CST in AEST?

9:00 am CST is 12:00 AM AEST the next day, on dates when the usual difference applies. Use the converter above for any specific date.

Which CST does this page use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. This page means US Central Time (America/Chicago), which switches to CDT (UTC−5) in summer.

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.