AEST to CST converter
CST is usually 15 h behind AEST. It is 17 h behind AEST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 16 h behind AEST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.
AEST to CST table
For 4 July 2026, when CST is 15 h behind AEST. Other dates: see the table on the right.
| AEST | CST |
|---|---|
| 12:00 AM | 9:00 AM prev. day |
| 1:00 AM | 10:00 AM prev. day |
| 2:00 AM | 11:00 AM prev. day |
| 3:00 AM | 12:00 PM prev. day |
| 4:00 AM | 1:00 PM prev. day |
| 5:00 AM | 2:00 PM prev. day |
| 6:00 AM | 3:00 PM prev. day |
| 7:00 AM | 4:00 PM prev. day |
| 8:00 AM | 5:00 PM prev. day |
| 9:00 AM | 6:00 PM prev. day |
| 10:00 AM | 7:00 PM prev. day |
| 11:00 AM | 8:00 PM prev. day |
| 12:00 PM | 9:00 PM prev. day |
| 1:00 PM | 10:00 PM prev. day |
| 2:00 PM | 11:00 PM prev. day |
| 3:00 PM | 12:00 AM |
| 4:00 PM | 1:00 AM |
| 5:00 PM | 2:00 AM |
| 6:00 PM | 3:00 AM |
| 7:00 PM | 4:00 AM |
| 8:00 PM | 5:00 AM |
| 9:00 PM | 6:00 AM |
| 10:00 PM | 7:00 AM |
| 11:00 PM | 8:00 AM |
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) | CST vs AEST |
|---|---|---|
| 1 January 2026 | 8 March 2026 | 17 h behind |
| 8 March 2026 | 4 April 2026 | 16 h behind |
| 4 April 2026 | 3 October 2026 | 15 h behind |
| 3 October 2026 | 1 November 2026 | 16 h behind |
| 1 November 2026 | 31 December 2026 | 17 h behind |
| 2027: from (UTC) | until (UTC) | CST vs AEST |
|---|---|---|
| 1 January 2027 | 14 March 2027 | 17 h behind |
| 14 March 2027 | 3 April 2027 | 16 h behind |
| 3 April 2027 | 2 October 2027 | 15 h behind |
| 2 October 2027 | 7 November 2027 | 16 h behind |
| 7 November 2027 | 31 December 2027 | 17 h behind |
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.
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.
Related converters
Questions
What is the time difference between AEST and CST?
CST is usually 15 h behind AEST. It is 17 h behind AEST 1 Jan–8 Mar and 1 Nov–31 Dec 2026; It is 16 h behind AEST 8 Mar–4 Apr and 3 Oct–1 Nov 2026, because of daylight saving time.
What is 9 am AEST in CST?
9:00 am AEST is 6:00 PM CST the previous day, on dates when the usual difference applies. Use the converter above for any specific date.
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.
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.