ACST – Australian Central Standard Time
ACST is UTC+9:30.
Australian Central Standard Time is used in South Australia (Adelaide) in winter and the Northern Territory (Darwin) all year.
In summer, places on ACST switch to ACDT (Australian Central Daylight Time, UTC+10:30). People often keep saying “ACST” all year, but strictly it's only correct in the standard-time months.
Convert ACST to other time zones
When it's 12:00 PM ACST:
| Zone | Difference | Time |
|---|---|---|
| UTC (Coordinated Universal Time) | −9.5 h | 2:30 AM |
| EST (Eastern Standard Time) | −14.5 h | 9:30 PM |
| CST (Central Standard Time) | −15.5 h | 8:30 PM |
| PST (Pacific Standard Time) | −17.5 h | 6:30 PM |
| GMT (Greenwich Mean Time) | −9.5 h | 2:30 AM |
| CET (Central European Time) | −8.5 h | 3:30 AM |
| IST (India Standard Time) | −4 h | 8:00 AM |
| CST (China Standard Time) | −1.5 h | 10:30 AM |
| JST (Japan Standard Time) | −0.5 h | 11:30 AM |
| AEST (Australian Eastern Standard Time) | +0.5 h | 12:30 PM |
To convert a specific time and date, with daylight saving applied, use the time zone converter.