MeanwhileAST to ACST converter
Atlantic Time (Halifax) to Australian Central Time (Adelaide).
ACST is 13 h 30 min ahead of AST.
9:00 AM AST = 10:30 PM ACST same day
Best time to meet
No hour falls inside 9 AM to 5 PM in both places, so one side always meets outside office hours.
AST to ACST time table
For 30 Oct 2026. Green rows: both sides between 9 AM and 5 PM.
| AST | ACST |
|---|---|
| 12:00 AM AST | 1:30 PM ACST |
| 1:00 AM AST | 2:30 PM ACST |
| 2:00 AM AST | 3:30 PM ACST |
| 3:00 AM AST | 4:30 PM ACST |
| 4:00 AM AST | 5:30 PM ACST |
| 5:00 AM AST | 6:30 PM ACST |
| 6:00 AM AST | 7:30 PM ACST |
| 7:00 AM AST | 8:30 PM ACST |
| 8:00 AM AST | 9:30 PM ACST |
| 9:00 AM AST | 10:30 PM ACST |
| 10:00 AM AST | 11:30 PM ACST |
| 11:00 AM AST | 12:30 AM ACST next day |
| 12:00 PM AST | 1:30 AM ACST next day |
| 1:00 PM AST | 2:30 AM ACST next day |
| 2:00 PM AST | 3:30 AM ACST next day |
| 3:00 PM AST | 4:30 AM ACST next day |
| 4:00 PM AST | 5:30 AM ACST next day |
| 5:00 PM AST | 6:30 AM ACST next day |
| 6:00 PM AST | 7:30 AM ACST next day |
| 7:00 PM AST | 8:30 AM ACST next day |
| 8:00 PM AST | 9:30 AM ACST next day |
| 9:00 PM AST | 10:30 AM ACST next day |
| 10:00 PM AST | 11:30 AM ACST next day |
| 11:00 PM AST | 12:30 PM ACST next day |
Quick answers
- 9:00 AM AST = 10:30 PM ACST
- 12:00 PM AST = 1:30 AM ACST (next day)
- 3:00 PM AST = 4:30 AM ACST (next day)
- 5:00 PM AST = 6:30 AM ACST (next day)
- 9:00 AM ACST = 7:30 PM AST (previous day)
- 12:00 PM ACST = 10:30 PM AST (previous day)
- 5:00 PM ACST = 3:30 AM AST
Does the gap change during the year?
Yes, because of daylight saving. Until 1 Nov 2026: ACST is 13 h 30 min ahead of AST. From 1 Nov 2026 to 14 Mar 2027: ACST is 14 h 30 min ahead of AST. From 14 Mar 2027 to 3 Apr 2027: ACST is 13 h 30 min ahead of AST. From 3 Apr 2027 to 2 Oct 2027: ACST is 12 h 30 min ahead of AST. From 2 Oct 2027 to 7 Nov 2027: ACST is 13 h 30 min ahead of AST.
AST next changes its clocks on 1 Nov 2026 (back 1 h, to UTC−4), then on 14 Mar 2027 (forward 1 h, to UTC−3). ACST next changes its clocks on 4 Apr 2027 (back 1 h, to UTC+9:30), then on 3 Oct 2027 (forward 1 h, to UTC+10:30).
About AST and ACST
AST here means Atlantic Time, the clock in Halifax. Right now it is UTC−3. Strictly, AST is the winter name; in summer these places use ADT. This page follows their real clock all year.
ACST here means Australian Central Time, the clock in Adelaide. Right now it is UTC+10:30. Strictly, ACST is the winter name; in summer these places use ACDT. This page follows their real clock all year.
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Coming soonMore conversions
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