Home / Time Zone Converters / AST → IST
AST to IST
Convert AST (Atlantic Standard Time, UTC−04:00) to IST (India Standard Time, UTC+05:30). IST is 9 hours 30 minutes ahead of AST.
AST
—
Atlantic Standard Time
→
IST
—
India Standard Time
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AST to IST conversion chart (24-hour)
| AST | IST |
|---|---|
| 00:00 | 09:30 |
| 01:00 | 10:30 |
| 02:00 | 11:30 |
| 03:00 | 12:30 |
| 04:00 | 13:30 |
| 05:00 | 14:30 |
| 06:00 | 15:30 |
| 07:00 | 16:30 |
| 08:00 | 17:30 |
| 09:00 | 18:30 |
| 10:00 | 19:30 |
| 11:00 | 20:30 |
| 12:00 | 21:30 |
| 13:00 | 22:30 |
| 14:00 | 23:30 |
| 15:00 | 00:30 +1d |
| 16:00 | 01:30 +1d |
| 17:00 | 02:30 +1d |
| 18:00 | 03:30 +1d |
| 19:00 | 04:30 +1d |
| 20:00 | 05:30 +1d |
| 21:00 | 06:30 +1d |
| 22:00 | 07:30 +1d |
| 23:00 | 08:30 +1d |
AST to IST time conversion
The difference between AST and IST is fixed: IST is 9 hours 30 minutes ahead of AST. For example, 9:00 AM (09:00) AST is 18:30 IST, and 6:00 PM (18:00) AST is 03:30 IST. The chart above lists the conversion for every hour of the day.
These conversions use each zone’s standard UTC offset — UTC−04:00 for AST (Atlantic Standard Time) and UTC+05:30 for IST (India Standard Time) — so the result is exact and does not shift with Daylight Saving Time. To convert a real calendar date between cities with automatic DST handling, use the full time zone converter.