AST to IST Time Converter
Convert Arabia Standard Time to India Standard Time. Right now, AST is 2h 30m behind IST.
AST · Riyadh
10:34 PM
UTC +3 · Saudi Arabia
IST · Delhi
1:04 AM
UTC +5:30 · India
Time across cities
Time Zone Converter
Click any hour to see what it lands on in every city. The first row's hours run 12am to 11pm — every other row is its local time at the same instant.
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Riyadh
UTC +3anchor
Delhi
UTC +5:30
Right now
Riyadh
10:34 PM
Sat, May 9
Delhi
1:04 AM
Sun, May 10
Quick reference
When it's this time in Riyadh:
| Riyadh | Delhi |
|---|---|
| 6:00 AM | 8:30 AM |
| 9:00 AM | 11:30 AM |
| 12:00 PM | 2:30 PM |
| 3:00 PM | 5:30 PM |
| 6:00 PM | 8:30 PM |
| 9:00 PM | 11:30 PM |
About AST and IST
AST (Arabia Standard Time) covers Saudi Arabia, Qatar, Kuwait, Bahrain, and Iraq and is anchored to the IANA zone Asia/Riyadh. It does not observe daylight saving time — the offset stays fixed all year.
IST (India Standard Time) covers India via Asia/Kolkata. It does not observe daylight saving time.
Neither AST nor IST observes DST, so the offset between them is constant year-round at 2h 30m.
FAQ
- How many hours difference between AST and IST?
- Right now, AST is 2h 30m behind IST. Because neither zone observes daylight saving time, this gap stays constant year-round.
- What time is 9 AM AST in IST?
- 9 AM AST (Riyadh) is 11:30 AM IST (Delhi) today. Click any cell in the grid above to convert other times — the math handles DST and half-hour offsets correctly.
- Does AST observe daylight saving time?
- No. Arabia Standard Time stays at a fixed offset year-round. The hour grid above will show the same difference whether you check in summer or winter.
- What's the IANA timezone identifier for AST and IST?
- AST → Asia/Riyadh. IST → Asia/Kolkata. We use IANA identifiers (not GMT offsets) as the source of truth so historical and future dates remain accurate, including across DST changes and political timezone shifts.
- Where can I see the overlap between AST and IST working hours?
- Click "Working hrs" in the toolbar above to highlight hours where all selected cities have overlapping business hours. The amber highlight shows which columns work for scheduling meetings across time zones.
- Which countries use AST and IST?
- AST (Arabia Standard Time) is used in Saudi Arabia, Qatar, Kuwait, Bahrain, and Iraq. IST (India Standard Time) is used in India. If you're converting time between any of these countries, this is the right page.