IST to Thailand time conversion
Thailand is 1 hour 30 minutes ahead of IST.
Time difference with your location
IST is 5 hours 30 minutes ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in IST to convert it to Thailand on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · IST → Thailand
This table converts each hour in IST to Thailand on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| IST | Thailand | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 01:301:30 AM | |
| 01:001:00 AM | 02:302:30 AM | |
| 02:002:00 AM | 03:303:30 AM | |
| 03:003:00 AM | 04:304:30 AM | |
| 04:004:00 AM | 05:305:30 AM | |
| 05:005:00 AM | 06:306:30 AM | |
| 06:006:00 AM | 07:307:30 AM | |
| 07:007:00 AM | 08:308:30 AM | |
| 08:008:00 AM | 09:309:30 AM | ✓ |
| 09:009:00 AM | 10:3010:30 AM | ✓ |
| 10:0010:00 AM | 11:3011:30 AM | ✓ |
| 11:0011:00 AM | 12:3012:30 PM | ✓ |
| 12:0012:00 PM | 13:301:30 PM | ✓ |
| 13:001:00 PM | 14:302:30 PM | ✓ |
| 14:002:00 PM | 15:303:30 PM | ✓ |
| 15:003:00 PM | 16:304:30 PM | ✓ |
| 16:004:00 PM | 17:305:30 PM | ✓ |
| 17:005:00 PM | 18:306:30 PM | |
| 18:006:00 PM | 19:307:30 PM | |
| 19:007:00 PM | 20:308:30 PM | |
| 20:008:00 PM | 21:309:30 PM | |
| 21:009:00 PM | 22:3010:30 PM | |
| 22:0010:00 PM | 23:3011:30 PM | |
| 23:0011:00 PM | 00:3012:30 AM +1 day |
Quick conversion examples
These examples use IST (UTC+5:30) and Thailand (UTC+7); choosing a date applies the local clock changes.
Conversion formula: Thailand = IST + 1h30.
| IST | Thailand |
|---|---|
| 6:00 AM IST | = 7:30 AM Thailand |
| 7:00 AM IST | = 8:30 AM Thailand |
| 8:00 AM IST | = 9:30 AM Thailand |
| 9:00 AM IST | = 10:30 AM Thailand |
| 10:00 AM IST | = 11:30 AM Thailand |
| 12:00 PM IST | = 1:30 PM Thailand |
| 3:00 PM IST | = 4:30 PM Thailand |
| 5:00 PM IST | = 6:30 PM Thailand |
| 6:00 PM IST | = 7:30 PM Thailand |
| 8:00 PM IST | = 9:30 PM Thailand |
Overlapping meeting hours
The 08:00–18:00 working day in IST and Thailand overlaps for 8 hours 30 minutes on 2026-10-21.
- Shared working hours
- 08:00–16:30 IST · 09:30–18:00 Thailand
Clock changes on both sides, 2026–2028
IST and Thailand have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | IST | Thailand |
|---|---|---|
| 2026 | No clock changes; UTC+5:30 all year. | No clock changes; UTC+7 all year. |
| 2027 | No clock changes; UTC+5:30 all year. | No clock changes; UTC+7 all year. |
| 2028 | No clock changes; UTC+5:30 all year. | No clock changes; UTC+7 all year. |
The difference between IST and Thailand stays constant throughout 2026–2028: Thailand is 1 hour 30 minutes ahead of IST.
Frequently asked questions
What time is 9 AM IST in Thailand?
9:00 AM IST = 10:30 AM Thailand, using UTC+5:30 and UTC+7. Choose a date above for the seasonal local time.
Does the time difference between IST and Thailand change during the year?
No. Throughout 2026–2028: Thailand is 1 hour 30 minutes ahead of IST.
How do I tell whether it is day or night in Thailand?
Read the Thailand clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between IST and Thailand?
The shared 08:00–18:00 working window is 08:00–16:30 IST / 09:30–18:00 Thailand, a total of 8 hours 30 minutes.
What is the time difference between IST and Thailand now?
Right now, Thailand is 1 hour 30 minutes ahead of IST. Conversion formula: Thailand = IST + 1h30.