IST to ChST Converter
ChST is 4.5 hours ahead of IST.
IST
Friday, October 2, 2026
India Standard Time · UTC+5:30
ChST
Friday, October 2, 2026
Chamorro Standard Time · UTC+10
Convert IST to ChST
IST 04:41 = ChST 09:11
IST to ChST time chart, hour by hour
| IST | ChST |
|---|
| 00:00 | 04:30 |
| 01:00 | 05:30 |
| 02:00 | 06:30 |
| 03:00 | 07:30 |
| 04:00 | 08:30 |
| 05:00 | 09:30 |
| 06:00 | 10:30 |
| 07:00 | 11:30 |
| 08:00 | 12:30 |
| 09:00 | 13:30 |
| 10:00 | 14:30 |
| 11:00 | 15:30 |
| 12:00 | 16:30 |
| 13:00 | 17:30 |
| 14:00 | 18:30 |
| 15:00 | 19:30 |
| 16:00 | 20:30 |
| 17:00 | 21:30 |
| 18:00 | 22:30 |
| 19:00 | 23:30 |
| 20:00 | 00:30 +1 day |
| 21:00 | 01:30 +1 day |
| 22:00 | 02:30 +1 day |
| 23:00 | 03:30 +1 day |
Highlighted rows fall within 09:00–18:00 in both places: 5 shared working hours.
How many hours is IST behind ChST?
As abbreviations, ChST is always 4.5 hours ahead of IST: IST is UTC+5:30 and ChST is UTC+10. To convert, add 4.5 hours.
Does the IST to ChST time difference change?
No. Chst is 4.5 hours ahead of ist all year, because neither place changes its clocks.
When IST and ChST are both at work
- When ChST is 4.5 hours ahead of IST: 4 shared office hours, 09:00 to 13:00 in IST (13:30 to 17:30 in ChST).
Frequently asked questions about IST and ChST time
How many hours ahead is ChST of IST?
ChST (UTC+10) is 4.5 hours ahead of IST (UTC+5:30).
Does the time difference between IST and ChST change during the year?
No, it stays 4.5 hours ahead all year because neither place changes its clocks.