CST to IST converter
9 am CST is 8:30 pm IST.
IST is 11½ hours ahead of CST.
CST is Central Standard Time, UTC−6. IST is India Standard Time, UTC+5:30. To convert, add 11½ hours.
9 am CST is 8:30 pm IST.
CST to IST, hour by hour
| CST UTC−6 | IST UTC+5:30 |
|---|---|
| 12 am | 11:30 am |
| 1 am | 12:30 pm |
| 2 am | 1:30 pm |
| 3 am | 2:30 pm |
| 4 am | 3:30 pm |
| 5 am | 4:30 pm |
| 6 am | 5:30 pm |
| 7 am | 6:30 pm |
| 8 am | 7:30 pm |
| 9 am | 8:30 pm |
| 10 am | 9:30 pm |
| 11 am | 10:30 pm |
| 12 pm | 11:30 pm |
| 1 pm | 12:30 am +1 day |
| 2 pm | 1:30 am +1 day |
| 3 pm | 2:30 am +1 day |
| 4 pm | 3:30 am +1 day |
| 5 pm | 4:30 am +1 day |
| 6 pm | 5:30 am +1 day |
| 7 pm | 6:30 am +1 day |
| 8 pm | 7:30 am +1 day |
| 9 pm | 8:30 am +1 day |
| 10 pm | 9:30 am +1 day |
| 11 pm | 10:30 am +1 day |
Daylight saving
CST is Chicago’s winter clock. Right now Chicago is on CDT (UTC−5), not CST. It switches to CST on Sunday, November 1, 2026 and back on Sunday, March 14, 2027.
IST doesn’t change for daylight saving.
If you mean the clocks in Chicago and Mumbai, whatever they’re on: Mumbai is 10½ hours ahead of Chicago now, then 11½ hours from Sunday, November 1, 2026, then 10½ hours from Sunday, March 14, 2027.
CST here means Central Standard Time. The same letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5).
IST here means India Standard Time. The same letters are also used for Irish Standard Time (Ireland in summer, UTC+1) and Israel Standard Time (UTC+2).
Questions
What is 9 am CST in IST?
9 am CST is 8:30 pm IST.
How many hours ahead is IST of CST?
IST is 11½ hours ahead of CST.
What is 5 pm CST in IST?
5 pm CST is 4:30 am IST the next day.