IST to CST
Live, right now. Asia/Kolkata → America/Chicago
Clocks here do not change — this zone stays on the same offset all year.
Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change).
Convert a specific time minutes work, not just whole hours
Hour by hour
| IST | CST | 24h | Good to call? |
|---|---|---|---|
| 12am | 1pm Wed | 00:00 → 13:30 | asleep in IST |
| 1am | 2pm Wed | 01:00 → 14:30 | asleep in IST |
| 2am | 3pm Wed | 02:00 → 15:30 | asleep in IST |
| 3am | 4pm Wed | 03:00 → 16:30 | asleep in IST |
| 4am | 5pm Wed | 04:00 → 17:30 | asleep in IST |
| 5am | 6pm Wed | 05:00 → 18:30 | asleep in IST |
| 6am | 7pm Wed | 06:00 → 19:30 | asleep in IST |
| 7am | 8pm Wed | 07:00 → 20:30 | awake, not at work |
| 8am | 9pm Wed | 08:00 → 21:30 | awake, not at work |
| 9am | 10pm Wed | 09:00 → 22:30 | asleep in CST |
| 10am | 11pm Wed | 10:00 → 23:30 | asleep in CST |
| 11am | 12am | 11:00 → 00:30 | asleep in CST |
| 12pm | 1am | 12:00 → 01:30 | asleep in CST |
| 1pm | 2am | 13:00 → 02:30 | asleep in CST |
| 2pm | 3am | 14:00 → 03:30 | asleep in CST |
| 3pm | 4am | 15:00 → 04:30 | asleep in CST |
| 4pm | 5am | 16:00 → 05:30 | asleep in CST |
| 5pm | 6am | 17:00 → 06:30 | asleep in CST |
| 6pm | 7am | 18:00 → 07:30 | awake, not at work |
| 7pm | 8am | 19:00 → 08:30 | awake, not at work |
| 8pm | 9am | 20:00 → 09:30 | awake, not at work |
| 9pm now | 10am | 21:00 → 10:30 | awake, not at work |
| 10pm | 11am | 22:00 → 11:30 | asleep in IST |
| 11pm | 12pm | 23:00 → 12:30 | asleep in IST |
Call times
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
1pm
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Questions people ask
What time is it in CST when it is 9:33 pm in IST?
11:03 am in CST the same day.
How many hours ahead is CST of IST?
CST is 10 hours 30 minutes behind IST. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between IST and CST?
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.