India (IST) is 11 hours 30 minutes ahead of Central Standard Time (CST). Convert any time between Chicago, Dallas, Houston, and India instantly with live clocks.
Common Central Time to India time conversions with working hours indication.
| CST — Chicago | IST — India | Status |
|---|---|---|
| 5:00 AM | 4:30 PM | IST working |
| 6:00 AM | 5:30 PM | Best overlap window |
| 7:00 AM | 6:30 PM | Best overlap window |
| 8:00 AM | 7:30 PM | Both working |
| 9:00 AM | 8:30 PM | Late for India |
| 10:00 AM | 9:30 PM | CST only |
| 12:00 PM | 11:30 PM | CST only |
| 2:00 PM | 1:30 AM +1 | CST only |
| 5:00 PM | 4:30 AM +1 | India asleep |
| 8:00 PM | 7:30 AM +1 | IST starting |
| 10:00 PM | 9:30 AM +1 | IST working |
CST (Central Standard Time) is UTC-6, used by major US cities including Chicago, Dallas, Houston, San Antonio, Austin, Memphis, Minneapolis, New Orleans, Kansas City, and Oklahoma City. From March to November, CST switches to CDT (Central Daylight Time, UTC-5), reducing the difference to IST by 1 hour.
IST (India Standard Time) is UTC+5:30, used across all of India and Sri Lanka. India does not observe daylight saving time, so IST stays the same year-round. The half-hour offset is unusual but established back in 1906.
The total offset between CST and IST is +11 hours 30 minutes — meaning India is 11.5 hours ahead of Central Standard Time. During US summer (CDT), this gap reduces to 10 hours 30 minutes.
For most US-India remote teams in Central Time, the best call window is 7:00 to 8:30 AM CST, which lands at 6:30 to 8:00 PM IST. This is the only overlap where both sides are within reasonable working or evening hours.
If you cannot do morning calls, the next-best option is 8:00 PM CST (7:30 AM IST next day) — late evening in Chicago, early morning in India. Avoid scheduling between 11 AM and 6 PM CST as that lands during India's night.
The US observes Daylight Saving Time, but India does not. This means the CST-IST gap changes twice a year:
Set a calendar reminder for the 2nd Sunday in March and 1st Sunday in November to review any recurring meetings with India.