On Tuesday 6 October 2026, Chicago is 10 hours 30 minutes behind India. India is on IST, and Chicago is on CDT. So 9:00 AM IST in India is 10:30 PM CDT in Chicago the day before.
CST is Central Time's winter name. Chicago is on CDT until Sunday 1 November 2026.
10:30 PM
Monday 5 October 2026Previous day
9:00 AM IST in Kolkata on Tuesday 6 October 2026 is 10:30 PM CDT in Chicago on Monday 5 October 2026.
Chicago is 10 hours 30 minutes behind Kolkata on this date.
From Sunday 1 November 2026, Chicago is 11 hours 30 minutes behind Kolkata.
| India | Chicago |
|---|---|
| 6:00 AM IST | 7:30 PM CDT the day before |
| 9:00 AM IST | 10:30 PM CDT the day before |
| 12:00 PM IST | 1:30 AM CDT |
| 3:00 PM IST | 4:30 AM CDT |
| 6:00 PM IST | 7:30 AM CDT |
| 9:00 PM IST | 10:30 AM CDT |
On Sunday 1 November 2026, clocks in Chicago go back.
From then, Chicago is 11 hours 30 minutes behind India.
On Sunday 14 March 2027, clocks in Chicago go forward.
From then, Chicago is 10 hours 30 minutes behind India.