Time Difference Between Chicago and Kolkata

Chicago is 10h 30m behind Kolkata. This difference shifts by an hour around daylight saving time changes.

Chicago, United States
11:09:57PM

Monday, June 22, 2026

UTC-5 · CDT

Kolkata, India
9:39:57AM

Tuesday, June 23, 2026

UTC+5:30

Best time to connect

Standard working hours (9:00 AM–5:00 PM) in Chicago fall between 7:30 PM and 3:30 AM (next day) in Kolkata.

Chicago

UTC-5

Current time in Chicago →

Kolkata

UTC+5:30

Current time in Kolkata →
Convert a specific time from Chicago to Kolkata

Frequently asked questions

How many hours is Kolkata ahead of Chicago?
Chicago is 10h 30m behind Kolkata. Note that this changes by an hour across daylight saving time transitions.
Do Chicago and Kolkata observe daylight saving time?
Chicago observes daylight saving time, and Kolkata does not observe it. Because of that, the gap is 11h 30m for part of the year and 10h 30m for the rest.