Does Chennai observe daylight saving time?

No. Chennai stays on IST (UTC+5:30) all year, so its clocks don't change.

Does Chicago observe daylight saving time?

Yes. Chicago is on CDT (UTC-5) now, and its clocks go back 1 hour on Sun, Nov 1, to CST (UTC-6).

What time is it in Chicago when it's 9 AM in Chennai?

10:30 PM in Chicago, the day before (Sat, Oct 17, when it's Sun, Oct 18 in Chennai).

Chennai to Chicago Meeting Planner

Chicago is 10 hours 30 minutes behind Chennai right now. Their working days don't overlap today.

Chennai · India

9:03 AM

Sun, Oct 18 · IST

Chicago · United States

10:33 PM

Sat, Oct 17 · CDT · summer time

Best Meeting Times Between Chennai and Chicago

No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 7:30 PM in Chennai, which is 9:00 AM in Chicago; consider splitting into two shorter meetings or shifting someone's hours.

Who's meeting

2 of 4 places

ChennaiOrganizerIndia ·9:03AMnow
ChicagoUnited States ·· summer time10:33PMYesterday · now

Add a city

Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Chennai

Working hours, everywhere

Best times to meet

Sunday, October 18, 2026, in Chennai time.

7:30PMBest · GoodWorking hours in Chicago (09:00); just outside working hours in Chennai (19:30).
9:00AMOption 2 · PossibleWorking hours in Chennai (09:00); late evening in Chicago (22:30, previous day).
8:00PMOption 3 · PossibleWorking hours in Chicago (09:30); late evening in Chennai (20:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a half hour of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
ChennaiIST
ChicagoCDT
UTC	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Chennai7:30 PM ISTSun, Oct 18
Chicago9:00 AM CDTSun, Oct 18
UTC2026-10-18 14:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Chennai and Chicago

Chicago is 10 hours 30 minutes behind Chennai right now: Chicago is on CDT (UTC-5) and Chennai on IST (UTC+5:30). That changes on Sun, Nov 1, when clocks go back in Chicago: then Chicago is 11 hours 30 minutes behind Chennai.

Time difference between Chennai and Chicago over the next 12 months
From	Difference	Why
Now	Chicago 10 hours 30 minutes behind	—
Sun, Nov 1	Chicago 11 hours 30 minutes behind	Clocks go back in Chicago
Sun, Mar 14, 2027	Chicago 10 hours 30 minutes behind	Clocks go forward in Chicago

Chennai is on India Standard Time. Chicago is on Central Standard Time.

Frequently Asked Questions: Chennai & Chicago Scheduling

What is the time difference between Chennai and Chicago?: Chicago is 10 hours 30 minutes behind Chennai right now: Chicago is on CDT (UTC-5) and Chennai on IST (UTC+5:30). That changes on Sun, Nov 1, when clocks go back in Chicago: then Chicago is 11 hours 30 minutes behind Chennai.
What is the best time to schedule a meeting between Chennai and Chicago?: No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 7:30 PM in Chennai, which is 9:00 AM in Chicago; consider splitting into two shorter meetings or shifting someone's hours.
Does Chennai observe daylight saving time?: No. Chennai stays on IST (UTC+5:30) all year, so its clocks don't change.
Does Chicago observe daylight saving time?: Yes. Chicago is on CDT (UTC-5) now, and its clocks go back 1 hour on Sun, Nov 1, to CST (UTC-6).
What time is it in Chicago when it's 9 AM in Chennai?: 10:30 PM in Chicago, the day before (Sat, Oct 17, when it's Sun, Oct 18 in Chennai).

Or see every city pair, or plan with more places in the meeting planner.