CST to IST converter

CST to IST quick reference

CST or CDT? Daylight saving explained

CST (UTC−6) is the winter name and CDT (UTC−5) the summer name. “CST” usually means local Central time (Chicago, Dallas, Houston) whatever the season, so MeetETA reads it that way and handles daylight saving for the date you pick.

IST is India Standard Time, UTC+5:30, used across all of India. India does not use daylight saving, so IST never changes.

Right now Chicago is on CDT, UTC−5 and India is on IST, UTC+5:30 (the clocks at the top of the page always show the live values).

How the gap changes during the year

India is 10.5 hours ahead of Chicago while Chicago is on CDT, and 11.5 hours ahead of Chicago while Chicago is on CST.

Working-day overlap, hour by hour

Each row is an hour in Chicago. Green means that side is inside a 9–5 working day. While Chicago is on CDT there is no shared 9–5 time; the easiest window is 7 AM–11:30 AM CDT (5:30 PM–10 PM IST). While Chicago is on CST there is no shared 9–5 time; the easiest window is 7 AM–10:30 AM CST (6:30 PM–10 PM IST).

Shows Chicago 5 AM to 10 PM. Times on the India side may fall on the next day.

Example conversions

Questions people ask

What is the time difference between CST and IST?

India is 10 h 30 m ahead of Chicago while Chicago is on CDT, and 11 h 30 m ahead of Chicago while Chicago is on CST. Right now it is 10 h 30 m.

Does the CST to IST difference change with daylight saving?

Yes. US Central Time changes its clocks and India Standard Time does not, so the gap moves by an hour twice a year (next on Sun 1 Nov 2026).

How do I convert 3 PM CST to IST?

While Chicago is on CDT, 3 PM CDT is 1:30 AM IST the next day. While Chicago is on CST, 3 PM CST is 2:30 AM IST the next day. Or just type “3 PM CST” in the converter at the top of this page.

When can US Central time and India meet during work hours?

While Chicago is on CDT there is no shared 9–5 time; the most comfortable window is 7 AM–11:30 AM CDT (5:30 PM–10 PM IST). While Chicago is on CST there is no shared 9–5 time; the most comfortable window is 7 AM–10:30 AM CST (6:30 PM–10 PM IST).

What time is 9 PM IST in CST?

While Chicago is on CDT, 9 PM IST is 10:30 AM CDT. While Chicago is on CST, 9 PM IST is 9:30 AM CST. For other times, type something like “9 PM IST” in the converter.

Should I write CST or CDT?

CST (UTC−6) is the winter name and CDT (UTC−5) the summer name. “CST” usually means local Central time (Chicago, Dallas, Houston) whatever the season, so MeetETA reads it that way and handles daylight saving for the date you pick.

Is MeetETA free?

Yes. MeetETA is free, shows no ads and needs no account. Your cities and settings stay in your browser, and where consent is required, analytics only load after you accept cookies.