Convert India Standard Time to US Central Time, with daylight saving handled automatically.
Home row (top) sets the day. DST handled automatically via Intl.
Popular:
Working hours (9–17)DaytimeNightNowSelected
IST to CST — India to Chicago time
India Standard Time (IST) is UTC+5:30 and never changes. US Central Time is CST (UTC−6) in winter and CDT (UTC−5) in summer, so the India–Chicago gap shifts by one hour across the year.
Period
Difference
Summer (US daylight time, CDT)
India is 10.5 hours ahead
Winter (US standard time, CST)
India is 11.5 hours ahead
Early morning in the US Central zone (around 8–10 AM CT) falls in the India evening (roughly 6:30–8:30 PM IST) — a workable window for a call.
Frequently asked questions
What is the time difference between IST and CST?
IST (UTC+5:30) is 11.5 hours ahead of US Central Standard Time, and 10.5 hours ahead during US daylight saving (CDT).
What time is 9 AM CST in India?
9:00 AM CST is 8:30 PM IST the same day. During US daylight saving (CDT), 9:00 AM is 7:30 PM IST.
Does India observe daylight saving time?
No. India uses a single fixed zone (IST, UTC+5:30) all year, so the India–US difference only shifts when the US changes its clocks.