Live Current Time
CST
US Central
--:--
Loading...
IST
India
--:--
Loading...
Convert a specific hour
CST
--:-- IST

CST to IST Conversion Table — Standard Time

Offset: CST +11.5 hours = IST. Applies during standard time. Work hours (9 AM–5 PM) highlighted.

CST IST
00:00 11:30
01:00 12:30
02:00 13:30
03:00 14:30
04:00 15:30
05:00 16:30
06:00 17:30
07:00 18:30
08:00 19:30
09:00 20:30
10:00 21:30
11:00 22:30
12:00 23:30
13:00 00:30 (+1 day)
14:00 01:30 (+1 day)
15:00 02:30 (+1 day)
16:00 03:30 (+1 day)
17:00 04:30 (+1 day)
18:00 05:30 (+1 day)
19:00 06:30 (+1 day)
20:00 07:30 (+1 day)
21:00 08:30 (+1 day)
22:00 09:30 (+1 day)
23:00 10:30 (+1 day)

CDT to IST Conversion Table — Daylight Saving

Offset: CDT +10.5 hours = IST. Applies when US Central is observing daylight saving time.

CDT IST
00:00 10:30
01:00 11:30
02:00 12:30
03:00 13:30
04:00 14:30
05:00 15:30
06:00 16:30
07:00 17:30
08:00 18:30
09:00 19:30
10:00 20:30
11:00 21:30
12:00 22:30
13:00 23:30
14:00 00:30 (+1 day)
15:00 01:30 (+1 day)
16:00 02:30 (+1 day)
17:00 03:30 (+1 day)
18:00 04:30 (+1 day)
19:00 05:30 (+1 day)
20:00 06:30 (+1 day)
21:00 07:30 (+1 day)
22:00 08:30 (+1 day)
23:00 09:30 (+1 day)

Companies headquartered in Chicago, Dallas, and Minneapolis outsource heavily to India. Insurance, healthcare IT, and logistics firms in the Central time zone rely on development teams in Bangalore, Hyderabad, and Pune. The CST–IST conversion is part of their daily routine.

India Standard Time is UTC+5:30 with no daylight saving time. Central Standard Time is UTC−6, shifting to CDT (UTC−5) in summer. The standard gap is 11 hours 30 minutes: 9 AM in Chicago is 8:30 PM in India. During CDT the gap narrows to 10 hours 30 minutes.

The overlap window is slightly better than from the East Coast. A 7:30–9:30 AM Central meeting hits 7–9 PM IST during winter, or 6–8 PM IST during summer — both workable for Indian teams willing to stay a bit late.

Daylight Saving Time: What Changes

US Central observes daylight saving time, but India does not. This means the offset between CST and IST changes seasonally: 11.5 hours during standard time and 10.5 hours during daylight saving. Double-check the current offset during transition weeks in March and November.

Frequently Asked Questions

What is the time difference between CST and IST?

IST is 11 hours and 30 minutes ahead of CST. During US daylight saving time (CDT), the gap shrinks to 10 hours and 30 minutes. India does not observe DST.

Does DST change the CST-to-IST offset?

Yes. When the US Central zone shifts to CDT (UTC−5), the gap drops from 11.5 to 10.5 hours. India stays on IST (UTC+5:30) year-round, so the change comes only from the US side.

What is a good meeting time for Central US and India?

Aim for 7:30–9:30 AM Central, which is 7–9 PM IST in winter or 6–8 PM IST in summer. This catches the end of India’s workday and the start of the US Central workday. Meetings after 10 AM Central push past Indian business hours.

Your calendar + time zones, at a glance.

See your schedule instantly, convert time zones, and get meeting alerts—without switching tabs.