Skip to content
DateAlmanac

What is CST in IST?

India Standard Time is 11 hours 30 minutes ahead

Central Time is on UTC−6:00 and India Standard Time is on UTC+5:30 right now. The gap changes during the year — see below.

Convert a time

IST — India Standard Time

1:30 pm

IST, Sat

Time in Chicago
2:29:07 AM
Time in New Delhi
1:59:07 PM
Difference
+11:30 h
Next clock change
March 14, 2027

When the difference changes

Central Time and India Standard Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 14, 2027India Standard Time is 11 hours 30 minutes ahead
  2. March 14, 2027 – November 7, 2027India Standard Time is 10 hours 30 minutes ahead
  3. November 7, 2027 – onwardsIndia Standard Time is 11 hours 30 minutes ahead

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Central Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on CDT after that.

India Standard Time

No clock changes

India Standard Time stays on IST all year, so its offset from UTC never moves.

CST to IST conversion table

Every hour of Saturday, November 7, 2026, converted from Central Time to India Standard Time. 11 of the 24 hours fall on a different calendar day in New Delhi, which is marked.

12:00 am CST
11:30 am IST
1:00 am CST
12:30 pm IST
2:00 am CST
1:30 pm IST
3:00 am CST
2:30 pm IST
4:00 am CST
3:30 pm IST
5:00 am CST
4:30 pm IST
6:00 am CST
5:30 pm IST
7:00 am CST
6:30 pm IST
8:00 am CST
7:30 pm IST
9:00 am CST
8:30 pm IST
10:00 am CST
9:30 pm IST
11:00 am CST
10:30 pm IST
12:00 pm CST
11:30 pm IST
1:00 pm CST
12:30 am IST+1 day
2:00 pm CST
1:30 am IST+1 day
3:00 pm CST
2:30 am IST+1 day
4:00 pm CST
3:30 am IST+1 day
5:00 pm CST
4:30 am IST+1 day
6:00 pm CST
5:30 am IST+1 day
7:00 pm CST
6:30 am IST+1 day
8:00 pm CST
7:30 am IST+1 day
9:00 pm CST
8:30 am IST+1 day
10:00 pm CST
9:30 am IST+1 day
11:00 pm CST
10:30 am IST+1 day

Scheduling between the two

There is no overlap between a nine-to-six working day in Chicago and one in New Delhi — the gap is too wide. A call has to sit early or late for one side. Early morning in Chicago is the usual compromise, since that is late afternoon or evening in New Delhi.

A note on CST: it can also mean China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). This page means US Central Time.

A note on IST: it can also mean Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page means India Standard Time, which is what almost all searches for IST want.

Central Time (CST) is used in Dallas, Houston, Mexico City and Winnipeg

India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving

Other conversions