TimeToZone

Kolkata Time to CST Converter

CST is 11 hours 30 minutes behind IST. 9:00 AM IST = 9:30 PM CST (previous day).

⇄ Swap
Kolkatafrom
Kolkata, India
--:--
 
CST
Central Standard Time
--:--
 

CST is 11 hours 30 minutes behind IST at the moment. To convert Kolkata Time to CST, subtract 11 hours 30 minutes from the Kolkata Time time: 9:00 AM IST = 9:30 PM CST (previous day).

Kolkata Time (Kolkata time) is used in Kolkata, India. CST (Central Time) is used in Chicago, Dallas, Houston, Minneapolis, New Orleans, Winnipeg; Mexico City and Central America use UTC−6 all year.

CST here means North American Central Standard Time, not China Standard Time.

Kolkata Time to CST time conversion table

Kolkata Time to CST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

Kolkata TimeCSTDay
12:00 AM IST12:30 PM CSTprevious day
1:00 AM IST1:30 PM CSTprevious day
2:00 AM IST2:30 PM CSTprevious day
3:00 AM IST3:30 PM CSTprevious day
4:00 AM IST4:30 PM CSTprevious day
5:00 AM IST5:30 PM CSTprevious day
6:00 AM IST6:30 PM CSTprevious day
7:00 AM IST7:30 PM CSTprevious day
8:00 AM IST8:30 PM CSTprevious day
9:00 AM IST9:30 PM CSTprevious day
10:00 AM IST10:30 PM CSTprevious day
11:00 AM IST11:30 PM CSTprevious day
12:00 PM IST12:30 AM CSTnight
1:00 PM IST1:30 AM CSTnight
2:00 PM IST2:30 AM CSTnight
3:00 PM IST3:30 AM CSTnight
4:00 PM IST4:30 AM CSTnight
5:00 PM IST5:30 AM CSTnight
6:00 PM IST6:30 AM CST—
7:00 PM IST7:30 AM CST—
8:00 PM IST8:30 AM CST—
9:00 PM IST9:30 AM CST—
10:00 PM IST10:30 AM CST—
11:00 PM IST11:30 AM CST—
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert Kolkata Time to CST

Subtract 11 hours 30 minutes from the Kolkata Time time to get CST.

Example: 9:00 AM IST = 9:30 PM CST (previous day).

Across midnight: 1:00 AM IST = 1:30 PM CST (previous day). The date changes, so always check the day as well as the hour.

Time difference between Kolkata Time and CST

The time difference between Kolkata Time and CST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:

  • 1 Jan 2026 – 7 Mar 2026: CST is 11 hours 30 minutes behind of Kolkata Time.
  • 8 Mar 2026 – 31 Oct 2026: CST is 10 hours 30 minutes behind of Kolkata Time.
  • 1 Nov 2026 – 31 Dec 2026: CST is 11 hours 30 minutes behind of Kolkata Time.

Kolkata Time and CST during daylight saving time

  • Kolkata Time does not observe daylight saving time; it stays on UTC+5:30 all year.
  • CST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from CST (UTC−6) to CDT (UTC−5).

Best time for a meeting between Kolkata Time and CST

Kolkata Time and CST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 7:30 PM CST.

Plan a meeting across more time zones.

Kolkata Time to CST FAQ

What is the time difference between Kolkata Time and CST?

Right now CST is 11 hours 30 minutes behind IST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.

What is 9 AM Kolkata Time in CST?

9:00 AM IST is 9:30 PM CST (previous day).

What is 12 PM (noon) Kolkata Time in CST?

12:00 PM IST is 12:30 AM CST.

Is CST ahead of or behind Kolkata Time?

CST is 11 hours 30 minutes behind IST, so it is earlier in CST than in Kolkata Time.

Does Kolkata Time change for daylight saving time?

No. Kolkata Time stays on the same offset all year, so conversions never shift for daylight saving time.

Does CST change for daylight saving time?

Yes. CST next changes on 14 Mar 2027, when clocks go forward one hour from CST to CDT.

What is the best time for a meeting between Kolkata Time and CST?

Kolkata Time and CST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 7:30 PM CST.

Is CT the same as CST?

CST is the winter (standard) name of Central Time (CT). From March to November the same clocks are called CDT. This converter always uses the one in force on the date you choose.

Related conversions

Convert CST to Kolkata Time

Convert Kolkata Time to other time zones

Convert other time zones to CST

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.