TimeToZone

IST to Chicago Time Converter

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

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

IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Chicago Time (Chicago time) is used in Chicago, USA.

IST here means India Standard Time, not Irish or Israel Standard Time.

IST to Chicago Time time conversion table

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

ISTChicago TimeDay
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 IST to Chicago Time

Subtract 11 hours 30 minutes from the IST time to get Chicago Time.

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 IST and Chicago Time

The time difference between IST and Chicago Time 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: Chicago Time is 11 hours 30 minutes behind of IST.
  • 8 Mar 2026 – 31 Oct 2026: Chicago Time is 10 hours 30 minutes behind of IST.
  • 1 Nov 2026 – 31 Dec 2026: Chicago Time is 11 hours 30 minutes behind of IST.

IST and Chicago Time during daylight saving time

  • IST does not observe daylight saving time; it stays on UTC+5:30 all year.
  • Chicago Time 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 IST and Chicago Time

IST and Chicago Time 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.

IST to Chicago Time FAQ

What is the time difference between IST and Chicago Time?

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 IST in Chicago Time?

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

What is 12 PM (noon) IST in Chicago Time?

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

Is Chicago Time ahead of or behind IST?

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

Does IST change for daylight saving time?

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

Does Chicago Time change for daylight saving time?

Yes. Chicago Time 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 IST and Chicago Time?

IST and Chicago Time 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.

Related conversions

Convert Chicago Time to IST

Convert IST to other time zones

Convert other time zones to Chicago Time

Learn more

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