Central Daylight Time (cdt) is used in USA. The IANA timezone identifier is America/Chicago.

India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

CDT to IST Time Converter

Central Daylight Time → India Standard Time

CDT = UTC-5IST = UTC+5:30

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

CDT → Ireland Standard Time (Dublin) ↗CDT → Israel Standard Time (Jerusalem) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

IST (Mumbai)

India · +10.5h

19:30

London

United Kingdom · +6h

15:00

New York

USA · +1h

10:00

Tokyo

Japan · +14h

23:00

Dubai

United Arab Emirates · +9h

18:00

Time difference: CDT (Chicago) and IST (Mumbai)

CDT (Chicago) is 11 hours 30 minutes behind IST (Mumbai). At noon in CDT (Chicago), your contact in IST (Mumbai) sees 22:00.

CDT (Chicago) runs on America/Chicago; IST (Mumbai) runs on Asia/Kolkata. Together they are 10.5 hours 30 minutes apart.

Business hours comparison

There is no business hours overlap between CDT (Chicago) and IST (Mumbai) during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.

Best call times between these locations

CDT (Chicago) and IST (Mumbai) have no shared working window. These slots minimize out-of-hours disruption for both sides.

06:00 Chicago / 16:00 Mumbai⚡ One side off-hours

⚠️ 3h before working hours in Chicago

09:00 Chicago / 19:00 Mumbai⚡ One side off-hours

⚠️ 3h after working hours in Mumbai

05:00 Chicago / 15:00 Mumbai⚡ One side off-hours

⚠️ 4h before working hours in Chicago

Working hours defined as 09:00–17:00 local time for each location.

Public holidays for both locations

CDT (Chicago)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

IST (Mumbai)

No upcoming public holidays this year.

Scheduling between CDT (Chicago) and IST (Mumbai)

Teams in CDT (Chicago) (USA) and IST (Mumbai) (India) deal with a 10.5-hour gap that pushes their working days apart. Real-time meetings always require someone to stretch outside the standard 9–5.

💡 Scheduling tips for these locations

⚡

A 06:00 meeting in CDT (Chicago) means 16:00 in IST (Mumbai) (3h before working hours in Chicago).

⚡

A 09:00 meeting in CDT (Chicago) means 19:00 in IST (Mumbai) (3h after working hours in Mumbai).

⚡

A 05:00 meeting in CDT (Chicago) means 15:00 in IST (Mumbai) (4h before working hours in Chicago).

With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am CDT (Chicago)".

CDT (Chicago) ↔ IST (Mumbai)

No overlap — one side will join outside working hours

CDT (Chicago)

IST (Mumbai)

00:00

10:30Working

01:00

11:30Working

02:00

12:30Working

03:00

13:30Working

04:00

14:30Working

05:00

15:30Working

06:00

16:30Working

07:00

17:30

08:00

18:30

09:00Working

19:30off

10:00Working

20:30off

11:00Working

21:30off

12:00Working

22:30off

13:00Working

23:30off

14:00Working

00:30+1doff

15:00Working

01:30+1doff

16:00Working

02:30+1doff

17:00

03:30+1d

18:00

04:30+1d

19:00

05:30+1d

20:00

06:30+1d

21:00

07:30+1d

22:00

08:30+1d

23:00

09:30+1dWorking

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between cdt and ist?

Central Daylight Time (cdt) is UTC-5 and India Standard Time (ist) is UTC+5:30. The difference between them is 10.5 hours.

Where is cdt used?

Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.

Where is ist used?

India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.

How do I convert cdt to ist?

Use the interactive converter above. Drag the time slider to any cdt time and the ist equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular CDT conversions

CDT → London CDT → New York CDT → Tokyo CDT → Dubai CDT → Sydney CDT → Paris CDT → Berlin CDT → Singapore CDT → Los Angeles CDT → Toronto

Popular IST conversions

London → IST New York → IST Tokyo → IST Dubai → IST Sydney → IST Paris → IST Berlin → IST Singapore → IST Los Angeles → IST Toronto → IST