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

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

IST to CDT Time Converter

India Standard Time → Central Daylight Time

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

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

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

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

CDT (Chicago)

USA · -10.5h

22:30-1 day

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

IST (Mumbai) to CDT (Chicago) — exact time difference

IST (Mumbai) is 10 hours 30 minutes ahead of CDT (Chicago). At noon in IST (Mumbai), your contact in CDT (Chicago) sees 01:00.

IST (Mumbai) observes Asia/Kolkata and CDT (Chicago) observes America/Chicago — a 10.5 hours 30 minutes gap between them.

Working hours overlap

When IST (Mumbai) is in standard working hours, CDT (Chicago) is not — and vice versa. There is no mutual business window between these two locations.

Meeting time recommendations

No business hours overlap exists between IST (Mumbai) and CDT (Chicago). Showing the most balanced options with minimal inconvenience for both locations.

16:00 Mumbai / 05:00 Chicago⚡ One side off-hours

⚠️ 4h before working hours in Chicago

20:00 Mumbai / 09:00 Chicago⚡ One side off-hours

⚠️ 4h after working hours in Mumbai

15:00 Mumbai / 04:00 Chicago⚡ One side off-hours

⚠️ 5h before working hours in Chicago

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Public holidays for both locations

IST (Mumbai)

No upcoming public holidays this year.

CDT (Chicago)7 holidays

Jul 3Independence DaySOON

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Nov 11Veterans Day

Scheduling between IST (Mumbai) and CDT (Chicago)

Working across IST (Mumbai) (India) and CDT (Chicago) (USA) is a challenge — the 10.5-hour difference means no shared business hours window under a standard schedule. Flexibility from at least one side is required.

💡 Scheduling tips for these locations

⚡

16:00–17:00 in IST (Mumbai) corresponds to 05:00–06:00 in CDT (Chicago) (4h before working hours in Chicago).

⚡

20:00–21:00 in IST (Mumbai) corresponds to 09:00–10:00 in CDT (Chicago) (4h after working hours in Mumbai).

⚡

15:00–16:00 in IST (Mumbai) corresponds to 04:00–05:00 in CDT (Chicago) (5h before working hours in Chicago).

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

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any IST (Mumbai) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

IST (Mumbai) ↔ CDT (Chicago)

No overlap — one side will join outside working hours

IST (Mumbai)

CDT (Chicago)