IST to CDT Time Converter

Convert India Standard Time (IST) to Central Daylight Time (CDT). Both time zones are shown live below; current offset between them is 10h 30m behind.

Mumbai · India Standard Time
16:17:32
Friday, May 15, 2026
GMT+5:30 · UTC+05:30
Chicago · Central Daylight Time
05:47:32
Friday, May 15, 2026
CDT · UTC-05:00

Convert a specific time

From: IST (Mumbai)
To: CDT (Chicago)
--:--

Daylight Saving status right now

IST (India Standard Time)
Observes DST
No
CDT (Central Daylight Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-05:00 → UTC-06:00

Heads up: CDT observes DST while IST does not. The 10.5-hour difference shown above will shift by one hour when CDT starts or ends DST.

When can IST and CDT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
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23
IST
CDT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Mumbai (IST). Each row shows the local working-hours state in that zone for the same moment in time.
No business-hours overlap exists between IST and CDT.
The two zones are too far apart for synchronous meetings during normal working hours. Plan async or schedule outside 9-5 on at least one side.

Hour-by-hour IST to CDT conversion table

IST time (Mumbai)CDT time (Chicago)Status
00:00 Fri13:30 ThuCDT working
01:00 Fri14:30 ThuCDT working
02:00 Fri15:30 ThuCDT working
03:00 Fri16:30 ThuCDT working
04:00 Fri17:30 ThuOff-hours both sides
05:00 Fri18:30 ThuOff-hours both sides
06:00 Fri19:30 ThuOff-hours both sides
07:00 Fri20:30 ThuOff-hours both sides
08:00 Fri21:30 ThuOff-hours both sides
09:00 Fri22:30 ThuIST working
10:00 Fri23:30 ThuIST working
11:00 Fri00:30 FriIST working
12:00 Fri01:30 FriIST working
13:00 Fri02:30 FriIST working
14:00 Fri03:30 FriIST working
15:00 Fri04:30 FriIST working
16:00 Fri05:30 FriIST working
17:00 Fri06:30 FriOff-hours both sides
18:00 Fri07:30 FriOff-hours both sides
19:00 Fri08:30 FriOff-hours both sides
20:00 Fri09:30 FriCDT working
21:00 Fri10:30 FriCDT working
22:00 Fri11:30 FriCDT working
23:00 Fri12:30 FriCDT working

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

India Standard Time (IST)
IANA identifier
Asia/Kolkata
Current UTC offset
UTC+05:30
Current abbreviation
GMT+5:30
Major cities in this zone
MumbaiNew DelhiBangaloreChennaiKolkata
Central Daylight Time (CDT)
IANA identifier
America/Chicago
Current UTC offset
UTC-05:00
Current abbreviation
CDT
Major cities in this zone
ChicagoHoustonDallasAustinNew Orleans

Sun today in Mumbai and Chicago

Mumbai
Sunrise
06:05
Sunset
19:06
Solar noon
12:36
Daylight
13h 1m
Chicago
Sunrise
05:31
Sunset
20:04
Solar noon
12:48
Daylight
14h 32m

Related converters

CDT to IST (reverse)IST to ESTIST to PSTIST to GMTIST to UTCIST to CETEST to CDTPST to CDTGMT to CDTUTC to CDTCET to CDT
Looking for local time? See time in Mumbai or time in Chicago.

Frequently asked questions

What is the time difference between IST and CDT right now?+
CDT (Central Daylight Time) is currently 10h 30m behind IST (India Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does IST or CDT observe daylight saving time?+
IST: does not observe daylight saving time. CDT: observes daylight saving time.
When is the best time to schedule a meeting between IST and CDT?+
IST and CDT have no business-hour overlap, even at the edges of a typical workday. Async collaboration or non-9-5 scheduling is the practical choice.
What time is it in Chicago when it is 12:00 noon in Mumbai?+
When it is 12:00 Fri in Mumbai (IST), it is 01:30 Fri in Chicago (CDT).
Which IANA time zone identifiers are used for IST and CDT?+
IST maps to "Asia/Kolkata" in the IANA database. CDT maps to "America/Chicago". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Mumbai ahead of or behind Chicago?+
Whether Mumbai (IST) is ahead of or behind Chicago (CDT) depends on the current UTC offsets. Right now CDT is 10h 30m behind IST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for IST and CDT?+
IST is UTC+05:30 (GMT+5:30) and CDT is UTC-05:00 (CDT). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both IST and CDT?+
No standard business-hours overlap exists between IST and CDT. Plan asynchronous work or schedule outside 9-5 on at least one side.