IST to CST Time Converter
Compare IST and CST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both India and Chicago.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| IST (India) | CST (Chicago) |
|---|---|
| 12:00 AM | 01:30 PM(Fri, Jul 24) |
| 01:00 AM | 02:30 PM(Fri, Jul 24) |
| 02:00 AM | 03:30 PM(Fri, Jul 24) |
| 03:00 AM | 04:30 PM(Fri, Jul 24) |
| 04:00 AM | 05:30 PM(Fri, Jul 24) |
| 05:00 AM | 06:30 PM(Fri, Jul 24) |
| 06:00 AM | 07:30 PM(Fri, Jul 24) |
| 07:00 AM | 08:30 PM(Fri, Jul 24) |
| 08:00 AM | 09:30 PM(Fri, Jul 24) |
| 09:00 AM | 10:30 PM(Fri, Jul 24) |
| 10:00 AM | 11:30 PM(Fri, Jul 24) |
| 11:00 AM | 12:30 AM |
| 12:00 PM | 01:30 AM |
| 01:00 PM | 02:30 AM |
| 02:00 PM | 03:30 AM |
| 03:00 PM | 04:30 AM |
| 04:00 PM | 05:30 AM |
| 05:00 PM | 06:30 AM |
| 06:00 PM | 07:30 AM |
| 07:00 PM | 08:30 AM |
| 08:00 PM | 09:30 AM |
| 09:00 PM | 10:30 AM |
| 10:00 PM | 11:30 AM |
| 11:00 PM | 12:30 PM |
Daylight saving time
Chicago observes daylight saving time; India does not. Expect a one-hour swing when Chicago starts or ends DST.
Working-hours overlap
Standard 9-to-5 hours in India and Chicago do not overlap. Use an early or late slot on one side.
Frequently asked questions
What is the time difference between IST and CST?+
CST (UTC-05:00) is currently 10 hours 30 minutes behind IST (UTC+05:30). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does IST or CST observe daylight saving time?+
Chicago observes daylight saving time; India does not, so the gap changes when Chicago springs forward or falls back. Times on this page always reflect the current local rules.
What are the best meeting hours between India and Chicago?+
Standard 9–5 working hours in India and Chicago do not overlap. Pick an early or late slot for one side, or use the 24-hour table above to find a time that works.
How do I quickly convert IST to CST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the IST row to see the matching CST time. The Event Planner also lets you pick a specific date and share it with attendees.