CST to IST
On Oct 23, 2026, India Standard Time is 10 hours 30 minutes ahead of Central Time: 9:00 AM CDT is 7:30 PM IST. The gap changes during the year because of daylight saving time; the dates are below.
IST vs CST over the next 12 months
| Period | IST is | Example |
|---|---|---|
| Oct 23, 2026 to Nov 1, 2026 | 10 hours 30 minutes ahead | 9:00 AM CDT = 7:30 PM IST |
| Nov 1, 2026 to Mar 14, 2027 | 11 hours 30 minutes ahead | 9:00 AM CST = 8:30 PM IST |
| Mar 14, 2027 onwards | 10 hours 30 minutes ahead | 9:00 AM CDT = 7:30 PM IST |
CST to IST conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Central Time | India Standard Time |
|---|---|
| 12:00 AM | 10:30 AM |
| 1:00 AM | 11:30 AM |
| 2:00 AM | 12:30 PM |
| 3:00 AM | 1:30 PM |
| 4:00 AM | 2:30 PM |
| 5:00 AM | 3:30 PM |
| 6:00 AM | 4:30 PM |
| 7:00 AM | 5:30 PM |
| 8:00 AM | 6:30 PM |
| 9:00 AM | 7:30 PM |
| 10:00 AM | 8:30 PM |
| 11:00 AM | 9:30 PM |
| 12:00 PM | 10:30 PM |
| 1:00 PM | 11:30 PM |
| 2:00 PM | 12:30 AM (next day) |
| 3:00 PM | 1:30 AM (next day) |
| 4:00 PM | 2:30 AM (next day) |
| 5:00 PM | 3:30 AM (next day) |
| 6:00 PM | 4:30 AM (next day) |
| 7:00 PM | 5:30 AM (next day) |
| 8:00 PM | 6:30 AM (next day) |
| 9:00 PM | 7:30 AM (next day) |
| 10:00 PM | 8:30 AM (next day) |
| 11:00 PM | 9:30 AM (next day) |
Best time for a meeting
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour 30 minutes on a weekday: 8:00 AM–9:30 AM CDT, which is 6:30 PM–8:00 PM IST.
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Daylight saving time
Central Time (CST/CDT)
- Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−5 → UTC−6)
- Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−6 → UTC−5)
Where these clocks are used
- Central Time (CST/CDT): Chicago, Dallas, Houston, Winnipeg. IANA zone
America/Chicago. - India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone
Asia/Kolkata.
Questions
What time is it in IST when it is 9 AM CST?
On Oct 23, 2026, 9:00 AM CDT is 7:30 PM IST. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.
How many hours ahead of CST is IST?
It depends on the date. Oct 23, 2026 to Nov 1, 2026: IST is 10 hours 30 minutes ahead. Nov 1, 2026 to Mar 14, 2027: IST is 11 hours 30 minutes ahead. Mar 14, 2027 onwards: IST is 10 hours 30 minutes ahead.
Do CST and IST observe daylight saving time?
Central Time switches to CDT (UTC−5) in summer and back to CST (UTC−6) in winter. India Standard Time stays on UTC+5:30 all year.
What is the best time for a meeting between CST and IST?
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour 30 minutes on a weekday: 8:00 AM–9:30 AM CDT, which is 6:30 PM–8:00 PM IST.
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Related conversions
- IST to CST (reverse)
- EST to IST
- CST to EST
- CST to MST
- CST to PST
- CST to UTC
- CST to GMT
- CST to CET
- CST to SGT
- CST to JST
- CST to AEST
- MST to IST
- All time zones
Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.