Convert IST to CT
India Standard Time (IST) to Central Time (CT)
When it's 12:00 PM in Mumbai, it's 1:30 AM in Chicago
On Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: 12:30 AM in Chicago.
Interactive Converter
Pick any time and date to convert between IST and CT.
IST to CT Conversion Table
Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.
| Mumbai (IST) | Chicago (CT) |
|---|---|
| 12:00 AM | 1:30 PM -1 day |
| 1:00 AM | 2:30 PM -1 day |
| 2:00 AM | 3:30 PM -1 day |
| 3:00 AM | 4:30 PM -1 day |
| 4:00 AM | 5:30 PM -1 day |
| 5:00 AM | 6:30 PM -1 day |
| 6:00 AM | 7:30 PM -1 day |
| 7:00 AM | 8:30 PM -1 day |
| 8:00 AM | 9:30 PM -1 day |
| 9:00 AM | 10:30 PM -1 day |
| 10:00 AM | 11:30 PM -1 day |
| 11:00 AM | 12:30 AM |
| 12:00 PM | 1:30 AM |
| 1:00 PM | 2:30 AM |
| 2:00 PM | 3:30 AM |
| 3:00 PM | 4:30 AM |
| 4:00 PM | 5:30 AM |
| 5:00 PM | 6:30 AM |
| 6:00 PM | 7:30 AM |
| 7:00 PM | 8:30 AM |
| 8:00 PM | 9:30 AM |
| 9:00 PM | 10:30 AM |
| 10:00 PM | 11:30 AM |
| 11:00 PM | 12:30 PM |
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: Chicago times are 1 hour earlier.
Best Meeting Window
Top meeting times for teams in IST and CT (9 AM -- 6 PM work hours, 1-hour meeting).
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for Mumbai.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for Mumbai.
1 of 2 members within working hours. 1 in mid-day range (9 AM–5 PM). Outside work hours for Chicago.
These times apply on all dates in 2026–2027 except:
- Jan 1 – Mar 7, 2026; Nov 1, 2026 – Mar 13, 2027; Nov 7 – Dec 31, 2027: Chicago times are 1 hour earlier.
Time Difference & DST
The IST to CT gap is -11:30h or -10:30h, depending on daylight saving time. The table lists each period.
| Dates | Mumbai | Chicago | Difference |
|---|---|---|---|
| Jan 1 – Mar 7, 2026 | UTC+5:30 | UTC-6 | -11:30h |
| Mar 8 – Oct 31, 2026 | UTC+5:30 | UTC-5 | -10:30h |
| Nov 1, 2026 – Mar 13, 2027 | UTC+5:30 | UTC-6 | -11:30h |
| Mar 14 – Nov 6, 2027 | UTC+5:30 | UTC-5 | -10:30h |
| Nov 7 – Dec 31, 2027 | UTC+5:30 | UTC-6 | -11:30h |
Mumbai does not use daylight saving time.
Use the interactive converter for a specific date.
Major Cities
India Standard Time (IST)
- Mumbai
- Delhi
- Bangalore
Central Time (CT)
- Chicago
- Dallas
- Houston
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