IST to CST: India–US Central time difference and best meeting times
Bengaluru (Bangalore) to Chicago time · IST to CST/CDT
Bengaluru and Chicago share no 9-to-5 working hours for most of the year. The fairest 1-hour meeting is 17:30 in Bengaluru = 07:00 in Chicago.
Chicago and the US Central time zone sit between the coasts. Indian teams get a slightly easier evening slot than with San Francisco.
Time difference
Chicago is 10h 30m behind Bengaluru
Most of the year; see below for other dates.
Shared working hours
None
Standard 09:00–17:00 days don't meet.
Fairest 1-hour meeting
17:30 in Bengaluru = 07:00 in Chicago
Bengaluru stretches 1h 30m, Chicago stretches 2h.
How the gap changes in 2027
- 14 Mar – 6 Nov (238 days): Chicago is 10h 30m behind Bengaluru. No shared standard hours; fairest meeting 17:30 in Bengaluru = 07:00 in Chicago.
- 1 Jan – 13 Mar, 7 Nov – 31 Dec (127 days): Chicago is 11h 30m behind Bengaluru. No shared standard hours; fairest meeting 18:00 in Bengaluru = 06:30 in Chicago.
- Bengaluru:
- UTC+5:30 all year (no daylight saving)
- Chicago:
- UTC−6 standard, UTC−5 daylight saving
- 14 Mar: Chicago clocks go forward 1h
- 7 Nov: Chicago clocks go back 1h
Hour-by-hour: Bengaluru to Chicago
Working hours are 09:00–17:00; night is 23:00–07:00.
| Bengaluru | Chicago14 Mar – 6 Nov | Chicago1 Jan – 13 Mar, 7 Nov – 31 Dec |
|---|---|---|
| 00:00 | 13:30 (previous day) | 12:30 (previous day) |
| 01:00 | 14:30 (previous day) | 13:30 (previous day) |
| 02:00 | 15:30 (previous day) | 14:30 (previous day) |
| 03:00 | 16:30 (previous day) | 15:30 (previous day) |
| 04:00 | 17:30 (previous day) | 16:30 (previous day) |
| 05:00 | 18:30 (previous day) | 17:30 (previous day) |
| 06:00 | 19:30 (previous day) | 18:30 (previous day) |
| 07:00 | 20:30 (previous day) | 19:30 (previous day) |
| 08:00 | 21:30 (previous day) | 20:30 (previous day) |
| 09:00 | 22:30 (previous day) | 21:30 (previous day) |
| 10:00 | 23:30 (previous day) | 22:30 (previous day) |
| 11:00 | 00:30 | 23:30 (previous day) |
| 12:00 | 01:30 | 00:30 |
| 13:00 | 02:30 | 01:30 |
| 14:00 | 03:30 | 02:30 |
| 15:00 | 04:30 | 03:30 |
| 16:00 | 05:30 | 04:30 |
| 17:00 | 06:30 | 05:30 |
| 18:00 | 07:30 | 06:30 |
| 19:00 | 08:30 | 07:30 |
| 20:00 | 09:30 | 08:30 |
| 21:00 | 10:30 | 09:30 |
| 22:00 | 11:30 | 10:30 |
| 23:00 | 12:30 | 11:30 |
Tips for India and US Central teams
- India doesn't use daylight saving time, so the gap moves by an hour whenever Chicago changes its clocks. Recurring meetings set in one place's time will shift for the other.
- With no shared standard hours, agree which side stretches its day, and rotate the inconvenient slot so it doesn't always fall on the same people.
- Keep live meetings for decisions that need discussion; use written handoffs at the end of each day for everything else.
Based on 09:00–17:00 working days in Bengaluru and Chicago, using 2027 clock-change dates. Real schedules vary, so confirm with your team.