Time difference between Chicago and Mumbai
Chicago CDT · UTC-5 
Mumbai GMT+5:30 · UTC+5:30 Best time to call
Hours shown in Chicago time. The two working days never overlap: when Chicago is at its desk, Mumbai is asleep. Schedule at the edge of one side's day.
Hour-by-hour conversion
| Chicago (CDT) | Mumbai (GMT+5:30) | Call quality |
|---|---|---|
| 12:00 AM | 10:30 AM | Off hours |
| 1:00 AM | 11:30 AM | Off hours |
| 2:00 AM | 12:30 PM | Off hours |
| 3:00 AM | 1:30 PM | Off hours |
| 4:00 AM | 2:30 PM | Off hours |
| 5:00 AM | 3:30 PM | Off hours |
| 6:00 AM | 4:30 PM | Off hours |
| 7:00 AM | 5:30 PM | OK |
| 8:00 AM | 6:30 PM | OK |
| 9:00 AM | 7:30 PM | OK |
| 10:00 AM | 8:30 PM | OK |
| 11:00 AM | 9:30 PM | OK |
| 12:00 PM | 10:30 PM | Off hours |
| 1:00 PM | 11:30 PM | Off hours |
| 2:00 PM | 12:30 AM+1 day | Off hours |
| 3:00 PM | 1:30 AM+1 day | Off hours |
| 4:00 PM | 2:30 AM+1 day | Off hours |
| 5:00 PM | 3:30 AM+1 day | Off hours |
| 6:00 PM | 4:30 AM+1 day | Off hours |
| 7:00 PM | 5:30 AM+1 day | Off hours |
| 8:00 PM | 6:30 AM+1 day | Off hours |
| 9:00 PM | 7:30 AM+1 day | OK |
| 10:00 PM | 8:30 AM+1 day | Off hours |
| 11:00 PM | 9:30 AM+1 day | Off hours |
Daylight saving time note
Chicago and Mumbai do not change their clocks on the same date. Between November 1, 2026 and March 14, 2027 the difference is 11 hours and 30 minutes behind Mumbai — because Chicago changes its clocks for daylight saving time while Mumbai keeps the same time all year.
For the rest of the year the difference holds steady at 10 hours and 30 minutes. Every time on this page is computed from the IANA database at the moment you load it, so the tables above already account for whichever side has switched.
Why the time difference exists
The clock in Chicago is anchored to UTC-6 standard time; Mumbai works from UTC+5:30 standard time. Only Chicago shifts for daylight saving; Mumbai stays put, which nudges the difference by an hour twice a year. Mumbai sits roughly 13,000 km to the north of Chicago.
Expect roughly a 12 hours forward adjustment travelling from Chicago to Mumbai. The direct distance works out to roughly 16 hours in the air. Line up a shared window before you call and the rest is easy.
