Observatory log
Mumbai and Kolkata, compared
- 01Difference now
Mumbai and Kolkata have the same time.
Mumbai: IST (UTC+5:30) · Kolkata: IST (UTC+5:30)
- 02Through 2026–2027
The difference stays the same all year.
- 1 January 2026 – 31 December 2027Same time
Difference of Kolkata from Mumbai. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Mon–Fri: 09:00–17:00 in Mumbai = 09:00–17:00 in Kolkata · 8 h
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–17:00 in Mumbai = 09:00–17:00 in Kolkata
Inside both working days (Mon–Fri).
- 05Weekend
Mumbai: Saturday and Sunday
Kolkata: Saturday and Sunday
24 hours
A day in Mumbai, in Kolkata
| Mumbai | Kolkata | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 00:00 | |
| 01:00 | 01:00 | |
| 02:00 | 02:00 | |
| 03:00 | 03:00 | |
| 04:00 | 04:00 | |
| 05:00 | 05:00 | |
| 06:00 | 06:00 | |
| 07:00 | 07:00 | |
| 08:00 | 08:00 | |
| 09:00 | 09:00 | |
| 10:00 | 10:00 | |
| 11:00 | 11:00 | |
| 12:00 | 12:00 | |
| 13:00 | 13:00 | |
| 14:00 | 14:00 | |
| 15:00 | 15:00 | |
| 16:00 | 16:00 | |
| 17:00 | 17:00 | |
| 18:00 | 18:00 | |
| 19:00 | 19:00 | |
| 20:00 | 20:00 | |
| 21:00 | 21:00 | |
| 22:00 | 22:00 | |
| 23:00 | 23:00 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Mumbai and Kolkata
More time differences with Mumbai
Questions
Asked about Mumbai and Kolkata
What is the time difference between Mumbai and Kolkata?
Mumbai and Kolkata have the same time. The difference stays the same all year.
What is the best time for a call between Mumbai and Kolkata?
Inside both working days: Mon–Fri: 09:00–17:00 in Mumbai = 09:00–17:00 in Kolkata · 8 h.
When does the time difference between Mumbai and Kolkata change?
It does not change in the next 12 months: Mumbai and Kolkata either keep the same time all year or change their clocks on the same dates.