Any time during the workday works for both.
Because Mumbai and Kolkata are in one timezone, you never have to ask "what time is it there?" — it's the same time it is for you.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mumbai Asia/Kolkata | ||||||||||||||||||||||||
Kolkata Asia/Kolkata |
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