Best overlap: 8:00 AM to 3:00 PM in Copenhagen is 11:30 AM to 6:30 PM in Kolkata.
If you set up a recurring sync, 8:00 AM to 3:00 PM in Copenhagen (11:30 AM to 6:30 PM in Kolkata) is the natural home for it. Kolkata is 3.5 hours ahead of Copenhagen, but you still share a generous 7 hours of overlap, so scheduling is easy and there's room to move a meeting when you need to. Remember that Copenhagen shifts for daylight saving and Kolkata doesn't, so recalculate the overlap after each clock change.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Copenhagen Europe/Copenhagen | ||||||||||||||||||||||||
Kolkata Asia/Kolkata |
A complete guide to time zones in 2025, from UTC and GMT differences to Daylight Saving Time changes, IANA database rules, abbreviation pitfalls, and developer best practices for handling global time. -