Best overlap: 1:00 PM to 6:00 PM in Kolkata is 8:30 AM to 1:30 PM in Hamburg.
Shoot for 1:00 PM to 6:00 PM in Kolkata; your Hamburg colleagues will see that as 8:30 AM to 1:30 PM. With 5 hours to play with, a mid-window meeting keeps things balanced for Kolkata and Hamburg alike. Daylight saving complicates things slightly: Hamburg observes it, Kolkata doesn't, so the difference flexes by an hour part of the year.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Kolkata Asia/Kolkata | ||||||||||||||||||||||||
Hamburg Europe/Berlin |
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. -