Best overlap: 8:30 AM to 11:30 AM in Kolkata is 3:00 PM to 6:00 PM in Wellington.
The overlap falls at 8:30 AM to 11:30 AM in Kolkata, or 3:00 PM to 6:00 PM if you're in Wellington. You've got a decent 3-hour window. Set a recurring time near 8:30 AM in Kolkata (3:00 PM in Wellington) and stick to it. Just remember Wellington changes its clocks for daylight saving and Kolkata doesn't, so confirm the overlap whenever the seasons turn.
| 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 | ||||||||||||||||||||||||
Wellington Pacific/Auckland |
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. -