Use the interactive converter above to visually compare hours side-by-side.

Kolkata

IST (GMT+5:30)

No Daylight Saving Time

Wellington

NZST (GMT+12)

NZDT starts on Sep 26, 2026

What is the best time to schedule a meeting between Kolkata and Wellington?

The best meeting window is during the 1.5 hours of overlapping business hours (see recommended slots above). Use the interactive converter on this page to explore additional time slots.

How many hours apart are Kolkata and Wellington?

Wellington is 6.5 hours ahead of Kolkata.

Does the overlap change with daylight saving time?

Wellington observes daylight saving time (NZDT starts on Sep 27, 2026) but Kolkata does not, so the overlap may shift by an hour seasonally. The interactive converter on this page always reflects the current offset, even across daylight saving transition.