GMT to NZST Converter

Standard business hours (9 AM–5 PM, Mon–Fri) in Greenwich Mean Time and New Zealand Time don't overlap on the same weekday. New Zealand Time is 11 hours ahead of Greenwich Mean Time.

With some flexibility, there’s a workable window outside standard hours:

• 7 AM–9 AM in Greenwich Mean Time (6 PM–8 PM in New Zealand Time) — suggest 8:00 AM Greenwich Mean Time (7:00 PM New Zealand Time).

This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.

Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.

New Zealand Time is also known as NZST, or NZDT. To call New Zealand, dial +64.

New Zealand Time is approximately 11,400 miles north of Greenwich Mean Time.

Both zones observe daylight saving time, but they transition on different dates.

Greenwich Mean Time: next transition on Sunday, October 25, 2026.

New Zealand Time: next transition on Sunday, September 27, 2026.

Greenwich Mean Time and New Zealand Time are in opposite hemispheres, so their clocks change in opposite directions about six months apart — one springs forward while the other falls back. The offset between them therefore shifts twice a year and can swing by up to two hours across the seasons, more than a typical same-hemisphere pair. Recurring meetings will need re-checking after each transition.

See the daylight saving time page for transition dates across every time zone.