Offset
The time difference between Iran Standard Time and New Zealand Time is 8.5 hours.
Iran Standard Time (IRST) is behind New Zealand Time (NZST).
IRST: UTC+3:30
NZST: UTC+12
Neither Iran Standard Time nor New Zealand Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Iran Standard Time and New Zealand Time don't overlap on the same weekday. New Zealand Time is 9 hours ahead of Iran Standard Time.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–12 PM in Iran Standard Time (3 PM–8 PM in New Zealand Time) — suggest 9:00 AM Iran Standard Time (5:30 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.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
New Zealand
- New Year's DayThu, Jan 1
- Day after New Year's DayFri, Jan 2
- Waitangi DayFri, Feb 6
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Anzac DayMon, Apr 27
- King's BirthdayMon, Jun 1
- MatarikiFri, Jul 10
- Labour DayMon, Oct 26
- Christmas DayFri, Dec 25
- Boxing DayMon, Dec 28
About these zones
Iran Standard Time is also known as IRST. To call Iran, dial +98.
New Zealand Time is also known as NZST, or NZDT. To call New Zealand, dial +64.
New Zealand Time is approximately 9,350 miles east of Iran Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| IRST | NZST | Day |
|---|---|---|
| 12:00 am | 8:30 am | Same day |
| 1:00 am | 9:30 am | Same day |
| 2:00 am | 10:30 am | Same day |
| 3:00 am | 11:30 am | Same day |
| 4:00 am | 12:30 pm | Same day |
| 5:00 am | 1:30 pm | Same day |
| 6:00 am | 2:30 pm | Same day |
| 7:00 am | 3:30 pm | Same day |
| 8:00 am | 4:30 pm | Same day |
| 9:00 am | 5:30 pm | Same day |
| 10:00 am | 6:30 pm | Same day |
| 11:00 am | 7:30 pm | Same day |
| 12:00 pm | 8:30 pm | Same day |
| 1:00 pm | 9:30 pm | Same day |
| 2:00 pm | 10:30 pm | Same day |
| 3:00 pm | 11:30 pm | Same day |
| 4:00 pm | 12:30 am | +1 day |
| 5:00 pm | 1:30 am | +1 day |
| 6:00 pm | 2:30 am | +1 day |
| 7:00 pm | 3:30 am | +1 day |
| 8:00 pm | 4:30 am | +1 day |
| 9:00 pm | 5:30 am | +1 day |
| 10:00 pm | 6:30 am | +1 day |
| 11:00 pm | 7:30 am | +1 day |
Daylight saving time
New Zealand Time observes daylight saving time; Iran Standard Time does not. The offset between the two zones changes when New Zealand Time transitions: on Sunday, September 27, 2026, clocks spring forward from NZST to NZDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
- Sunrise
- 7:28 AM
- Sunset
- 5:13 PM
- Day length
- 9h 45m
Daylight overlap: 3h 53m — 4:50 AM–8:43 AM in Iran Standard Time (1:20 PM–5:13 PM in New Zealand Time). Both locations are in daylight during this window.
Cities in these zones
Cities in New Zealand Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Airports in New Zealand Time
- AKL
- CHC
- WLG
Related conversions
Common conversions
- What is 9:00 am IRST in NZST?
- 9:00 am IRST is 5:30 pm NZST.
- What is 12:00 pm IRST in NZST?
- 12:00 pm IRST is 8:30 pm NZST.
- What is 12:30 pm IRST in NZST?
- 12:30 pm IRST is 9:00 pm NZST.
- What is 2:00 pm IRST in NZST?
- 2:00 pm IRST is 10:30 pm NZST.
- What is 5:00 pm IRST in NZST?
- 5:00 pm IRST is 1:30 am NZST, the next day.
- What is 11:30 pm IRST in NZST?
- 11:30 pm IRST is 8:00 am NZST, the next day.