Offset
The time difference between New Zealand Time and Iran Standard Time is 8.5 hours.
New Zealand Time (NZST) is ahead of Iran Standard Time (IRST).
NZST: UTC+12
IRST: UTC+3:30
Neither New Zealand Time nor Iran Standard Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in New Zealand Time and Iran Standard Time don't overlap on the same weekday. Iran Standard Time is 8 hours behind New Zealand Time.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in New Zealand Time (7 AM–11 AM in Iran Standard Time) — suggest 6:00 PM New Zealand Time (9:30 AM Iran Standard 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
New Zealand Time is also known as NZST, or NZDT. To call New Zealand, dial +64.
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Iran Standard Time is approximately 9,350 miles west of New Zealand Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| NZST | IRST | Day |
|---|---|---|
| 12:00 am | 3:30 pm | -1 day |
| 1:00 am | 4:30 pm | -1 day |
| 2:00 am | 5:30 pm | -1 day |
| 3:00 am | 6:30 pm | -1 day |
| 4:00 am | 7:30 pm | -1 day |
| 5:00 am | 8:30 pm | -1 day |
| 6:00 am | 9:30 pm | -1 day |
| 7:00 am | 10:30 pm | -1 day |
| 8:00 am | 11:30 pm | -1 day |
| 9:00 am | 12:30 am | Same day |
| 10:00 am | 1:30 am | Same day |
| 11:00 am | 2:30 am | Same day |
| 12:00 pm | 3:30 am | Same day |
| 1:00 pm | 4:30 am | Same day |
| 2:00 pm | 5:30 am | Same day |
| 3:00 pm | 6:30 am | Same day |
| 4:00 pm | 7:30 am | Same day |
| 5:00 pm | 8:30 am | Same day |
| 6:00 pm | 9:30 am | Same day |
| 7:00 pm | 10:30 am | Same day |
| 8:00 pm | 11:30 am | Same day |
| 9:00 pm | 12:30 pm | Same day |
| 10:00 pm | 1:30 pm | Same day |
| 11:00 pm | 2:30 pm | Same 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
- 7:28 AM
- Sunset
- 5:13 PM
- Day length
- 9h 45m
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
Daylight overlap: 3h 53m — 1:20 PM–5:13 PM in New Zealand Time (4:50 AM–8:43 AM in Iran Standard 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 New Zealand Time
- AKL
- CHC
- WLG
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Related conversions
Common conversions
- What is 9:00 am NZST in IRST?
- 9:00 am NZST is 12:30 am IRST.
- What is 12:00 pm NZST in IRST?
- 12:00 pm NZST is 3:30 am IRST.
- What is 12:30 pm NZST in IRST?
- 12:30 pm NZST is 4:00 am IRST.
- What is 2:00 pm NZST in IRST?
- 2:00 pm NZST is 5:30 am IRST.
- What is 5:00 pm NZST in IRST?
- 5:00 pm NZST is 8:30 am IRST.
- What is 11:30 pm NZST in IRST?
- 11:30 pm NZST is 3:00 pm IRST.