Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Iran to Auckland

+9h 30m

Iran

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Auckland

NZDT

New Zealand · UTC+13:00☀ DST active

HH09

MM30

21:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Iran

Auckland

12:00 AM

9:30 AM

2:00 AM

11:30 AM

4:00 AM

1:30 PM

6:00 AM

3:30 PM

8:00 AM

5:30 PM

10:00 AM

7:30 PM

12:00 PM

9:30 PM

2:00 PM

11:30 PM

4:00 PM

1:30 AM+1

6:00 PM

3:30 AM+1

8:00 PM

5:30 AM+1

10:00 PM

7:30 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

IRST and NZDT on the World Map

The map below highlights the IRST (Iran Standard Time) and NZDT (New Zealand Standard Time) timezone regions across the globe.

IRST Zone

→

NZDT Zone

Explore all world timezones interactively →

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST on Wikipedia

NZST – New Zealand Standard Time

UTC+12:00

New Zealand Standard Time (NZST) is the time zone for New Zealand, 12 hours ahead of UTC.

Countries in NZST

New Zealand

Major Cities in NZST

AucklandWellingtonChristchurchHamiltonDunedin

Key Facts about NZST

•New Zealand is among the first major countries to see a new day.
•NZST is 17 hours ahead of EST.
•New Zealand observes DST from September to April (Southern Hemisphere summer).

Daylight Saving:Yes – switches to NZDT

Learn more about NZST on Wikipedia

About Auckland

Wikipedia

Auckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.

Population:1.7 million

Metro:1.7 million

Business Hours:9:00 AM - 5:00 PM NZST

Currency:NZD (NZ$)

Stock Exchange:NZX (New Zealand Exchange)

Key Landmarks

Sky TowerAuckland Harbour BridgeAuckland War Memorial MuseumWaiheke IslandRangitoto Island

Did You Know?

Auckland is the first major city to see the sunrise each day (along with cities further east).

Learn more about NZDT timezone →

Iran to Auckland Time Difference – Complete Guide

Iran runs on Iran Standard Time (IRST) at UTC+03:30. Auckland runs on New Zealand Daylight Time (NZDT) at UTC+13:00, also currently on daylight saving time. That puts Iran 9 hours 30 minutes ahead of Auckland — a difference of +9h 30m at the current offsets.

In practice, when it is 9:00 AM in Iran it is 6:30 PM in Auckland. Midnight in Iran is 9:30 AM in Auckland.Auckland observes daylight saving time while Iran does not, so the gap narrows or widens by an hour part of the year.

Iran to Auckland time conversion table

Iran (IRST)	Auckland (NZDT)	Day
12:00 AM	9:30 AM	same day
6:00 AM	3:30 PM	same day
7:00 AM	4:30 PM	same day
8:00 AM	5:30 PM	same day
9:00 AM	6:30 PM	same day
12:00 PM	9:30 PM	same day
3:00 PM	12:30 AM	next day
5:00 PM	2:30 AM	next day
6:00 PM	3:30 AM	next day
9:00 PM	6:30 AM	next day

Why people convert Iran to Auckland time

Scheduling a call from Iran to Auckland: a 10:00 AM start in Iran lands at 7:30 PM in Auckland, so you can confirm the slot without doing the arithmetic yourself.
Handling a +9h 30m gap: Iran and Auckland have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Auckland is 6:30 PM in Iran.
Coordinating a Iran-based team with Auckland contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +9h 30m gap is not.
With a +9h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Iran takes the early slot, the next week Auckland does.
Auckland: Clocks fall back on Sat, Apr 3, 2027. Any meeting series spanning that date will shift by an hour in local time.

About IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

About NZST (New Zealand Standard Time)

New Zealand Standard Time (NZST) is the standard time zone for New Zealand and its dependencies. New Zealand is among the first countries to see a new calendar day. During summer (September to April), clocks advance to New Zealand Daylight Time (NZDT, UTC+13:00).

Best time to call between Iran and Auckland

With a +9h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Auckland opens at 9:00 AM NZDT, which is 6:30 PM in Iran, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Iran and Auckland have no shared working hours because of the +9h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.

Iran is 9 hours 30 minutes ahead of Auckland (IRST UTC+03:30 → NZDT UTC+13:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Iran

Does not observe DST

Auckland

☀ Currently in DST

Standard: UTC+12:00 · DST: UTC+13:00

Clocks fall back on Sat, Apr 3, 2027

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Iran and Auckland?

Iran (IRST, UTC+03:30) is 9 hours 30 minutes ahead of Auckland (NZDT, UTC+13:00). The gap is currently +9h 30m.

How do I convert Iran time to Auckland time?

Add +9h 30m to Iran local time. For example, 9:00 AM in Iran is 6:30 PM in Auckland.

What time is it in Auckland right now?

Auckland uses NZDT at UTC+13:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +9h 30m offset from Iran.

What is the best time to call Auckland from Iran?

There is no shared working-hours window because of the +9h 30m gap. The closest option is 1:00 PM in Iran, which is 10:30 PM in Auckland.

Which is ahead, Iran or Auckland?

Iran is 9 hours 30 minutes ahead of Auckland. When it is 12:00 PM in Iran it is 9:30 PM in Auckland.

Do Iran and Auckland use different time zones?

Iran (Iran) uses IRST at UTC+03:30, while Auckland (New Zealand) uses NZDT at UTC+13:00. The IANA identifiers are Asia/Tehran and Pacific/Auckland.

Does daylight saving time affect the Iran–Auckland difference?

Yes at the moment: Auckland is on daylight saving time and Iran is not, so the +9h 30m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Iran's time zone?

IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.

Which countries use IRST, Iran's zone?

IRST is used in Iran.

Is there a day difference between Iran and Auckland?

Not normally. The +9h 30m gap only pushes the date over for late-evening times.

What is the time difference between Iran and Auckland?

Auckland is +9h 30m from Iran.

What timezone is Iran in?

Iran operates on its local timezone.

What timezone is Auckland in?

Auckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.