Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Tehran to Auckland

+9h 30m

Tehran

IRSTSOURCE

Iran · 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

Tehran

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 Tehran

Wikipedia

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

Population:9.4 million

Metro:16.8 million

Business Hours:8:00 AM - 4:00 PM IRST

Currency:IRR (﷼)

Stock Exchange:TSE (Tehran Stock Exchange)

Key Landmarks

Azadi TowerGolestan PalaceGrand BazaarMilad TowerTabiat Bridge

Did You Know?

Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).

Learn more about IRST timezone →

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 →

Everything You Need to Know About Tehran and Auckland Time

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

Tehran to Auckland time conversion table

Tehran (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 Tehran to Auckland time

Scheduling a call from Tehran to Auckland: a 10:00 AM start in Tehran lands at 7:30 PM in Auckland, so you can confirm the slot without doing the arithmetic yourself.
Handling a +9h 30m gap: Tehran 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 Tehran.
Watching a live event or market open: Tehran viewers need 6:30 PM in Auckland to catch a 9:00 AM start there, and 2:30 PM if the event is anchored to Tehran.

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 Tehran 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 Tehran 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 Tehran, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

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

Tehran 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

Tehran

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 Tehran and Auckland?

Tehran (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 Tehran time to Auckland time?

Add +9h 30m to Tehran local time. For example, 9:00 AM in Tehran 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 Tehran.

What is the best time to call Auckland from Tehran?

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

Which is ahead, Tehran or Auckland?

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

Do Tehran and Auckland use different time zones?

Tehran (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 Tehran–Auckland difference?

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

Which other cities share Tehran's time zone?

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

Which countries use IRST, Tehran's zone?

IRST is used in Iran.

Is there a day difference between Tehran and Auckland?

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

What is the time difference between Tehran and Auckland?

Auckland is +9h 30m from Tehran.

What timezone is Tehran in?

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

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.

What are the business hours in Tehran?

Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.

What are the business hours in Auckland?

Standard business hours in Auckland are 9:00 AM - 5:00 PM NZST.

What is the best time to schedule a call between Tehran and Auckland?

The best overlap for a call is when both cities are in business hours. Tehran works 8:00 AM - 4:00 PM IRST and Auckland works 9:00 AM - 5:00 PM NZST (+9h 30m difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Tehran and Auckland?

Tehran uses IRR (﷼) while Auckland uses NZD (NZ$). Check current exchange rates when planning travel or business between these cities.

How do Tehran and Auckland compare in size?

Tehran has a population of approximately 9.4 million (metro: 16.8 million), while Auckland has approximately 1.7 million (metro: 1.7 million).

What are the major landmarks in Tehran and Auckland?

Tehran is known for Azadi Tower, Golestan Palace, Grand Bazaar. Auckland is famous for Sky Tower, Auckland Harbour Bridge, Auckland War Memorial Museum.

Do Tehran and Auckland have stock exchanges?

Yes. Tehran has the TSE (Tehran Stock Exchange) and Auckland has the NZX (New Zealand Exchange). The +9h 30m time difference affects trading hour overlaps between these exchanges.