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 Perth

+4h 30m

Tehran

IRSTSOURCE

Iran · UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Perth

AWST

Australia · UTC+08:00

HH04

MM30

16:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Tehran

Perth

12:00 AM

4:30 AM

2:00 AM

6:30 AM

4:00 AM

8:30 AM

6:00 AM

10:30 AM

8:00 AM

12:30 PM

10:00 AM

2:30 PM

12:00 PM

4:30 PM

2:00 PM

6:30 PM

4:00 PM

8:30 PM

6:00 PM

10:30 PM

8:00 PM

12:30 AM+1

10:00 PM

2:30 AM+1

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

IRST and AWST on the World Map

The map below highlights the IRST (Iran Standard Time) and AWST (Australian Western Standard Time) timezone regions across the globe.

IRST Zone

→

AWST 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

AWST – Australian Western Standard Time

UTC+08:00

Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.

Countries in AWST

Australia (Western Australia)

Major Cities in AWST

PerthMandurahBunburyGeraldton

Key Facts about AWST

•Western Australia does not observe daylight saving time.
•Perth is the most isolated major city in the world.
•AWST is the same offset as China Standard Time and Singapore Time.

Daylight Saving:No – UTC+08:00 year-round

Learn more about AWST 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 Perth

Wikipedia

Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.

Population:2.1 million

Metro:2.2 million

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

Currency:AUD (A$)

Stock Exchange:ASX (via Sydney)

Key Landmarks

Kings ParkPerth MintElizabeth QuayCottesloe BeachFremantle Prison

Did You Know?

Western Australia does not observe daylight saving time.

Learn more about AWST timezone →

Tehran to Perth Time Difference – Complete Guide

Tehran runs on Iran Standard Time (IRST) at UTC+03:30. Perth runs on Australian Western Standard Time (AWST) at UTC+08:00. That puts Tehran 4 hours 30 minutes ahead of Perth — a difference of +4h 30m at the current offsets.

In practice, when it is 9:00 AM in Tehran it is 1:30 PM in Perth. Midnight in Tehran is 4:30 AM in Perth. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Tehran to Perth time conversion table

Tehran (IRST)	Perth (AWST)	Day
12:00 AM	4:30 AM	same day
6:00 AM	10:30 AM	same day
7:00 AM	11:30 AM	same day
8:00 AM	12:30 PM	same day
9:00 AM	1:30 PM	same day
12:00 PM	4:30 PM	same day
3:00 PM	7:30 PM	same day
5:00 PM	9:30 PM	same day
6:00 PM	10:30 PM	same day
9:00 PM	1:30 AM	next day

Why people convert Tehran to Perth time

Scheduling a call from Tehran to Perth: a 10:00 AM start in Tehran lands at 2:30 PM in Perth, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Tehran and Perth are inside the 9-to-5 working day between 9:00 AM and 12:30 PM IRST time (1:30 PM–5:00 PM AWST). That is roughly 3 hours 30 minutes of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Tehran is 12:30 AM in Perth makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +4h 30m gap is not.
Block 9:00 AM–12:30 PM IRST as the recurring meeting window if you work primarily from Tehran and need Perth colleagues present.

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 AWST (Australian Western Standard Time)

Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city in the world.

Best time to call between Tehran and Perth

Both Tehran and Perth sit inside the 9 AM – 5 PM working day between 9:00 AM–12:30 PM IRST, which is 1:30 PM–5:00 PM AWST. That gives roughly 3 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Tehran and Perth overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Tehran is 4 hours 30 minutes ahead of Perth (IRST UTC+03:30 → AWST UTC+08:00). The shared working window is 9:00 AM–12:30 PM IRST. Remember to re-check around daylight-saving transitions.

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 Perth?

Tehran (IRST, UTC+03:30) is 4 hours 30 minutes ahead of Perth (AWST, UTC+08:00). The gap is currently +4h 30m.

How do I convert Tehran time to Perth time?

Add +4h 30m to Tehran local time. For example, 9:00 AM in Tehran is 1:30 PM in Perth.

What time is it in Perth right now?

Perth uses AWST at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h 30m offset from Tehran.

What is the best time to call Perth from Tehran?

Call between 9:00 AM and 12:30 PM IRST — that maps to 1:30 PM–5:00 PM AWST and keeps both parties inside the working day.

Which is ahead, Tehran or Perth?

Tehran is 4 hours 30 minutes ahead of Perth. When it is 12:00 PM in Tehran it is 4:30 PM in Perth.

Do Tehran and Perth use different time zones?

Tehran (Iran) uses IRST at UTC+03:30, while Perth (Australia) uses AWST at UTC+08:00. The IANA identifiers are Asia/Tehran and Australia/Perth.

Does daylight saving time affect the Tehran–Perth difference?

Neither zone observes daylight saving time, so the +4h 30m offset between Tehran and Perth is fixed all year.

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 Perth?

Not normally. The +4h 30m gap only pushes the date over for late-evening times.

What is the time difference between Tehran and Perth?

Perth is +4h 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 Perth in?

Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian 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 Perth?

Standard business hours in Perth are 9:00 AM - 5:00 PM AWST.

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

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

What currencies are used in Tehran and Perth?

Tehran uses IRR (﷼) while Perth uses AUD (A$). Check current exchange rates when planning travel or business between these cities.

How do Tehran and Perth compare in size?

Tehran has a population of approximately 9.4 million (metro: 16.8 million), while Perth has approximately 2.1 million (metro: 2.2 million).

What are the major landmarks in Tehran and Perth?

Tehran is known for Azadi Tower, Golestan Palace, Grand Bazaar. Perth is famous for Kings Park, Perth Mint, Elizabeth Quay.

Do Tehran and Perth have stock exchanges?

Yes. Tehran has the TSE (Tehran Stock Exchange) and Perth has the ASX (via Sydney). The +4h 30m time difference affects trading hour overlaps between these exchanges.