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.

Perth to Tehran

-4h 30m

Perth

AWSTSOURCE

Australia · UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Tehran

IRST

Iran · UTC+03:30

HH07

MM30

07:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Perth

Tehran

12:00 AM

7:30 PM-1

2:00 AM

9:30 PM-1

4:00 AM

11:30 PM-1

6:00 AM

1:30 AM

8:00 AM

3:30 AM

10:00 AM

5:30 AM

12:00 PM

7:30 AM

2:00 PM

9:30 AM

4:00 PM

11:30 AM

6:00 PM

1:30 PM

8:00 PM

3:30 PM

10:00 PM

5:30 PM

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

AWST and IRST on the World Map

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

AWST Zone

→

IRST Zone

Explore all world timezones interactively →

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

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

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 →

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 →

Comparing Time Zones: Perth and Tehran

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

In practice, when it is 9:00 AM in Perth it is 4:30 AM in Tehran. Midnight in Perth is 7:30 PM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Perth to Tehran time conversion table

Perth (AWST)	Tehran (IRST)	Day
12:00 AM	7:30 PM	previous day
6:00 AM	1:30 AM	same day
7:00 AM	2:30 AM	same day
8:00 AM	3:30 AM	same day
9:00 AM	4:30 AM	same day
12:00 PM	7:30 AM	same day
3:00 PM	10:30 AM	same day
5:00 PM	12:30 PM	same day
6:00 PM	1:30 PM	same day
9:00 PM	4:30 PM	same day

Why people convert Perth to Tehran time

Scheduling a call from Perth to Tehran: a 10:00 AM start in Perth lands at 5:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Perth and Tehran are inside the 9-to-5 working day between 1:30 PM and 5:00 PM AWST time (9:00 AM–12:30 PM IRST). That is roughly 3 hours 30 minutes of usable overlap.
Watching a live event or market open: Perth viewers need 4:30 AM in Tehran to catch a 9:00 AM start there, and 4:30 AM if the event is anchored to Perth.

Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -4h 30m gap is not.
Block 1:30 PM–5:00 PM AWST as the recurring meeting window if you work primarily from Perth and need Tehran colleagues present.

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.

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.

Best time to call between Perth and Tehran

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

Business hours overlap

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

Perth is 4 hours 30 minutes behind Tehran (AWST UTC+08:00 → IRST UTC+03:30). The shared working window is 1:30 PM–5:00 PM AWST. 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 Perth and Tehran?

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

How do I convert Perth time to Tehran time?

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

What time is it in Tehran right now?

Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h 30m offset from Perth.

What is the best time to call Tehran from Perth?

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

Which is behind, Perth or Tehran?

Perth is 4 hours 30 minutes behind Tehran. When it is 12:00 PM in Perth it is 7:30 AM in Tehran.

Do Perth and Tehran use different time zones?

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

Does daylight saving time affect the Perth–Tehran difference?

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

Which other cities share Perth's time zone?

AWST also covers Perth, Mandurah, Bunbury, Geraldton.

Which countries use AWST, Perth's zone?

AWST is used in Australia (Western Australia).

Is there a day difference between Perth and Tehran?

Not normally. The -4h 30m gap only pushes the date over the previous day.

What is the time difference between Perth and Tehran?

Tehran is -4h 30m from Perth.

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 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 are the business hours in Perth?

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

What are the business hours in Tehran?

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

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

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

What currencies are used in Perth and Tehran?

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

How do Perth and Tehran compare in size?

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

What are the major landmarks in Perth and Tehran?

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

Do Perth and Tehran have stock exchanges?

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