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 AEST

+6h 30m

Tehran

IRSTSOURCE

Iran · UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

AEST

UTC+10:00DST observed

HH06

MM30

18:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Tehran

AEST

12:00 AM

6:30 AM

2:00 AM

8:30 AM

4:00 AM

10:30 AM

6:00 AM

12:30 PM

8:00 AM

2:30 PM

10:00 AM

4:30 PM

12:00 PM

6:30 PM

2:00 PM

8:30 PM

4:00 PM

10:30 PM

6:00 PM

12:30 AM+1

8:00 PM

2:30 AM+1

10:00 PM

4:30 AM+1

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

IRST and AEST on the World Map

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

IRST Zone

→

AEST 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

AEST – Australian Eastern Standard Time

UTC+10:00

Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.

Countries in AEST

Australia (NSW, VIC, QLD, TAS, ACT)Papua New Guinea

Major Cities in AEST

SydneyMelbourneBrisbaneCanberraHobartGold Coast

Key Facts about AEST

•Queensland does not observe daylight saving time, staying on AEST year-round.
•Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
•The Australian Securities Exchange (ASX) operates on AEST/AEDT.
•AEST is 15 hours ahead of EST during winter.

Daylight Saving:Yes – switches to AEDT

Learn more about AEST 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 →

Comparing Time Zones: Tehran and AEST

Tehran runs on Iran Standard Time (IRST) at UTC+03:30. AEST runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Tehran 6 hours 30 minutes ahead of AEST — a difference of +6h 30m at the current offsets.

In practice, when it is 9:00 AM in Tehran it is 3:30 PM in AEST. Midnight in Tehran is 6:30 AM in AEST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Tehran to AEST time conversion table

Tehran (IRST)	AEST (AEST)	Day
12:00 AM	6:30 AM	same day
6:00 AM	12:30 PM	same day
7:00 AM	1:30 PM	same day
8:00 AM	2:30 PM	same day
9:00 AM	3:30 PM	same day
12:00 PM	6:30 PM	same day
3:00 PM	9:30 PM	same day
5:00 PM	11:30 PM	same day
6:00 PM	12:30 AM	next day
9:00 PM	3:30 AM	next day

Why people convert Tehran to AEST time

Scheduling a call from Tehran to AEST: a 10:00 AM start in Tehran lands at 4:30 PM in AEST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Tehran and AEST are inside the 9-to-5 working day between 9:00 AM and 10:30 AM IRST time (3:30 PM–5:00 PM AEST). That is roughly 1 hours 30 minutes of usable overlap.
Watching a live event or market open: Tehran viewers need 3:30 PM in AEST to catch a 9:00 AM start there, and 5:30 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 +6h 30m gap is not.
Block 9:00 AM–10:30 AM IRST as the recurring meeting window if you work primarily from Tehran and need AEST 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 AEST (Australian Eastern Standard Time)

Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.

Best time to call between Tehran and AEST

Both Tehran and AEST sit inside the 9 AM – 5 PM working day between 9:00 AM–10:30 AM IRST, which is 3:30 PM–5:00 PM AEST. That gives roughly 1 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Tehran and AEST overlap for only 90 minutes (9:00 AM–10:30 AM IRST), so meetings have to be booked precisely.

Tehran is 6 hours 30 minutes ahead of AEST (IRST UTC+03:30 → AEST UTC+10:00). The shared working window is 9:00 AM–10:30 AM IRST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Tehran

Does not observe DST

AEST

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

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 AEST?

Tehran (IRST, UTC+03:30) is 6 hours 30 minutes ahead of AEST (AEST, UTC+10:00). The gap is currently +6h 30m.

How do I convert Tehran time to AEST time?

Add +6h 30m to Tehran local time. For example, 9:00 AM in Tehran is 3:30 PM in AEST.

What time is it in AEST right now?

AEST uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +6h 30m offset from Tehran.

What is the best time to call AEST from Tehran?

Call between 9:00 AM and 10:30 AM IRST — that maps to 3:30 PM–5:00 PM AEST and keeps both parties inside the working day.

Which is ahead, Tehran or AEST?

Tehran is 6 hours 30 minutes ahead of AEST. When it is 12:00 PM in Tehran it is 6:30 PM in AEST.

Do Tehran and AEST use different time zones?

Tehran (Iran) uses IRST at UTC+03:30, while AEST uses AEST at UTC+10:00. The IANA identifiers are Asia/Tehran and Australia/Sydney.

Does daylight saving time affect the Tehran–AEST difference?

Neither zone observes daylight saving time, so the +6h 30m offset between Tehran and AEST 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 AEST?

Not normally. The +6h 30m gap only pushes the date over for late-evening times.

What is the time difference between Tehran and AEST?

AEST is +6h 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.