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.

AEST to IRST

-6h 30m

AEST

AESTSOURCE

UTC+10:00DST observed

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

IRST

UTC+03:30

HH05

MM30

05:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

AEST

IRST

12:00 AM

5:30 PM-1

2:00 AM

7:30 PM-1

4:00 AM

9:30 PM-1

6:00 AM

11:30 PM-1

8:00 AM

1:30 AM

10:00 AM

3:30 AM

12:00 PM

5:30 AM

2:00 PM

7:30 AM

4:00 PM

9:30 AM

6:00 PM

11:30 AM

8:00 PM

1:30 PM

10:00 PM

3:30 PM

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

AEST and IRST on the World Map

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

AEST Zone

→

IRST Zone

Explore all world timezones interactively →

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

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 to IRST Time Difference – Complete Guide

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

In practice, when it is 9:00 AM in AEST it is 2:30 AM in IRST. Midnight in AEST is 5:30 PM in IRST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

AEST to IRST time conversion table

AEST (AEST)	IRST (IRST)	Day
12:00 AM	5:30 PM	previous day
6:00 AM	11:30 PM	previous day
7:00 AM	12:30 AM	same day
8:00 AM	1:30 AM	same day
9:00 AM	2:30 AM	same day
12:00 PM	5:30 AM	same day
3:00 PM	8:30 AM	same day
5:00 PM	10:30 AM	same day
6:00 PM	11:30 AM	same day
9:00 PM	2:30 PM	same day

Why people convert AEST to IRST time

Scheduling a call from AEST to IRST: a 10:00 AM start in AEST lands at 3:30 AM in IRST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both AEST and IRST are inside the 9-to-5 working day between 3:30 PM and 5:00 PM AEST time (9:00 AM–10:30 AM IRST). That is roughly 1 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking IRST local time against AEST keeps pickup windows and arrival estimates honest across the -6h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -6h 30m gap is not.
Block 3:30 PM–5:00 PM AEST as the recurring meeting window if you work primarily from AEST and need IRST colleagues present.

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.

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 AEST and IRST

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

Business hours overlap

AEST and IRST overlap for only 90 minutes (3:30 PM–5:00 PM AEST), so meetings have to be booked precisely.

AEST is 6 hours 30 minutes behind IRST (AEST UTC+10:00 → IRST UTC+03:30). The shared working window is 3:30 PM–5:00 PM AEST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

AEST

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

IRST

Does not observe DST

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 AEST and IRST?

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

How do I convert AEST time to IRST time?

Add -6h 30m to AEST local time. For example, 9:00 AM in AEST is 2:30 AM in IRST.

What time is it in IRST right now?

IRST 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 -6h 30m offset from AEST.