World Timezones

IRST to AEST Converter

Compare AEST to IRST instead
Iran Standard Time8:06 amFri, Jun 5
Iran Standard TimeIRST
Middle East · UTC+3:30
8:06 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Australian Eastern TimeAEST
Oceania · UTC+10
2:36 pmFri, Jun 5
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a

Offset

The time difference between Iran Standard Time and Australian Eastern Time is 6.5 hours.

6.5 hours

Iran Standard Time (IRST) is behind Australian Eastern Time (AEST).

IRST: UTC+3:30

AEST: UTC+10

Neither Iran Standard Time nor Australian Eastern Time is currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–11 AM in Iran Standard Time (3 PM–5 PM in Australian Eastern Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 10:00 AM Iran Standard Time (4:30 PM Australian Eastern Time).

This window may shift by an hour during daylight saving time.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

Australia

  • New Year's DayThu, Jan 1
  • Australia DayMon, Jan 26
  • Good FridayFri, Apr 3
  • Easter MondayMon, Apr 6
  • Christmas DayFri, Dec 25
  • St. Stephen's DayMon, Dec 28

About these zones

Iran Standard Time is also known as IRST. To call Iran, dial +98.

Australian Eastern Time is also known as AEST, or AEDT. To call Australia, dial +61.

Australian Eastern Time is approximately 8,000 miles southeast of Iran Standard Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

IRSTAESTDay
12:00 am6:30 amSame day
1:00 am7:30 amSame day
2:00 am8:30 amSame day
3:00 am9:30 amSame day
4:00 am10:30 amSame day
5:00 am11:30 amSame day
6:00 am12:30 pmSame day
7:00 am1:30 pmSame day
8:00 am2:30 pmSame day
9:00 am3:30 pmSame day
10:00 am4:30 pmSame day
11:00 am5:30 pmSame day
12:00 pm6:30 pmSame day
1:00 pm7:30 pmSame day
2:00 pm8:30 pmSame day
3:00 pm9:30 pmSame day
4:00 pm10:30 pmSame day
5:00 pm11:30 pmSame day
6:00 pm12:30 am+1 day
7:00 pm1:30 am+1 day
8:00 pm2:30 am+1 day
9:00 pm3:30 am+1 day
10:00 pm4:30 am+1 day
11:00 pm5:30 am+1 day

Daylight saving time

Australian Eastern Time observes daylight saving time; Iran Standard Time does not. The offset between the two zones changes when Australian Eastern Time transitions: on Sunday, October 4, 2026, clocks spring forward from AEST to AEDT.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m
Australian Eastern Time
Sunrise
6:54 AM
Sunset
4:54 PM
Day length
10h

Daylight overlap: 5h 35m — 4:50 AM–10:24 AM in Iran Standard Time (11:20 AM–4:54 PM in Australian Eastern Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Iran Standard Time

Cities in Australian Eastern Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Iran Standard Time

  • IKA
  • THR
  • MHD
  • IFN
  • PYK
  • TBZ

Airports in Australian Eastern Time

  • SYD
  • CBR

Related conversions

Common conversions

What is 9:00 am IRST in AEST?
9:00 am IRST is 3:30 pm AEST.
What is 12:00 pm IRST in AEST?
12:00 pm IRST is 6:30 pm AEST.
What is 12:30 pm IRST in AEST?
12:30 pm IRST is 7:00 pm AEST.
What is 2:00 pm IRST in AEST?
2:00 pm IRST is 8:30 pm AEST.
What is 5:00 pm IRST in AEST?
5:00 pm IRST is 11:30 pm AEST.
What is 11:30 pm IRST in AEST?
11:30 pm IRST is 6:00 am AEST, the next day.