Offset
The time difference between Australian Eastern Time and Iran Standard Time is 6.5 hours.
Australian Eastern Time (AEST) is ahead of Iran Standard Time (IRST).
AEST: UTC+10
IRST: UTC+3:30
Neither Australian Eastern Time nor Iran Standard Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 4 PM–5 PM in Australian Eastern Time (9 AM–10 AM in Iran Standard Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Australian Eastern Time (9:30 AM Iran Standard 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
Australian Eastern Time is also known as AEST, or AEDT. To call Australia, dial +61.
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Iran Standard Time is approximately 8,000 miles northwest of Australian Eastern Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| AEST | IRST | Day |
|---|---|---|
| 12:00 am | 5:30 pm | -1 day |
| 1:00 am | 6:30 pm | -1 day |
| 2:00 am | 7:30 pm | -1 day |
| 3:00 am | 8:30 pm | -1 day |
| 4:00 am | 9:30 pm | -1 day |
| 5:00 am | 10:30 pm | -1 day |
| 6:00 am | 11:30 pm | -1 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 |
| 10:00 am | 3:30 am | Same day |
| 11:00 am | 4:30 am | Same day |
| 12:00 pm | 5:30 am | Same day |
| 1:00 pm | 6:30 am | Same day |
| 2:00 pm | 7:30 am | Same day |
| 3:00 pm | 8:30 am | Same day |
| 4:00 pm | 9:30 am | Same day |
| 5:00 pm | 10:30 am | Same day |
| 6:00 pm | 11:30 am | Same day |
| 7:00 pm | 12:30 pm | Same day |
| 8:00 pm | 1:30 pm | Same day |
| 9:00 pm | 2:30 pm | Same day |
| 10:00 pm | 3:30 pm | Same day |
| 11:00 pm | 4:30 pm | Same 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
- Sunrise
- 6:54 AM
- Sunset
- 4:54 PM
- Day length
- 10h
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
Daylight overlap: 5h 35m — 11:20 AM–4:54 PM in Australian Eastern Time (4:50 AM–10:24 AM in Iran Standard Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Australian Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Australian Eastern Time
- SYD
- CBR
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Related conversions
Common conversions
- What is 9:00 am AEST in IRST?
- 9:00 am AEST is 2:30 am IRST.
- What is 12:00 pm AEST in IRST?
- 12:00 pm AEST is 5:30 am IRST.
- What is 12:30 pm AEST in IRST?
- 12:30 pm AEST is 6:00 am IRST.
- What is 2:00 pm AEST in IRST?
- 2:00 pm AEST is 7:30 am IRST.
- What is 5:00 pm AEST in IRST?
- 5:00 pm AEST is 10:30 am IRST.
- What is 11:30 pm AEST in IRST?
- 11:30 pm AEST is 5:00 pm IRST.