AEDT to IRST
-7h 30mAEDT
AEDTSOURCEIRST
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
AEDT and IRST on the World Map
The map below highlights the AEDT (Australian Eastern Daylight Time) and IRST (Iran Standard Time) timezone regions across the globe.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •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.
AEDT vs IRST: Offsets, DST and Best Call Times
AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. IRST runs on Iran Standard Time (IRST) at UTC+03:30. That puts AEDT 7 hours 30 minutes behind IRST — a difference of -7h 30m at the current offsets.
In practice, when it is 9:00 AM in AEDT it is 1:30 AM in IRST. Midnight in AEDT is 4:30 PM in IRST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AEDT to IRST time conversion table
| AEDT (AEDT) | IRST (IRST) | Day |
|---|---|---|
| 12:00 AM | 4:30 PM | previous day |
| 6:00 AM | 10:30 PM | previous day |
| 7:00 AM | 11:30 PM | previous day |
| 8:00 AM | 12:30 AM | same day |
| 9:00 AM | 1:30 AM | same day |
| 12:00 PM | 4:30 AM | same day |
| 3:00 PM | 7:30 AM | same day |
| 5:00 PM | 9:30 AM | same day |
| 6:00 PM | 10:30 AM | same day |
| 9:00 PM | 1:30 PM | same day |
Why people convert AEDT to IRST time
- Scheduling a call from AEDT to IRST: a 10:00 AM start in AEDT lands at 2:30 AM in IRST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both AEDT and IRST are inside the 9-to-5 working day between 4:30 PM and 5:00 PM AEDT time (9:00 AM–9:30 AM IRST). That is roughly 0 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in AEDT is 12:30 PM in IRST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEDT" is unambiguous; "3 PM" across a -7h 30m gap is not.
- Block 4:30 PM–5:00 PM AEDT as the recurring meeting window if you work primarily from AEDT and need IRST colleagues present.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
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 AEDT and IRST
Both AEDT and IRST sit inside the 9 AM – 5 PM working day between 4:30 PM–5:00 PM AEDT, which is 9:00 AM–9:30 AM IRST. That gives roughly 0 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
AEDT and IRST overlap for only 30 minutes (4:30 PM–5:00 PM AEDT), so meetings have to be booked precisely.
AEDT is 7 hours 30 minutes behind IRST (AEDT UTC+11:00 → IRST UTC+03:30). The shared working window is 4:30 PM–5:00 PM AEDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AEDT
❄ 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:
Frequently Asked Questions
What is the time difference between AEDT and IRST?
AEDT (AEDT, UTC+11:00) is 7 hours 30 minutes behind IRST (IRST, UTC+03:30). The gap is currently -7h 30m.
How do I convert AEDT time to IRST time?
Add -7h 30m to AEDT local time. For example, 9:00 AM in AEDT is 1:30 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 -7h 30m offset from AEDT.
What is the best time to call IRST from AEDT?
Call between 4:30 PM and 5:00 PM AEDT — that maps to 9:00 AM–9:30 AM IRST and keeps both parties inside the working day.
Which is behind, AEDT or IRST?
AEDT is 7 hours 30 minutes behind IRST. When it is 12:00 PM in AEDT it is 4:30 AM in IRST.
Does daylight saving time affect the AEDT–IRST difference?
Neither zone observes daylight saving time, so the -7h 30m offset between AEDT and IRST is fixed all year.
Which other cities share AEDT's time zone?
AEDT also covers Sydney, Melbourne, Canberra, Hobart, Newcastle.
Which countries use AEDT, AEDT's zone?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Is there a day difference between AEDT and IRST?
Not normally. The -7h 30m gap only pushes the date over the previous day.
What is the time difference between AEDT and IRST?
IRST is -7h 30m from AEDT.
What timezone is AEDT in?
AEDT operates on its local timezone.
What timezone is IRST in?
IRST operates on its local timezone.
Which countries use AEDT (Australian Eastern Daylight Time)?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Does AEDT observe daylight saving time?
Yes, AEDT switches to AEDT during summer months.
What are some interesting facts about AEDT?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
Which cities are in the IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
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).
When is it midnight in AEDT, what time is it in IRST?
When it is 12:00 AM (midnight) in AEDT (AEDT), it is -7h 30m later in IRST (IRST).
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See every conversion from AEDT →·See every conversion from IRST →