Tehran to AEST
+6h 30mTehran
IRSTSOURCEAEST
AESTGreen 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 – 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.
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •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.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
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:
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.
What timezone is AEST in?
AEST operates on its local timezone.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
Which countries use IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting 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).
Which cities are in the AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in Tehran, what time is it in AEST?
When it is 12:00 AM (midnight) in Tehran (IRST), it is +6h 30m later in AEST (AEST).
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