Sydney to Tehran Time
AEST to IRST Converter — 9 AM AEST is 2:30 AM IRST
Sydney is 6 hours and 30 minutes ahead of Tehran. Convert any time between Sydney (AEST/AEDT) and Tehran (IRST/IRDT) instantly.
Sydney
Australia
Tehran
Iran
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Time Zone Comparison
Sydney to Tehran Time Conversion Table
| Sydney (AEST) | Tehran (IRST) |
|---|---|
| 1:00 AM | 5:30 PM |
| 2:00 AM | 7:30 PM |
| 4:00 AM | 9:30 PM |
| 6:00 AM | 11:30 PM |
| 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 |
Sydney & Tehran — Business & Scheduling Guide
Sydney (Australia) is a stable, resource-rich economy in the Asia-Pacific region, with key industries in mining, agriculture, finance, and tourism. Tehran (Iran) is an important regional economy, known for diverse sectors including services and trade. With a 6.5-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Sydney and Tehran
The 6.5-hour difference between Sydney and Tehran requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Australian work culture values work-life balance, with typical hours of 9 AM–5 PM and flexible arrangements common. Business hours typically follow a 9 AM–5 PM schedule. Teams often designate specific "overlap hours" for real-time collaboration and use asynchronous communication (Slack, email, recorded video) for the rest of the day.
Daylight Saving Time Considerations
Both Sydney and Tehran observe Daylight Saving Time. Sydney uses AEST/AEDT (switching between standard and daylight time), while Tehran uses IRST/IRDT. If their DST transitions happen on different dates — which is common, as the US, EU, and other regions change clocks on different weekends — the effective time difference between the two cities can shift by 1 hour for several weeks. Always double-check the actual offset during March–April and October–November.
AEST to IRST — Quick Reference
AEST (AEST/AEDT) stands for the timezone used in Sydney, Australia (UTC+10). IRST (IRST/IRDT) is the timezone used in Tehran, Iran (UTC+3:30). Sydney is 6 hours and 30 minutes ahead of Tehran.
To convert AEST to IRST, subtract 6.5 hours from AEST time. For example, AEST 9:00 AM = IRST 2:30 AM.
Key Facts
- •Time difference: Sydney (UTC+10) is 6 hours and 30 minutes ahead of Tehran (UTC+3:30).
- •Daylight Saving Time: Sydney observes DST (AEST/AEDT). Tehran observes DST (IRST/IRDT).
- •Regions: Sydney is located in Australia and uses the AEST/AEDT time zone. Tehran is located in Iran and uses the IRST/IRDT time zone.
- •Best time to call: The best time to call between Sydney and Tehran is 4:00 PM to 4:00 PM in Sydney time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Sydney and Tehran?
Sydney is 6 hours and 30 minutes ahead of Tehran.
What time is it in Tehran when it's 9 AM in Sydney?
When it's 9:00 AM in Sydney, it is 2:30 AM in Tehran.
What time is 9 PM AEST in IRST?
9 PM AEST (Sydney time) is 2:30 PM IRST (Tehran time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Sydney and Tehran?
The best time to schedule a meeting is between 4:00 PM to 4:00 PM in Sydney time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert AEST to IRST?
AEST (AEST/AEDT) is the timezone for Sydney, Australia (UTC+10). IRST (IRST/IRDT) is the timezone for Tehran, Iran (UTC+3:30). Sydney is 6 hours and 30 minutes ahead of Tehran. Quick examples: 9 AM AEST = 2:30 AM IRST, 12 PM AEST = 5:30 AM IRST, 3 PM AEST = 8:30 AM IRST, 6 PM AEST = 11:30 AM IRST.
Is Sydney ahead of or behind Tehran?
Sydney is 6 hours 30 minutes ahead of Tehran. When it's noon in Sydney, it's 5:30 AM in Tehran.
Does Sydney or Tehran change clocks for Daylight Saving Time?
Yes, Sydney observes DST and switches between AEST/AEDT. Tehran observes DST and switches between IRST/IRDT.
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