Time Difference: Sydney vs Tehran
Tehran is 7.5 hours behind Sydney.
Quick Reference
- Sydney
- AEDT (GMT+11)
AEST starts on Apr 4, 2026
- Tehran
- IRST (GMT+3:30)
No Daylight Saving Time
Frequently Asked Questions
- What is the time difference between Sydney and Tehran?
- Tehran is 7.5 hours behind Sydney.
- When is the best time to call from Sydney to Tehran?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Sydney uses AEDT and Tehran uses IRST.