What time is it in Sydney when it's 9 AM in Tehran?

4:30 PM — as of 6 October 2026. Sydney is 7 hours 30 minutes ahead of Tehran.

Does the time difference between Tehran and Sydney change?

Yes. In 2026 it's 7 hours 30 minutes or 6 hours 30 minutes, depending on the date, because only Sydney changes its clocks.

What's the best time for a call between Tehran and Sydney?

Between 09:00 and 09:30 Tehran time, when both cities are in working hours (09:00–17:00).

What time zones are Tehran and Sydney in?

Tehran uses Asia/Tehran (UTC+3:30 today); Sydney uses Australia/Sydney (UTC+11 today).

Time difference between Tehran and Sydney

Sydney is 7 hours 30 minutes ahead of Tehran. When it's 9:00 in Tehran, it's 16:30 in Sydney.

From

Sydney is 7 hours 30 minutes ahead of Tehran.

On Tuesday, 6 October 2026, 09:00 in Tehran is 16:30 in Sydney. Tehran is UTC+3:30; Sydney is UTC+11.

The gap through 2026

1 Jan – 4 AprSydney is 7 hours 30 minutes ahead of Tehran.
4 Apr – 3 OctSydney is 6 hours 30 minutes ahead of Tehran.
3 Oct – 31 DecSydney is 7 hours 30 minutes ahead of Tehran.

Sydney moves its clocks back on 4 April (UTC+11 → UTC+10).
Sydney moves its clocks forward on 3 October (UTC+10 → UTC+11).

Tehran to Sydney, hour by hour

On Tuesday 6 October.

Tehran	Sydney
07:00 Early morning	14:30 Working hours
08:00 Early morning	15:30 Working hours
09:00 Working hours	16:30 Working hours
10:00 Working hours	17:30 Evening
11:00 Working hours	18:30 Evening
12:00 Working hours	19:30 Evening
13:00 Working hours	20:30 Evening
14:00 Working hours	21:30 Evening
15:00 Working hours	22:30 Sleeping hours
16:00 Working hours	23:30 Sleeping hours
17:00 Evening	00:30+1 Sleeping hours
18:00 Evening	01:30+1 Sleeping hours
19:00 Evening	02:30+1 Sleeping hours
20:00 Evening	03:30+1 Sleeping hours
21:00 Evening	04:30+1 Sleeping hours
22:00 Sleeping hours	05:30+1 Sleeping hours

Daylight saving in 2026

Sydney moves its clocks back on Saturday 4 April (UTC+11 → UTC+10).
Sydney moves its clocks forward on Saturday 3 October (UTC+10 → UTC+11).

1 Jan – 4 AprSydney is 7 hours 30 minutes ahead of Tehran.
4 Apr – 3 OctSydney is 6 hours 30 minutes ahead of Tehran.
3 Oct – 31 DecSydney is 7 hours 30 minutes ahead of Tehran.

Best times for a call

Working hours (09:00–17:00) overlap for 30 minutes: 09:00–09:30 in Tehran, which is 16:30–17:00 in Sydney.

Tehran 07:00Early morningSydney 14:30Working hours
Tehran 08:30Early morningSydney 16:00Working hours
Tehran 09:30Working hoursSydney 17:00Evening

How the time difference calculator works

The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.

Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.

Examples

London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.

Good for

Knowing when a colleague's day starts
Setting expectations for replies across time zones
Planning travel and jet lag

Frequently asked questions

What time is it in Sydney when it's 9 AM in Tehran?: 4:30 PM — as of 6 October 2026. Sydney is 7 hours 30 minutes ahead of Tehran.
Does the time difference between Tehran and Sydney change?: Yes. In 2026 it's 7 hours 30 minutes or 6 hours 30 minutes, depending on the date, because only Sydney changes its clocks.
What's the best time for a call between Tehran and Sydney?: Between 09:00 and 09:30 Tehran time, when both cities are in working hours (09:00–17:00).
What time zones are Tehran and Sydney in?: Tehran uses Asia/Tehran (UTC+3:30 today); Sydney uses Australia/Sydney (UTC+11 today).

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