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

4:30 PM — as of 5 October 2026. Tehran is 7 hours 30 minutes ahead of Toronto.

Does the time difference between Toronto and Tehran change?

Yes. In 2026 it's 8 hours 30 minutes or 7 hours 30 minutes, depending on the date, because only Toronto changes its clocks.

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

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

What time zones are Toronto and Tehran in?

Toronto uses America/Toronto (UTC−4 today); Tehran uses Asia/Tehran (UTC+3:30 today).

Time difference between Toronto and Tehran

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

From

Tehran is 7 hours 30 minutes ahead of Toronto.

On Monday, 5 October 2026, 09:00 in Toronto is 16:30 in Tehran. Toronto is UTC−4; Tehran is UTC+3:30.

The gap through 2026

1 Jan – 8 MarTehran is 8 hours 30 minutes ahead of Toronto.
8 Mar – 1 NovTehran is 7 hours 30 minutes ahead of Toronto.
1 Nov – 31 DecTehran is 8 hours 30 minutes ahead of Toronto.

Toronto moves its clocks forward on 8 March (UTC−5 → UTC−4).
Toronto moves its clocks back on 1 November (UTC−4 → UTC−5).

Toronto to Tehran, hour by hour

On Monday 5 October.

Toronto	Tehran
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

Toronto moves its clocks forward on Sunday 8 March (UTC−5 → UTC−4).
Toronto moves its clocks back on Sunday 1 November (UTC−4 → UTC−5).

1 Jan – 8 MarTehran is 8 hours 30 minutes ahead of Toronto.
8 Mar – 1 NovTehran is 7 hours 30 minutes ahead of Toronto.
1 Nov – 31 DecTehran is 8 hours 30 minutes ahead of Toronto.

Best times for a call

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

Toronto 07:00Early morningTehran 14:30Working hours
Toronto 08:30Early morningTehran 16:00Working hours
Toronto 09:30Working hoursTehran 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 Tehran when it's 9 AM in Toronto?: 4:30 PM — as of 5 October 2026. Tehran is 7 hours 30 minutes ahead of Toronto.
Does the time difference between Toronto and Tehran change?: Yes. In 2026 it's 8 hours 30 minutes or 7 hours 30 minutes, depending on the date, because only Toronto changes its clocks.
What's the best time for a call between Toronto and Tehran?: Between 09:00 and 09:30 Toronto time, when both cities are in working hours (09:00–17:00).
What time zones are Toronto and Tehran in?: Toronto uses America/Toronto (UTC−4 today); Tehran uses Asia/Tehran (UTC+3:30 today).

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