Does Tehran observe daylight saving time?

No. Tehran stays on IRST (UTC+3:30) all year, so its clocks don't change.

Does Toronto observe daylight saving time?

Yes. Toronto is on EDT (UTC-4) now, and its clocks go back 1 hour on Sun, Nov 1, to EST (UTC-5).

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

1:30 AM in Toronto, on the same day.

Tehran to Toronto Meeting Planner

Toronto is 7 hours 30 minutes behind Tehran right now. Their working days overlap for 30 minutes today.

Tehran · Iran

12:55 AM

Sun, Oct 18 · IRST

Toronto · Canada

5:25 PM

Sat, Oct 17 · EDT · summer time

Best Meeting Times Between Tehran and Toronto

4:30 PM to 5:00 PM in Tehran (9:00 AM to 9:30 AM in Toronto). That's when both cities are inside working hours, 9 AM to 5 PM, giving 30 minutes of overlap today.

Who's meeting

2 of 4 places

TehranOrganizerIran ·12:55AMnow
TorontoCanada ·· summer time5:25PMYesterday · now

Add a city

Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Tehran

Working hours, everywhere

Best times to meet

Sunday, October 18, 2026, in Tehran time.

4:30PMBest · OptimalWorking hours in Tehran (16:30) and Toronto (09:00).
2:30PMOption 2 · GoodWorking hours in Tehran (14:30); just outside working hours in Toronto (07:00).
3:00PMOption 3 · GoodWorking hours in Tehran (15:00); just outside working hours in Toronto (07:30).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a half hour of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
TehranUTC+3:30
TorontoEDT
UTC	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Tehran4:30 PM UTC+3:30Sun, Oct 18
Toronto9:00 AM EDTSun, Oct 18
UTC2026-10-18 13:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Tehran and Toronto

Toronto is 7 hours 30 minutes behind Tehran right now: Toronto is on EDT (UTC-4) and Tehran on IRST (UTC+3:30). That changes on Sun, Nov 1, when clocks go back in Toronto: then Toronto is 8 hours 30 minutes behind Tehran.

Time difference between Tehran and Toronto over the next 12 months
From	Difference	Why
Now	Toronto 7 hours 30 minutes behind	—
Sun, Nov 1	Toronto 8 hours 30 minutes behind	Clocks go back in Toronto
Sun, Mar 14, 2027	Toronto 7 hours 30 minutes behind	Clocks go forward in Toronto

Tehran is on Iran Standard Time. Toronto is on Eastern Standard Time.

Frequently Asked Questions: Tehran & Toronto Scheduling

What is the time difference between Tehran and Toronto?: Toronto is 7 hours 30 minutes behind Tehran right now: Toronto is on EDT (UTC-4) and Tehran on IRST (UTC+3:30). That changes on Sun, Nov 1, when clocks go back in Toronto: then Toronto is 8 hours 30 minutes behind Tehran.
What is the best time to schedule a meeting between Tehran and Toronto?: 4:30 PM to 5:00 PM in Tehran (9:00 AM to 9:30 AM in Toronto). That's when both cities are inside working hours, 9 AM to 5 PM, giving 30 minutes of overlap today.
Does Tehran observe daylight saving time?: No. Tehran stays on IRST (UTC+3:30) all year, so its clocks don't change.
Does Toronto observe daylight saving time?: Yes. Toronto is on EDT (UTC-4) now, and its clocks go back 1 hour on Sun, Nov 1, to EST (UTC-5).
What time is it in Toronto when it's 9 AM in Tehran?: 1:30 AM in Toronto, on the same day.

Or see every city pair, or plan with more places in the meeting planner.