Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Iran to Toronto

-7h 30m

Iran

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Toronto

EDT

Canada · UTC-04:00☀ DST active

HH04

MM30

04:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Iran

Toronto

12:00 AM

4:30 PM-1

2:00 AM

6:30 PM-1

4:00 AM

8:30 PM-1

6:00 AM

10:30 PM-1

8:00 AM

12:30 AM

10:00 AM

2:30 AM

12:00 PM

4:30 AM

2:00 PM

6:30 AM

4:00 PM

8:30 AM

6:00 PM

10:30 AM

8:00 PM

12:30 PM

10:00 PM

2:30 PM

Green rows indicate typical business hours (9 AM - 5 PM)

IRST and EDT on the World Map

The map below highlights the IRST (Iran Standard Time) and EDT (Eastern Standard Time) timezone regions across the globe.

IRST Zone

→

EDT Zone

Explore all world timezones interactively →

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST on Wikipedia

EST – Eastern Standard Time

UTC-05:00

Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.

Countries in EST

United States (Eastern)Canada (Ontario, Quebec)Mexico (Quintana Roo)PanamaJamaicaCayman IslandsHaitiBahamasTurks and CaicosColombiaPeruEcuador

Major Cities in EST

New York CityWashington D.C.MiamiTorontoPhiladelphiaAtlantaBostonMontrealDetroitCharlotteIndianapolisOttawaTampaOrlandoClevelandPittsburgh

Key Facts about EST

•EST is the most widely used time zone in the United States by population.
•The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
•23 US states are fully or partially in the Eastern Time Zone.
•EST was established by the Standard Time Act of 1918.
•Over 47% of the US population lives in the Eastern Time Zone.

Daylight Saving:Yes – switches to EDT

Learn more about EST on Wikipedia

About Toronto

Wikipedia

Toronto shares Eastern Time (EST/EDT) with New York. As Canada's largest city and financial center, Toronto's TSX is among North America's largest stock exchanges.

Population:2.9 million

Metro:6.3 million

Business Hours:9:00 AM - 5:00 PM EST

Currency:CAD (C$)

Stock Exchange:TSX (Toronto Stock Exchange)

Key Landmarks

CN TowerRoyal Ontario MuseumRipley's AquariumCasa LomaSt. Lawrence Market

Did You Know?

Toronto is the most multicultural city in the world - over 50% of residents were born outside Canada.

Learn more about EDT timezone →

Everything You Need to Know About Iran and Toronto Time

Iran runs on Iran Standard Time (IRST) at UTC+03:30. Toronto runs on Eastern Daylight Time (EDT) at UTC-04:00, also currently on daylight saving time. That puts Iran 7 hours 30 minutes behind Toronto — a difference of -7h 30m at the current offsets.

In practice, when it is 9:00 AM in Iran it is 1:30 AM in Toronto. Midnight in Iran is 4:30 PM in Toronto.Toronto observes daylight saving time while Iran does not, so the gap narrows or widens by an hour part of the year.

Iran to Toronto time conversion table

Iran (IRST)	Toronto (EDT)	Day
12:00 AM	4:30 PM	previous day
6:00 AM	10:30 PM	previous day
7:00 AM	11:30 PM	previous day
8:00 AM	12:30 AM	same day
9:00 AM	1:30 AM	same day
12:00 PM	4:30 AM	same day
3:00 PM	7:30 AM	same day
5:00 PM	9:30 AM	same day
6:00 PM	10:30 AM	same day
9:00 PM	1:30 PM	same day

Why people convert Iran to Toronto time

Scheduling a call from Iran to Toronto: a 10:00 AM start in Iran lands at 2:30 AM in Toronto, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Iran and Toronto are inside the 9-to-5 working day between 4:30 PM and 5:00 PM IRST time (9:00 AM–9:30 AM EDT). That is roughly 0 hours 30 minutes of usable overlap.
Watching a live event or market open: Iran viewers need 1:30 AM in Toronto to catch a 9:00 AM start there, and 7:30 AM if the event is anchored to Iran.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a -7h 30m gap is not.
Block 4:30 PM–5:00 PM IRST as the recurring meeting window if you work primarily from Iran and need Toronto colleagues present.
Toronto: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.

About IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

About EST (Eastern Standard Time)

Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.

Best time to call between Iran and Toronto

Both Iran and Toronto sit inside the 9 AM – 5 PM working day between 4:30 PM–5:00 PM IRST, which is 9:00 AM–9:30 AM EDT. That gives roughly 0 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Iran and Toronto overlap for only 30 minutes (4:30 PM–5:00 PM IRST), so meetings have to be booked precisely.

Iran is 7 hours 30 minutes behind Toronto (IRST UTC+03:30 → EDT UTC-04:00). The shared working window is 4:30 PM–5:00 PM IRST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Iran

Does not observe DST

Toronto

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Iran and Toronto?

Iran (IRST, UTC+03:30) is 7 hours 30 minutes behind Toronto (EDT, UTC-04:00). The gap is currently -7h 30m.

How do I convert Iran time to Toronto time?

Add -7h 30m to Iran local time. For example, 9:00 AM in Iran is 1:30 AM in Toronto.

What time is it in Toronto right now?

Toronto uses EDT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h 30m offset from Iran.

What is the best time to call Toronto from Iran?

Call between 4:30 PM and 5:00 PM IRST — that maps to 9:00 AM–9:30 AM EDT and keeps both parties inside the working day.

Which is behind, Iran or Toronto?

Iran is 7 hours 30 minutes behind Toronto. When it is 12:00 PM in Iran it is 4:30 AM in Toronto.

Do Iran and Toronto use different time zones?

Iran (Iran) uses IRST at UTC+03:30, while Toronto (Canada) uses EDT at UTC-04:00. The IANA identifiers are Asia/Tehran and America/Toronto.

Does daylight saving time affect the Iran–Toronto difference?

Yes at the moment: Toronto is on daylight saving time and Iran is not, so the -7h 30m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Iran's time zone?

IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.

Which countries use IRST, Iran's zone?

IRST is used in Iran.

Is there a day difference between Iran and Toronto?

Not normally. The -7h 30m gap only pushes the date over the previous day.

What is the time difference between Iran and Toronto?

Toronto is -7h 30m from Iran.

What timezone is Iran in?

Iran operates on its local timezone.

What timezone is Toronto in?

Toronto shares Eastern Time (EST/EDT) with New York. As Canada's largest city and financial center, Toronto's TSX is among North America's largest stock exchanges.

What are the business hours in Toronto?

Standard business hours in Toronto are 9:00 AM - 5:00 PM EST.

Which countries use IRST (Iran Standard Time)?

IRST is used in Iran.

Does IRST observe daylight saving time?

Yes, IRST switches to IRDT during summer months.

What are some interesting facts about IRST?

IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).

Which cities are in the EST timezone?

Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EST?

Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.

What should I know about the EST timezone?

EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.