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).

IST to Toronto

-9h 30m

IST

ISTSOURCE

UTC+05:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Toronto

EDT

Canada · UTC-04:00☀ DST active

HH02

MM30

02:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

IST

Toronto

12:00 AM

2:30 PM-1

2:00 AM

4:30 PM-1

4:00 AM

6:30 PM-1

6:00 AM

8:30 PM-1

8:00 AM

10:30 PM-1

10:00 AM

12:30 AM

12:00 PM

2:30 AM

2:00 PM

4:30 AM

4:00 PM

6:30 AM

6:00 PM

8:30 AM

8:00 PM

10:30 AM

10:00 PM

12:30 PM

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

IST and EDT on the World Map

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

IST Zone

→

EDT Zone

Explore all world timezones interactively →

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST

IndiaSri Lanka

Major Cities in IST

MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat

Key Facts about IST

•India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
•India uses a single time zone despite spanning 30° of longitude.
•IST is one of only a handful of time zones with a 30-minute offset.
•IST is the most populous single time zone in the world with over 1.4 billion people.
•The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.

Daylight Saving:No – UTC+05:30 year-round

Learn more about IST 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 IST and Toronto Time

IST runs on India Standard Time (IST) at UTC+05:30. Toronto runs on Eastern Daylight Time (EDT) at UTC-04:00, also currently on daylight saving time. That puts IST 9 hours 30 minutes behind Toronto — a difference of -9h 30m at the current offsets.

In practice, when it is 9:00 AM in IST it is 11:30 PM in Toronto on the previous day. Midnight in IST is 2:30 PM in Toronto.Toronto observes daylight saving time while IST does not, so the gap narrows or widens by an hour part of the year.

IST to Toronto time conversion table

IST (IST)	Toronto (EDT)	Day
12:00 AM	2:30 PM	previous day
6:00 AM	8:30 PM	previous day
7:00 AM	9:30 PM	previous day
8:00 AM	10:30 PM	previous day
9:00 AM	11:30 PM	previous day
12:00 PM	2:30 AM	same day
3:00 PM	5:30 AM	same day
5:00 PM	7:30 AM	same day
6:00 PM	8:30 AM	same day
9:00 PM	11:30 AM	same day

Why people convert IST to Toronto time

Scheduling a call from IST to Toronto: a 10:00 AM start in IST lands at 12:30 AM in Toronto, so you can confirm the slot without doing the arithmetic yourself.
Handling a -9h 30m gap: IST and Toronto have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Toronto is 11:30 PM in IST.
Booking travel or deliveries: tracking Toronto local time against IST keeps pickup windows and arrival estimates honest across the -9h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -9h 30m gap is not.
With a -9h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week IST takes the early slot, the next week Toronto does.
Toronto: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

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 IST and Toronto

With a -9h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Toronto opens at 9:00 AM EDT, which is 11:30 PM in IST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

IST and Toronto have no shared working hours because of the -9h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.

IST is 9 hours 30 minutes behind Toronto (IST UTC+05:30 → EDT UTC-04:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

IST

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 IST and Toronto?

IST (IST, UTC+05:30) is 9 hours 30 minutes behind Toronto (EDT, UTC-04:00). The gap is currently -9h 30m.

How do I convert IST time to Toronto time?

Add -9h 30m to IST local time. For example, 9:00 AM in IST is 11:30 PM in Toronto (previous day).

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 -9h 30m offset from IST.

What is the best time to call Toronto from IST?

There is no shared working-hours window because of the -9h 30m gap. The closest option is 1:00 PM in IST, which is 3:30 AM in Toronto.

Which is behind, IST or Toronto?

IST is 9 hours 30 minutes behind Toronto. When it is 12:00 PM in IST it is 2:30 AM in Toronto.

Do IST and Toronto use different time zones?

IST uses IST at UTC+05:30, while Toronto (Canada) uses EDT at UTC-04:00. The IANA identifiers are Asia/Kolkata and America/Toronto.

Does daylight saving time affect the IST–Toronto difference?

Yes at the moment: Toronto is on daylight saving time and IST is not, so the -9h 30m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share IST's time zone?

IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.

Which countries use IST, IST's zone?

IST is used in India, Sri Lanka.

Is there a day difference between IST and Toronto?

Not normally. The -9h 30m gap only pushes the date over the previous day.

What is the time difference between IST and Toronto?

Toronto is -9h 30m from IST.

What timezone is IST in?

IST 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 IST (India Standard Time)?

IST is used in India, Sri Lanka.

Does IST observe daylight saving time?

No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.

What are some interesting facts about IST?

India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.

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.