Colombo to Toronto
-9h 30mColombo
ISTSOURCEToronto
EDTGreen 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 – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •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.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •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.
About Colombo
WikipediaColombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.
About Toronto
WikipediaToronto 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.
Toronto is the most multicultural city in the world - over 50% of residents were born outside Canada.
Time Conversion Guide: Colombo to Toronto
Colombo 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 Colombo 9 hours 30 minutes behind Toronto — a difference of -9h 30m at the current offsets.
In practice, when it is 9:00 AM in Colombo it is 11:30 PM in Toronto on the previous day. Midnight in Colombo is 2:30 PM in Toronto.Toronto observes daylight saving time while Colombo does not, so the gap narrows or widens by an hour part of the year.
Colombo to Toronto time conversion table
| Colombo (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 Colombo to Toronto time
- Scheduling a call from Colombo to Toronto: a 10:00 AM start in Colombo lands at 12:30 AM in Toronto, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h 30m gap: Colombo 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 Colombo.
- Watching a live event or market open: Colombo viewers need 11:30 PM in Toronto to catch a 9:00 AM start there, and 9:30 AM if the event is anchored to Colombo.
- 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 Colombo 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 Colombo 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 Colombo, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Colombo and Toronto have no shared working hours because of the -9h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Colombo 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
Colombo
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:
Frequently Asked Questions
What is the time difference between Colombo and Toronto?
Colombo (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 Colombo time to Toronto time?
Add -9h 30m to Colombo local time. For example, 9:00 AM in Colombo 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 Colombo.
What is the best time to call Toronto from Colombo?
There is no shared working-hours window because of the -9h 30m gap. The closest option is 1:00 PM in Colombo, which is 3:30 AM in Toronto.
Which is behind, Colombo or Toronto?
Colombo is 9 hours 30 minutes behind Toronto. When it is 12:00 PM in Colombo it is 2:30 AM in Toronto.
Do Colombo and Toronto use different time zones?
Colombo (Sri Lanka) uses IST at UTC+05:30, while Toronto (Canada) uses EDT at UTC-04:00. The IANA identifiers are Asia/Colombo and America/Toronto.
Does daylight saving time affect the Colombo–Toronto difference?
Yes at the moment: Toronto is on daylight saving time and Colombo is not, so the -9h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Colombo's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Colombo's zone?
IST is used in India, Sri Lanka.
Is there a day difference between Colombo and Toronto?
Not normally. The -9h 30m gap only pushes the date over the previous day.
What is the time difference between Colombo and Toronto?
Toronto is -9h 30m from Colombo.
What timezone is Colombo in?
Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
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 Colombo?
Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.
What are the business hours in Toronto?
Standard business hours in Toronto are 9:00 AM - 5:00 PM EST.
What is the best time to schedule a call between Colombo and Toronto?
The best overlap for a call is when both cities are in business hours. Colombo works 9:00 AM - 5:00 PM IST and Toronto works 9:00 AM - 5:00 PM EST (-9h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Colombo and Toronto?
Colombo uses LKR (Rs) while Toronto uses CAD (C$). Check current exchange rates when planning travel or business between these cities.
How do Colombo and Toronto compare in size?
Colombo has a population of approximately 752,000 (metro: 5.6 million), while Toronto has approximately 2.9 million (metro: 6.3 million).
What are the major landmarks in Colombo and Toronto?
Colombo is known for Galle Face Green, Gangaramaya Temple, Colombo Lotus Tower. Toronto is famous for CN Tower, Royal Ontario Museum, Ripley's Aquarium.
Do Colombo and Toronto have stock exchanges?
Yes. Colombo has the CSE (Colombo Stock Exchange) and Toronto has the TSX (Toronto Stock Exchange). The -9h 30m time difference affects trading hour overlaps between these exchanges.
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.
When is it midnight in Colombo, what time is it in Toronto?
When it is 12:00 AM (midnight) in Colombo (IST), it is -9h 30m later in Toronto (EST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Colombo time conversions
- colombo to sri lanka
- colombo to dubai
- colombo to mumbai
- colombo to delhi
- colombo to bangalore
- colombo to kathmandu
- colombo to bangkok
- colombo to singapore
- colombo to hong kong
- colombo to shanghai
- colombo to beijing
- colombo to tokyo
- colombo to osaka
- colombo to new york
- colombo to london
- colombo to sydney
- colombo to los angeles
- colombo to paris
- colombo to berlin
- new york to colombo
- london to colombo
- dubai to colombo
- tokyo to colombo
- singapore to colombo
- sydney to colombo
- los angeles to colombo
- paris to colombo
- delhi to colombo
- mumbai to colombo
- berlin to colombo
- hong kong to colombo
- toronto to colombo
- kathmandu to colombo
See every conversion from Colombo →·See every conversion from Toronto →