KST to Toronto
-13hKST
KSTSOURCEToronto
EDTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and EDT on the World Map
The map below highlights the KST (Korea Standard Time) and EDT (Eastern Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
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 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.
Everything You Need to Know About KST and Toronto Time
KST runs on Korea Standard Time (KST) at UTC+09:00. Toronto runs on Eastern Daylight Time (EDT) at UTC-04:00, also currently on daylight saving time. That puts KST 13 hours behind Toronto — a difference of -13h at the current offsets.
In practice, when it is 9:00 AM in KST it is 8:00 PM in Toronto on the previous day. Midnight in KST is 11:00 AM in Toronto.Toronto observes daylight saving time while KST does not, so the gap narrows or widens by an hour part of the year.
KST to Toronto time conversion table
| KST (KST) | Toronto (EDT) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | previous day |
| 6:00 AM | 5:00 PM | previous day |
| 7:00 AM | 6:00 PM | previous day |
| 8:00 AM | 7:00 PM | previous day |
| 9:00 AM | 8:00 PM | previous day |
| 12:00 PM | 11:00 PM | previous day |
| 3:00 PM | 2:00 AM | same day |
| 5:00 PM | 4:00 AM | same day |
| 6:00 PM | 5:00 AM | same day |
| 9:00 PM | 8:00 AM | same day |
Why people convert KST to Toronto time
- Scheduling a call from KST to Toronto: a 10:00 AM start in KST lands at 9:00 PM in Toronto the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -13h gap: KST 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 8:00 PM in KST.
- Watching a live event or market open: KST viewers need 8:00 PM in Toronto to catch a 9:00 AM start there, and 1:00 PM if the event is anchored to KST.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -13h gap is not.
- With a -13h gap there is no shared 9-to-5 window, so alternate the early start: one week KST 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 KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
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 KST and Toronto
With a -13h offset there is no overlap inside a normal 9 AM – 5 PM day. Toronto opens at 9:00 AM EDT, which is 8:00 PM in KST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
KST and Toronto have no shared working hours because of the -13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
KST is 13 hours behind Toronto (KST UTC+09:00 → 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
KST
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 KST and Toronto?
KST (KST, UTC+09:00) is 13 hours behind Toronto (EDT, UTC-04:00). The gap is currently -13h.
How do I convert KST time to Toronto time?
Add -13h to KST local time. For example, 9:00 AM in KST is 8:00 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 -13h offset from KST.
What is the best time to call Toronto from KST?
There is no shared working-hours window because of the -13h gap. The closest option is 1:00 PM in KST, which is 12:00 AM in Toronto.
Which is behind, KST or Toronto?
KST is 13 hours behind Toronto. When it is 12:00 PM in KST it is 11:00 PM in Toronto.
Do KST and Toronto use different time zones?
KST uses KST at UTC+09:00, while Toronto (Canada) uses EDT at UTC-04:00. The IANA identifiers are Asia/Seoul and America/Toronto.
Does daylight saving time affect the KST–Toronto difference?
Yes at the moment: Toronto is on daylight saving time and KST is not, so the -13h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and Toronto?
Sometimes. The -13h gap is large enough that 8:00 PM or later in KST already falls on the in Toronto.
What is the time difference between KST and Toronto?
Toronto is -13h from KST.
What timezone is KST in?
KST 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 KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
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 KST, what time is it in Toronto?
When it is 12:00 AM (midnight) in KST (KST), it is -13h later in Toronto (EST).
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