New York to South Korea
+13hNew York
EDTSOURCESouth Korea
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
EDT and KST on the World Map
The map below highlights the EDT (Eastern Standard Time) and KST (Korea Standard Time) timezone regions across the globe.
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.
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).
About New York
WikipediaNew York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
New York City has more than 800 languages spoken, making it the most linguistically diverse city in the world.
Understanding the +13h Gap: New York vs South Korea
New York runs on Eastern Daylight Time (EDT) at UTC-04:00, currently observing daylight saving time. South Korea runs on Korean Standard Time (KST) at UTC+09:00. That puts New York 13 hours ahead of South Korea — a difference of +13h at the current offsets.
In practice, when it is 9:00 AM in New York it is 10:00 PM in South Korea. Midnight in New York is 1:00 PM in South Korea.New York observes daylight saving time while South Korea does not, so the gap narrows or widens by an hour part of the year.
New York to South Korea time conversion table
| New York (EDT) | South Korea (KST) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | same day |
| 6:00 AM | 7:00 PM | same day |
| 7:00 AM | 8:00 PM | same day |
| 8:00 AM | 9:00 PM | same day |
| 9:00 AM | 10:00 PM | same day |
| 12:00 PM | 1:00 AM | next day |
| 3:00 PM | 4:00 AM | next day |
| 5:00 PM | 6:00 AM | next day |
| 6:00 PM | 7:00 AM | next day |
| 9:00 PM | 10:00 AM | next day |
Why people convert New York to South Korea time
- Scheduling a call from New York to South Korea: a 10:00 AM start in New York lands at 11:00 PM in South Korea, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +13h gap: New York and South Korea 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 South Korea is 10:00 PM in New York.
- Coordinating a New York-based team with South Korea contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM EDT" 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 New York takes the early slot, the next week South Korea does.
- New York: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +13h gap.
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.
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.
Best time to call between New York and South Korea
With a +13h offset there is no overlap inside a normal 9 AM – 5 PM day. South Korea opens at 9:00 AM KST, which is 10:00 PM in New York, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
New York and South Korea have no shared working hours because of the +13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
New York is 13 hours ahead of South Korea (EDT UTC-04:00 → KST UTC+09:00). 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
New York
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
South Korea
Does not observe DST
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 New York and South Korea?
New York (EDT, UTC-04:00) is 13 hours ahead of South Korea (KST, UTC+09:00). The gap is currently +13h.
How do I convert New York time to South Korea time?
Add +13h to New York local time. For example, 9:00 AM in New York is 10:00 PM in South Korea.
What time is it in South Korea right now?
South Korea uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +13h offset from New York.
What is the best time to call South Korea from New York?
There is no shared working-hours window because of the +13h gap. The closest option is 1:00 PM in New York, which is 2:00 AM in South Korea.
Which is ahead, New York or South Korea?
New York is 13 hours ahead of South Korea. When it is 12:00 PM in New York it is 1:00 AM in South Korea.
Do New York and South Korea use different time zones?
New York (USA) uses EDT at UTC-04:00, while South Korea (South Korea) uses KST at UTC+09:00. The IANA identifiers are America/New_York and Asia/Seoul.
Does daylight saving time affect the New York–South Korea difference?
Yes at the moment: New York is on daylight saving time and South Korea is not, so the +13h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share New York's time zone?
EDT also covers New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal and 8 more.
Which countries use EDT, New York's zone?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, Haiti, Bahamas and 4 more.
Is there a day difference between New York and South Korea?
Sometimes. The +13h gap is large enough that 8:00 PM or later in New York already falls on the next day in South Korea.
What is the time difference between New York and South Korea?
South Korea is +13h from New York.
What timezone is New York in?
New York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
What timezone is South Korea in?
South Korea operates on its local timezone.
What are the business hours in New York?
Standard business hours in New York are 9:00 AM - 5:00 PM EST.
Which countries use EST (Eastern Standard Time)?
EST is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, and 6 more countries.
Does EST observe daylight saving time?
Yes, EST switches to EDT during summer months.
What are some interesting 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.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in New York, what time is it in South Korea?
When it is 12:00 AM (midnight) in New York (EST), it is +13h later in South Korea (KST).
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