New York to Seoul time
A live converter that maps the 13-14 hour gap between New York and Seoul, applying U.S. daylight saving automatically so you can line up calls, meetings, and broadcasts at a glance.
Enter a valid date and time.
🔒 Conversion runs only in your browser — it works offline and nothing is uploaded.
New York to Seoul: 13 hours or 14?
Seoul always runs a full day ahead of New York, but the exact gap depends on whether U.S. daylight saving time is in effect. From the second Sunday in March to the first Sunday in November, New York sits on EDT (UTC-4) and Seoul is 13 hours ahead. Through the winter, New York returns to EST (UTC-5) and the gap widens to 14 hours. Korea dropped daylight saving back in 1988, so Seoul stays fixed at UTC+9 year-round, meaning every shift comes from the New York side. The converter above reads the date you pick and applies the correct offset automatically.
Worked examples for summer and winter
In summer, 9 AM in New York plus 13 hours lands on 10 PM (22:00) the same day in Seoul. In winter that same 9 AM becomes 11 PM (23:00) in Seoul, because the gap grows to 14 hours. Going the other way, a 10 AM meeting in Seoul falls at 9 PM the previous evening in New York during summer, or 8 PM the previous evening in winter. Since New York's morning is Seoul's late night, the only comfortable overlap for a live call is a New York morning against a Seoul evening.
When the gap actually matters
You feel these 13-14 hours whenever you phone family in New York or reach a U.S. support line, catch the opening bell on Wall Street (9:30 AM ET) or an NBA or MLB broadcast, or estimate the local arrival time of a nonstop Seoul-to-JFK flight. The New York Stock Exchange opens at 10:30 PM Seoul time in summer and 11:30 PM in winter, for example. Enter the exact date and the converter accounts for the daylight-saving switchover, so a meeting scheduled across the changeover week never slips by an hour.
Frequently asked questions
If it's 3 PM in New York, what time is it in Seoul?
During daylight saving (summer), add 13 hours and it's 4 AM the next day in Seoul. In winter standard time, add 14 hours and it's 5 AM the next day. Enter a specific date in the converter and it shows the exact time that applies.
Is Seoul 13 or 14 hours ahead of New York?
Both are correct at different times of year. Seoul is 13 hours ahead during U.S. daylight saving time (second Sunday of March to first Sunday of November) and 14 hours ahead the rest of the year. Korea observes no daylight saving, so New York is always the side that changes.
Why does the difference change between 13 and 14 hours?
The U.S. moves its clocks forward in spring and back in autumn while Korea does not, so the offset swings between 13 and 14 hours around each transition date. The tool calculates the offset that actually applies to the date you enter, so it stays accurate even during the switchover weeks.