Live · calculated from the IANA time-zone database
Time difference between New York and Seoul
Short answer
Seoul is 13 hours ahead of New York. Right now it is 08:36 in New York (EDT, UTC−4) and 21:36 in Seoul (GMT+9, UTC+9).
Right now
New York · United States
08:36
Tuesday, September 15, 2026
Eastern Daylight Time · EDT · UTC−4
Seoul · South Korea
21:36
Tuesday, September 15, 2026
Korean Standard Time · GMT+9 · UTC+9
Times at the moment this page was generated. Reload for a fresh reading.
Does the difference between New York and Seoul change during the year?
Yes. For 238 days of 2026 the difference is 13 hours, but it moves whenever New York or Seoul enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):
| From | Until | Seoul vs New York |
|---|---|---|
| January 1 | March 8 | +14 h |
| March 8 | November 1 | +13 h |
| November 1 | December 31 | +14 h |
The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.
Best time to call Seoul from New York (and vice versa)
With 13 hours between them there is no hour at which New York and Seoul are both inside a 9:00–17:00 working day. Teams split across these two cities usually alternate the sacrifice: one week the meeting lands early (7:00–8:00) in New York and late (18:00–19:00) in the other city, the next week the other way round. The Timezone Matcher grid shades exactly those compromise hours.
New York to Seoul conversion table
Each New York hour and its equivalent in Seoul today. Rows shaded green are working hours (9:00–17:00) in both cities at once.
| New York time · Tue, Sep 15 | Seoul time |
|---|---|
| 00:00 | 13:00 |
| 01:00 | 14:00 |
| 02:00 | 15:00 |
| 03:00 | 16:00 |
| 04:00 | 17:00 |
| 05:00 | 18:00 |
| 06:00 | 19:00 |
| 07:00 | 20:00 |
| 08:00 | 21:00 |
| 09:00 | 22:00 |
| 10:00 | 23:00 |
| 11:00 | 00:00next day |
| 12:00 | 01:00next day |
| 13:00 | 02:00next day |
| 14:00 | 03:00next day |
| 15:00 | 04:00next day |
| 16:00 | 05:00next day |
| 17:00 | 06:00next day |
| 18:00 | 07:00next day |
| 19:00 | 08:00next day |
| 20:00 | 09:00next day |
| 21:00 | 10:00next day |
| 22:00 | 11:00next day |
| 23:00 | 12:00next day |
Looking for it the other way round? This page covers both directions: Seoul to New York is the same difference with the sign flipped.
The two time zones
New York — America/New_York
New York keeps Eastern Time (ET): UTC−5 in winter (EST) and UTC−4 in summer (EDT), the reference zone for US finance, media and the whole East Coast from Boston to Miami.
Seoul — Asia/Seoul
Seoul keeps Korea Standard Time (UTC+9), identical to Tokyo all year round.
Frequently asked questions
How many hours difference between New York and Seoul?
Seoul is 13 hours ahead of New York. For most of the year (238 days) the difference is 13 hours; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.
When it is 12:00 noon in New York, what time is it in Seoul?
01:00 in Seoul the next day (at today's difference of 13 hours).
What is the best time for a meeting between New York and Seoul?
There is no overlap between the 9:00–17:00 working days of New York and Seoul. Teams usually alternate: an early-morning slot in New York lands in the late evening of the other city.
Do New York and Seoul observe daylight saving time?
New York: yes. Seoul: no. Because only one of them changes its clocks, the difference moves by one hour twice a year.
What time zone is New York in? And Seoul?
New York: Eastern Daylight Time (America/New_York, UTC−4). Seoul: Korean Standard Time (Asia/Seoul, UTC+9).
Tools
Meeting grid — add both cities and click a slot
Time zone converter — any city, any time
Working hours overlap calculator
Daylight saving time 2027 — all dates
More time differences from New York
More time differences from Seoul
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