Korea Standard Time (kst) is used in South Korea. The IANA timezone identifier is Asia/Seoul.

KST to NEW-YORK Time Converter

Q: Where is new-york used?

NEW-YORK (New York) (new-york) is used in USA. The IANA timezone identifier is America/New_York.

Korea Standard Time → NEW-YORK (New York)

KST = UTC+9NEW-YORK = UTC-4

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

New York

USA · -13h

20:00-1 day

London

United Kingdom · -8h

01:00

Tokyo

Japan · UTC±0

09:00

Dubai

United Arab Emirates · -5h

04:00

Sydney

Australia · +1h

10:00

KST (Seoul) to New York — exact time difference

KST (Seoul) is 13 hours ahead of New York. When KST (Seoul) clocks hit noon, New York reads 23:00.

KST (Seoul) is in the Asia/Seoul timezone. New York is in America/New_York. The difference is 13 hours.

Working hours overlap

KST (Seoul) and New York have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.

When to schedule across time zones

Since KST (Seoul) and New York don't share working hours, these are the most practical options available.

05:00 Seoul / 16:00 New York⚡ One side off-hours

⚠️ 4h before working hours in Seoul

09:00 Seoul / 20:00 New York⚡ One side off-hours

⚠️ 4h after working hours in New York

04:00 Seoul / 15:00 New York⚡ One side off-hours

⚠️ 5h before working hours in Seoul

Based on standard 09:00–17:00 working hours in each location's local time.

Holiday calendar for both locations

⚡ Both locations have upcoming holidays, check availability before scheduling.

KST (Seoul)7 holidays

Aug 15Liberation Day

Sep 24Chuseok

Sep 25Chuseok

Sep 26Chuseok

Oct 3National Foundation Day

New York7 holidays

Jul 3Independence DaySOON

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Nov 11Veterans Day

Working across KST (Seoul) and New York

Working across KST (Seoul) (South Korea) and New York (USA) is a challenge — the 13-hour difference means no shared business hours window under a standard schedule. Flexibility from at least one side is required.

💡 Best practice for cross-timezone meetings

⚡

When KST (Seoul) is at 05:00, New York reads 16:00 — 4h before working hours in Seoul.

⚡

When KST (Seoul) is at 09:00, New York reads 20:00 — 4h after working hours in New York.

⚡

When KST (Seoul) is at 04:00, New York reads 15:00 — 5h before working hours in Seoul.

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in KST (Seoul). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

KST (Seoul) ↔ NEW-YORK (New York)

No overlap — one side will join outside working hours

KST (Seoul)

NEW-YORK (New York)