United States to South Korea Time Converter

United States is 13 hours behind South Korea

United States has multiple timezones — select a region:

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

South Korea

South Korea · +13h

22:00

London

United Kingdom · +5h

14:00

Tokyo

Japan · +13h

22:00

Dubai

United Arab Emirates · +8h

17:00

Sydney

Australia · +14h

23:00

United States to South Korea — exact time difference

United States is 13 hours behind South Korea. Midday in United States lines up with 01:00 in South Korea.

United States is in the America/New_York timezone. South Korea is in Asia/Seoul. The difference is 13 hours.

Working hours overlap

United States and South Korea 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 United States and South Korea don't share working hours, these are the most practical options available.

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

⚠️ 4h before working hours in Seoul

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

⚠️ 4h after working hours in New York

15:00 New York / 04:00 Seoul⚡ 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.

Upcoming public holidays

⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.

United States8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

South Korea7 holidays

Aug 15Liberation Day

Sep 24Chuseok

Sep 25Chuseok

Sep 26Chuseok

Oct 3National Foundation Day

How to work with United States and South Korea time zones

Working across United States (USA) and South Korea (South Korea) 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.

💡 How to schedule across these time zones

⚡

When United States is at 16:00, South Korea reads 05:00 — 4h before working hours in Seoul.

⚡

When United States is at 20:00, South Korea reads 09:00 — 4h after working hours in New York.

⚡

When United States is at 15:00, South Korea reads 04:00 — 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 United States. The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

United States (Eastern) ↔ South Korea

No overlap — one side will join outside working hours

United States (Eastern)

South Korea

00:00

13:00Working

01:00

14:00Working

02:00

15:00Working

03:00

16:00Working

04:00

17:00

05:00

18:00

06:00

19:00

07:00

20:00

08:00

21:00

09:00Working

22:00off

10:00Working

23:00off

11:00Working

00:00+1doff

12:00Working

01:00+1doff

13:00Working

02:00+1doff

14:00Working

03:00+1doff

15:00Working

04:00+1doff

16:00Working

05:00+1doff

17:00

06:00+1d

18:00

07:00+1d

19:00

08:00+1d

20:00

09:00+1dWorking

21:00

10:00+1dWorking

22:00

11:00+1dWorking

23:00

12:00+1dWorking

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the time difference between United States and South Korea?

United States is 13 hours behind South Korea.

How do I convert United States time to South Korea time?

Use the converter above. Drag the slider or type a time to instantly see the equivalent in South Korea.

What timezone does United States use?

United States has multiple timezones. The main timezone is America/New_York (Eastern).

What timezone does South Korea use?

South Korea uses Asia/Seoul (KST).