The center of South Korea is 15 hours ahead of the center of the United States.


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United States
1:28 AM on Thursday, Apr 17, 2014

South Korea
4:28 PM on Thursday, Apr 17, 2014

Countries often span multiple time zones. We are using the America/Denver and Asia/Seoul time zones. For more accuracy, choose specific cities for each location.



Map from United States to South Korea

Schedule a phone call from United States to South Korea

If you live in United States and you want to call a friend in South Korea, you can try calling them between 4:00 PM and 8:00 AM your time. This will be between 7AM - 11PM their time, since South Korea is 15 hours ahead of United States.

If you're available any time, but you want to reach someone in South Korea at work, you may want to try between 6:00 PM and 2:00 AM your time. This is the best time to reach them from 9AM - 5PM during normal working hours.


find a flight to South Korea

Meeting planner for United States and South Korea

Unfortunately, there aren't any times that overlap between your normal working hours and theirs. The best we can do with the meeting planner is to expand the range to cover from 8:00 AM to 6:00 PM your time (United States).

To schedule a conference call or plan a meeting at the best time for both parties, you should try between 5:00 PM and 6:00 PM your time in United States. That will end up being between 8:00 AM and 9:00 AM in South Korea. The chart on the right shows overlapping times.


UTC-6 hours     UTC+9 hours
United States     South Korea
5:00 PM     8:00 AM
5:30 PM     8:30 AM
6:00 PM     9:00 AM

United States

Country: United States
Continent: North America
Category: countries
Time zone: America/Denver (UTC/GMT -6 hours)

South Korea

Country: South Korea
Continent: Asia
Category: countries
Time zone: Asia/Seoul (UTC/GMT +9 hours)

Find the time difference between cities

Enter your locations below to find the time zone difference between them. Type in airport codes (CPH), cities (Washington, DC), states (Illinois), countries (Bulgaria) or zip codes (40258).

Time Change between and  


Time difference

Travel Math provides an online time zone converter for places all over the world. You can enter airports, cities, states, countries, or zip codes to find the time difference between any two locations. The calculator will automatically adjust for daylight saving time (DST) in the summer. You can use it as a meeting planner or a scheduler to find the best time to make international phone calls. World time zones have a positive or negative offset computed from Coordinated Universal Time (UTC), or Greenwich Mean Time (GMT). UTC has uniform seconds defined by International Atomic Time (TAI), with leap seconds announced at irregular intervals to compensate for the Earth's slowing rotation. The tz database or zoneinfo database uses the closest city, rather than the more common Eastern, Central, Mountain or Pacific time zones in the United States. Countries often change their daylight saving rules, so please help us stay current by letting us know if you find any pages that need updates.

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