Washington×Seoul
When the world meets at work.
Read the day in both zones.
If it's this in Washington, it's that in Seoul.
When it's 8:00 am in Washington, it's 9:00 pm in Seoul — night there, the same day.
When it's 10:00 am in Washington, it's 11:00 pm in Seoul — night there, the same day.
When it's 12:00 pm in Washington, it's 1:00 am in Seoul — late night there, the next day.
When it's 3:00 pm in Washington, it's 4:00 am in Seoul — late night there, the next day.
When it's 5:00 pm in Washington, it's 6:00 am in Seoul — morning there, the next day.
When it's 9:00 pm in Washington, it's 10:00 am in Seoul — late morning there, the next day.
Crossing the border. Money, language, plugs.
Money changes hands at the border: Washington uses the USD ($) and Seoul uses the KRW (₩). Language shifts too — English in Washington, Korean in Seoul. Cars drive on the right in both, so rentals feel familiar.
- Country
- United States
- Capital
- Washington, D.C.
- Currency
- United States dollar (USD · $)
- Language
- English
- Calling code
- +1
- Drives on
- Right
- Country
- South Korea
- Capital
- Seoul
- Currency
- South Korean won (KRW · ₩)
- Language
- Korean
- Calling code
- +82
- Drives on
- Right
Quick answers. Before you book the call.
What's the time difference between Washington and Seoul?
Washington is 13 hours ahead of Seoul. Washington runs on GMT-4 and Seoul on GMT+9. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.
When it's 10 am in Washington, what time is it in Seoul?
10:00 am in Washington is 11:00 pm in Seoul on the same day — night there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When it's 3 pm in Washington, what time is it in Seoul?
3:00 pm in Washington is 4:00 am in Seoul the next day — late night there. The same shift applies to any hour; the quick-conversion cards and the 24-hour table above cover the full day.
When's the best time to schedule a meeting?
Standard 09:00–17:00 workdays don't intersect. Most teams compromise with one side meeting early (before 09:00) or late (after 17:00).
Does daylight saving time change the difference?
Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.
How far is Washington from Seoul?
About 11,164 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 13h 38m, not counting airport time, winds, or routing around restricted airspace.
Can I send this meeting time as a calendar invite?
Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.
What currency do Washington and Seoul use?
Washington uses the United States dollar (USD, $); Seoul uses the South Korean won (KRW, ₩). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.
How do I call Washington from Seoul?
Dial the international prefix used by your carrier (often 00), then +1, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.
What language is spoken in Washington and Seoul?
Washington primarily speaks English; Seoul speaks Korean. English is widely used in business contexts in major cities of both, but written contracts may need translation.
Do Washington and Seoul drive on the same side of the road?
Yes — both drive on the right. Rental cars feel identical between the two.