Seoul to Oceanside time converter

Oceanside is 16 hours behind Seoul. When it is 9:00 AM in Seoul, it is 5:00 PM (Mon, Oct 19) in Oceanside.

Seoul KST

Tuesday, October 20, 2026

Oceanside PDT

Monday, October 19, 2026

Seoul
South Korea
Tue, Oct 20
KSTUTC+9
Oceanside
California, United States
Mon, Oct 19
PDTUTC-7-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Oceanside conversion table

Every hour of today in Seoul and the matching time in Oceanside. Light rows are typical working hours (9:00–18:00).

SeoulOceanside
12:00 AM8:00 AM−1 day
1:00 AM9:00 AM−1 day
2:00 AM10:00 AM−1 day
3:00 AM11:00 AM−1 day
4:00 AM12:00 PM−1 day
5:00 AM1:00 PM−1 day
6:00 AM2:00 PM−1 day
7:00 AM3:00 PM−1 day
8:00 AM4:00 PM−1 day
9:00 AM5:00 PM−1 day
10:00 AM6:00 PM−1 day
11:00 AM7:00 PM−1 day
12:00 PM8:00 PM−1 day
1:00 PM9:00 PM−1 day
2:00 PM10:00 PM−1 day
3:00 PM11:00 PM−1 day
4:00 PM12:00 AM
5:00 PM1:00 AM
6:00 PM2:00 AM
7:00 PM3:00 AM
8:00 PM4:00 AM
9:00 PM5:00 AM
10:00 PM6:00 AM
11:00 PM7:00 AM

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Oceanside).

Daylight saving time and the difference

The difference changes during the year because Seoul and Oceanside switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 20, 2027: -16h

Distance

Seoul and Oceanside are 9,710 km (6,034 miles) apart in a straight line.

More conversions

Oceanside to SeoulSeoul to New YorkSeoul to LondonSeoul to Los AngelesSeoul to ChicagoSeoul to TorontoSeoul to São PauloSeoul to ParisSeoul to BerlinSeoul to MoscowSeoul to DubaiSeoul to New DelhiSeoul to Bangkok
New York to OceansideLondon to OceansideLos Angeles to OceansideChicago to OceansideToronto to OceansideSão Paulo to OceansideParis to OceansideBerlin to OceansideMoscow to OceansideDubai to OceansideNew Delhi to OceansideBangkok to Oceanside

Questions and answers

What is the time difference between Seoul and Oceanside?

Oceanside is 16 hours behind Seoul.

What time is it in Oceanside when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 5:00 PM (Mon, Oct 19) in Oceanside.

When is the best time to call Oceanside from Seoul?

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Oceanside).

Does the time difference between Seoul and Oceanside change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.