Seoul to Mountain View time converter

Mountain View is 16 hours behind Seoul. When it is 9:00 AM in Seoul, it is 5:00 PM (Sun, Oct 18) in Mountain View.

Seoul KST

Monday, October 19, 2026

Mountain View PDT

Monday, October 19, 2026

South Korea
Mon, Oct 19
KSTUTC+9
California, United States
Mon, Oct 19
PDTUTC-7-16h
Finding your time zone…

8:32 PM in Seoul, Monday, October 19, 2026

Shared working hours (9:00–18:00)

Seoul to Mountain View conversion table

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

SeoulMountain View
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 Mountain View).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 19, 2027: -16h

Distance

Seoul and Mountain View are 9,080 km (5,642 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between Seoul and Mountain View?

Mountain View is 16 hours behind Seoul.

What time is it in Mountain View when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 5:00 PM (Sun, Oct 18) in Mountain View.

When is the best time to call Mountain View from Seoul?

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

Does the time difference between Seoul and Mountain View change?

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