Seoul to Simi Valley time converter

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

Seoul KST

Tuesday, October 20, 2026

Simi Valley PDT

Monday, October 19, 2026

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

Seoul to Simi Valley conversion table

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

SeoulSimi Valley
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 Simi Valley).

Daylight saving time and the difference

The difference changes during the year because Seoul and Simi Valley 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 Simi Valley are 9,533 km (5,924 miles) apart in a straight line.

More conversions

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Questions and answers

What is the time difference between Seoul and Simi Valley?

Simi Valley is 16 hours behind Seoul.

What time is it in Simi Valley when it is 9 AM in Seoul?

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

When is the best time to call Simi Valley from Seoul?

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

Does the time difference between Seoul and Simi Valley change?

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