Seoul to San Antonio time converter

San Antonio is 12 hours behind Seoul. When it is 9:00 AM in Seoul, it is 9:00 PM (Wed, Oct 21) in San Antonio.

Seoul KST

Thursday, October 22, 2026

San Antonio CLST

Wednesday, October 21, 2026

Seoul
South Korea
Thu, Oct 22
KSTUTC+9
San Antonio
Chile
Wed, Oct 21
CLSTUTC-3-12h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to San Antonio conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in Seoul (9:00 PM – 10:00 PM in San Antonio): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 22, 2026 – Apr 4, 2027: -12h
  • Apr 4, 2027 – Sep 5, 2027: -13h
  • Sep 5, 2027 – Oct 22, 2027: -12h

Distance

Seoul and San Antonio are 18,281 km (11,359 miles) apart in a straight line.

More conversions

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New York to San AntonioLondon to San AntonioLos Angeles to San AntonioChicago to San AntonioToronto to San AntonioSão Paulo to San AntonioParis to San AntonioBerlin to San AntonioMoscow to San AntonioDubai to San AntonioNew Delhi to San AntonioBangkok to San Antonio

Questions and answers

What is the time difference between Seoul and San Antonio?

San Antonio is 12 hours behind Seoul.

What time is it in San Antonio when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 9:00 PM (Wed, Oct 21) in San Antonio.

When is the best time to call San Antonio from Seoul?

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in Seoul (9:00 PM – 10:00 PM in San Antonio): working hours on one side, early or late on the other.

Does the time difference between Seoul and San Antonio change?

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