Seoul to Santo Tomé time converter

Santo Tomé is 12 hours behind Seoul. When it is 9:00 AM in Seoul, it is 9:00 PM (Tue, Oct 20) in Santo Tomé.

Seoul KST

Wednesday, October 21, 2026

Santo Tomé ART

Wednesday, October 21, 2026

Seoul
South Korea
Wed, Oct 21
KSTUTC+9
Santo Tomé
Argentina
Wed, Oct 21
ARTUTC-3-12h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Santo Tomé conversion table

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

SeoulSanto Tomé
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 Santo Tomé): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference stays 12 hours all year.

Distance

Seoul and Santo Tomé are 19,050 km (11,837 miles) apart in a straight line.

More conversions

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New York to Santo ToméLondon to Santo ToméLos Angeles to Santo ToméChicago to Santo ToméToronto to Santo ToméSão Paulo to Santo ToméParis to Santo ToméBerlin to Santo ToméMoscow to Santo ToméDubai to Santo ToméNew Delhi to Santo ToméBangkok to Santo Tomé

Questions and answers

What is the time difference between Seoul and Santo Tomé?

Santo Tomé is 12 hours behind Seoul.

What time is it in Santo Tomé when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 9:00 PM (Tue, Oct 20) in Santo Tomé.

When is the best time to call Santo Tomé 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 Santo Tomé): working hours on one side, early or late on the other.

Does the time difference between Seoul and Santo Tomé change?

No. The difference stays 12 hours all year.