Time in Kaesŏng, North Korea

Time zone: KST (UTC/GMT +09:00) — Asia/Pyongyang

Local time here is KST, which sits 9 hours ahead of UTC, written UTC+09:00. The canonical zone name is Asia/Pyongyang, and that is what to pick from a time zone dropdown.

No seasonal adjustment applies in Kaesŏng — UTC+09:00 is constant, which is worth remembering when a partner city moves its clocks twice a year.

Around 338,155 people live in Kaesŏng, making it the 5th largest of the 15 North Korea cities covered here.

Current gap between Kaesŏng and cities people most often need to coordinate with. These figures already account for daylight saving where it applies.

Assuming a 09:00–17:00 day at both ends, these windows (in Kaesŏng local time) fall inside working hours for both cities.

No shared working window exists with New York, Los Angeles, London or Sao Paulo, so those calls have to sit outside somebody's normal hours.

Same zone, same time — each of these sits on Asia/Pyongyang alongside Kaesŏng, including through any clock change.

Hamhŭng Namp’o Sunch’ŏn Hŭngnam Wŏnsan Chongjin Sariwŏn Sinŭiju