Time in Yangsan, South Korea

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

Yangsan runs on KST. That places it 9 hours ahead of UTC (UTC+09:00); in a calendar, server config or booking form, select Asia/Seoul.

Daylight saving is not observed here, so UTC+09:00 is year-round. Any seasonal drift you notice against another city comes from that city, not from Yangsan.

Yangsan has roughly 342,371 residents and ranks 20th by population among the South Korea cities on this site.

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

Overlap of a normal working day, shown in Yangsan time — outside these windows one side is off the clock.

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/Seoul alongside Yangsan, including through any clock change.

Goyang-si Seongnam-si Changwon Bucheon-si Cheongju-si Ansan-si Cheonan Jeonju