About South Korea's Public Holiday Calendar
South Korea's two most important holidays are the three-day Seollal (Lunar New Year) and Chuseok (harvest festival), both set by the lunar calendar; each triggers heavy nationwide travel as millions return to their hometowns.
2026 is a year in which South Korea holds its nationwide local elections (for mayors, governors, and similar offices), held every four years, so June 3 is designated as a one-time official holiday specific to this election year.