Seoul

South Korea • Korea Standard Time

Time Zone

Seoul uses Korea Standard Time (KST), currently running at UTC+9 (year-round). South Korea abolished daylight saving time in 1988. KST (UTC+9) is fixed every day of the year.

Business & Commerce

Seoul, South Korea's capital, operates on Korea Standard Time (KST, UTC+9) year-round — South Korea abolished daylight saving time in 1988, settling on the fixed UTC+9 offset. KST is numerically identical to JST (Japan Standard Time), meaning Seoul and Tokyo share a common clock despite being separate nations with separately governed time systems. The Korea Exchange (KRX) is one of the world's top ten exchanges by derivatives and equities trading volume. South Korea's export-driven economy, anchored by Samsung, Hyundai-Kia, SK, and LG, makes KST a daily scheduling anchor for teams in electronics, semiconductors, and automotive industries worldwide. At UTC+9, Seoul is nine hours ahead of London and fourteen ahead of New York in winter — its full business day runs while the Americas are overnight, and its late afternoon just catches European early mornings.