Seoul operates on Korea Standard Time (KST), which is UTC+9 year-round. South Korea shares this offset with Japan, and the two countries' financial markets operate on nearly identical schedules — useful for investors tracking both the KOSPI and Nikkei indices.
The Korea Exchange (KRX) operates from 9:00 AM to 3:30 PM KST, Monday through Friday. Seoul is a global hub for semiconductors, electronics, and automotive manufacturing, with companies like Samsung, SK Hynix, and Hyundai headquartered in the metropolitan area.
For scheduling with Western counterparts, Seoul is 14 hours ahead of New York (EST) and 9 hours ahead of London (GMT). Late afternoon in Seoul (4:00–6:00 PM KST) can catch early morning meetings on the US East Coast during standard time.
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