Visiting Korea: time zone and jet lag, explained
Heading to Korea? Here's the one time zone you'll be on, how big the jump is from home, and simple ways to beat the jet lag.
One time zone, all trip
Korea uses a single nationwide clock — Korea Standard Time (KST), UTC+9 — and it does not observe daylight saving. Whether you land in Seoul, Busan or Jeju, and whenever you visit, the clock is the same and never springs forward or back during your stay. That's one less thing to track on the trip.
The jump from home
How big the change feels depends entirely on where you're flying from, since Korea's side never moves. Korea is many hours ahead of the Americas and Europe and close to the rest of East Asia. To see the exact gap for your city, use the home-page converter or read how many hours ahead Korea is for a full reference table.
Beating the jet lag
A few simple habits go a long way. In the days before you fly, nudge your sleep an hour or two toward Korea time. On arrival, get onto the local schedule right away — eat and sleep by Korea's clock rather than your home one, and try not to crash for a long nap on your first afternoon. Daylight helps your body reset, so get outside during the day, stay hydrated, and go easy on caffeine late in the evening.
Everyday time basics
Koreans often use the 24-hour clock for schedules, transport and tickets, so a train at "18:00" is 6 PM. Shops and cafés commonly run late into the evening, while banks and offices keep standard daytime hours. When you book tours, KTX trains or restaurant slots, they'll be in KST — the same fixed UTC+9 you're already on once you land.
Frequently asked
What time zone is Korea in?
Korea Standard Time, UTC+9, nationwide, with no daylight saving.
How bad is the jet lag to Korea?
Depends on your origin and direction; the bigger the time gap the longer the adjustment — see the difference for your city and shift your sleep toward Korea time.
Does Korea change clocks in summer?
No — KST stays on UTC+9 year-round.