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Global ClockTime zone converter & meeting planner
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Working hours
Start
09
End
18
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AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

Time in Shanghai vs Jeju City

Shanghai keeps CST (UTC+8) and Jeju City keeps KST (UTC+9) today. Jeju City is 1 hour ahead of Shanghai; the rows below read both clocks live.

The working day, side by side

Hours shaded in both rows are inside working hours in both cities: 10:00–18:00 in Jeju City (09:00–17:00 your time).

Shanghai and Jeju City hour by hour, with the working-hour overlap shaded
City00:00 in Shanghai01:00 in Shanghai02:00 in Shanghai03:00 in Shanghai04:00 in Shanghai05:00 in Shanghai06:00 in Shanghai07:00 in Shanghai08:00 in Shanghai09:00 in Shanghai10:00 in Shanghai11:00 in Shanghai12:00 in Shanghai13:00 in Shanghai14:00 in Shanghai15:00 in Shanghai16:00 in Shanghai17:00 in Shanghai18:00 in Shanghai19:00 in Shanghai20:00 in Shanghai21:00 in Shanghai22:00 in Shanghai23:00 in Shanghai
Shanghai——000102030405060708091011121314151617181920212223
Jeju City——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Shanghai and Jeju City

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Shanghai, Jeju City and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Shanghai
Inside working hours on both sides
10:00 in Jeju City
10:00 in Shanghai
Inside working hours on both sides
11:00 in Jeju City
11:00 in Shanghai
Inside working hours on both sides
12:00 in Jeju City
12:00 in Shanghai
Inside working hours on both sides
13:00 in Jeju City

Where daylight saving pulls them apart

Neither Shanghai nor Jeju City changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Jeju City of Shanghai?

Jeju City is 1 hour ahead of Shanghai right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Shanghai and Jeju City?

Any hour in 09:00–17:00 Shanghai time is inside working hours in both cities.

Do Shanghai and Jeju City change clocks on the same date?

Neither city changes its clocks, so the gap between them never moves.