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Global ClockTime zone converter & meeting planner
SETTINGS
Clock
Working hours
Start
09
End
18
Theme

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 Porto

Shanghai keeps CST (UTC+8) and Porto keeps WEST (UTC+1) today. Porto is 7 hours behind 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: 09:00–11:00 in Porto (16:00–18:00 your time).

Shanghai and Porto 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
Porto——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Shanghai and Porto

Best hours to call

16:00 in Shanghai
Inside working hours on both sides
09:00 in Porto
17:00 in Shanghai
Inside working hours on both sides
10:00 in Porto

Where daylight saving pulls them apart

Porto next changes on Sunday 25 October 2026. Between those two dates the gap between the cities is an hour different from the one shown above — which is exactly when a recurring meeting drifts. Every date we track is on the daylight saving page.

Also useful

Common questions

How many hours ahead is Porto of Shanghai?

Porto is 7 hours behind 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 Porto?

Any hour in 16:00–18:00 Shanghai time is inside working hours in both cities.

Do Shanghai and Porto change clocks on the same date?

Only one of them does, so the gap between them changes twice a year even though neither city moved relative to the sun.