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Global ClockTime zone converter & meeting planner
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09
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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 Guangzhou vs Porto

Guangzhou keeps CST (UTC+8) and Porto keeps WEST (UTC+1) today. Porto is 7 hours behind Guangzhou; 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).

Guangzhou and Porto hour by hour, with the working-hour overlap shaded
City00:00 in Guangzhou01:00 in Guangzhou02:00 in Guangzhou03:00 in Guangzhou04:00 in Guangzhou05:00 in Guangzhou06:00 in Guangzhou07:00 in Guangzhou08:00 in Guangzhou09:00 in Guangzhou10:00 in Guangzhou11:00 in Guangzhou12:00 in Guangzhou13:00 in Guangzhou14:00 in Guangzhou15:00 in Guangzhou16:00 in Guangzhou17:00 in Guangzhou18:00 in Guangzhou19:00 in Guangzhou20:00 in Guangzhou21:00 in Guangzhou22:00 in Guangzhou23:00 in Guangzhou
Guangzhou——000102030405060708091011121314151617181920212223
Porto——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Guangzhou and Porto

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

Best hours to call

16:00 in Guangzhou
Inside working hours on both sides
09:00 in Porto
17:00 in Guangzhou
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 Guangzhou?

Porto is 7 hours behind Guangzhou right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Guangzhou and Porto?

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

Do Guangzhou 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.