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Global ClockTime zone converter & meeting planner
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Working hours
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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 Portsmouth vs Guangzhou

Portsmouth keeps BST (UTC+1) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 7 hours ahead of Portsmouth; 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: 16:00–18:00 in Guangzhou (09:00–11:00 your time).

Portsmouth and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Portsmouth01:00 in Portsmouth02:00 in Portsmouth03:00 in Portsmouth04:00 in Portsmouth05:00 in Portsmouth06:00 in Portsmouth07:00 in Portsmouth08:00 in Portsmouth09:00 in Portsmouth10:00 in Portsmouth11:00 in Portsmouth12:00 in Portsmouth13:00 in Portsmouth14:00 in Portsmouth15:00 in Portsmouth16:00 in Portsmouth17:00 in Portsmouth18:00 in Portsmouth19:00 in Portsmouth20:00 in Portsmouth21:00 in Portsmouth22:00 in Portsmouth23:00 in Portsmouth
Portsmouth——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Portsmouth and Guangzhou

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

Best hours to call

09:00 in Portsmouth
Inside working hours on both sides
16:00 in Guangzhou
10:00 in Portsmouth
Inside working hours on both sides
17:00 in Guangzhou

Where daylight saving pulls them apart

Portsmouth 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 Guangzhou of Portsmouth?

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

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

Any hour in 09:00–11:00 Portsmouth time is inside working hours in both cities.

Do Portsmouth and Guangzhou 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.