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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 Phnom Penh vs Guangzhou

Phnom Penh keeps ICT (UTC+7) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 1 hour ahead of Phnom Penh; 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 Guangzhou (09:00–17:00 your time).

Phnom Penh and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Phnom Penh01:00 in Phnom Penh02:00 in Phnom Penh03:00 in Phnom Penh04:00 in Phnom Penh05:00 in Phnom Penh06:00 in Phnom Penh07:00 in Phnom Penh08:00 in Phnom Penh09:00 in Phnom Penh10:00 in Phnom Penh11:00 in Phnom Penh12:00 in Phnom Penh13:00 in Phnom Penh14:00 in Phnom Penh15:00 in Phnom Penh16:00 in Phnom Penh17:00 in Phnom Penh18:00 in Phnom Penh19:00 in Phnom Penh20:00 in Phnom Penh21:00 in Phnom Penh22:00 in Phnom Penh23:00 in Phnom Penh
Phnom Penh——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Phnom Penh 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 Phnom Penh, Guangzhou and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Phnom Penh
Inside working hours on both sides
10:00 in Guangzhou
10:00 in Phnom Penh
Inside working hours on both sides
11:00 in Guangzhou
11:00 in Phnom Penh
Inside working hours on both sides
12:00 in Guangzhou
12:00 in Phnom Penh
Inside working hours on both sides
13:00 in Guangzhou

Where daylight saving pulls them apart

Neither Phnom Penh nor Guangzhou changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Guangzhou of Phnom Penh?

Guangzhou is 1 hour ahead of Phnom Penh right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Phnom Penh and Guangzhou?

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

Do Phnom Penh and Guangzhou change clocks on the same date?

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