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Global ClockTime zone converter & meeting planner
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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 Guangzhou vs Sumedang

Guangzhou keeps CST (UTC+8) and Sumedang keeps WIB (UTC+7) today. Sumedang is 1 hour 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: 09:00–17:00 in Sumedang (10:00–18:00 your time).

Guangzhou and Sumedang 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
Sumedang——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Guangzhou and Sumedang

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, Sumedang and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

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

Where daylight saving pulls them apart

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

Also useful

Common questions

How many hours ahead is Sumedang of Guangzhou?

Sumedang is 1 hour 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 Sumedang?

Any hour in 10:00–18:00 Guangzhou time is inside working hours in both cities.

Do Guangzhou and Sumedang change clocks on the same date?

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