Skip to content
Global ClockTime zone converter & meeting planner
PAGES
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 Guangzhou vs Hanoi

Guangzhou keeps CST (UTC+8) and Hanoi keeps ICT (UTC+7) today. Hanoi 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 Hanoi (10:00–18:00 your time).

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

Do more with Guangzhou and Hanoi

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, Hanoi 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 Hanoi
11:00 in Guangzhou
Inside working hours on both sides
10:00 in Hanoi
12:00 in Guangzhou
Inside working hours on both sides
11:00 in Hanoi
13:00 in Guangzhou
Inside working hours on both sides
12:00 in Hanoi

Where daylight saving pulls them apart

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

Also useful

Common questions

How many hours ahead is Hanoi of Guangzhou?

Hanoi 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 Hanoi?

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

Do Guangzhou and Hanoi change clocks on the same date?

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