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Global ClockTime zone converter & meeting planner
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09
End
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 Constantine vs Guangzhou

Constantine keeps CET (UTC+1) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 7 hours ahead of Constantine; 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).

Constantine and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Constantine01:00 in Constantine02:00 in Constantine03:00 in Constantine04:00 in Constantine05:00 in Constantine06:00 in Constantine07:00 in Constantine08:00 in Constantine09:00 in Constantine10:00 in Constantine11:00 in Constantine12:00 in Constantine13:00 in Constantine14:00 in Constantine15:00 in Constantine16:00 in Constantine17:00 in Constantine18:00 in Constantine19:00 in Constantine20:00 in Constantine21:00 in Constantine22:00 in Constantine23:00 in Constantine
Constantine——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

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

Best hours to call

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

Where daylight saving pulls them apart

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

Also useful

Common questions

How many hours ahead is Guangzhou of Constantine?

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

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

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

Do Constantine and Guangzhou change clocks on the same date?

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