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 Greater Sudbury vs Guangzhou

Greater Sudbury keeps EDT (UTC−4) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 12 hours ahead of Greater Sudbury; the rows below read both clocks live.

The working day, side by side

The working days do not meet. there is no working-hour overlap with Guangzhou — the nearest workable window is 05:00–06:00 your time (17:00 there).

Greater Sudbury and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Greater Sudbury01:00 in Greater Sudbury02:00 in Greater Sudbury03:00 in Greater Sudbury04:00 in Greater Sudbury05:00 in Greater Sudbury06:00 in Greater Sudbury07:00 in Greater Sudbury08:00 in Greater Sudbury09:00 in Greater Sudbury10:00 in Greater Sudbury11:00 in Greater Sudbury12:00 in Greater Sudbury13:00 in Greater Sudbury14:00 in Greater Sudbury15:00 in Greater Sudbury16:00 in Greater Sudbury17:00 in Greater Sudbury18:00 in Greater Sudbury19:00 in Greater Sudbury20:00 in Greater Sudbury21:00 in Greater Sudbury22:00 in Greater Sudbury23:00 in Greater Sudbury
Greater Sudbury——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

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

Best hours to call

there is no working-hour overlap with Guangzhou — the nearest workable window is 05:00–06:00 your time (17:00 there).

Where daylight saving pulls them apart

Greater Sudbury next changes on Sunday 1 November 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 Greater Sudbury?

Guangzhou is 12 hours ahead of Greater Sudbury right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Greater Sudbury and Guangzhou?

There is no hour inside working hours in both cities. 05:00–06:00 your time (17:00 there) is the cheapest compromise, and one side is taking a shoulder hour.

Do Greater Sudbury 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.