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Global ClockTime zone converter & meeting planner
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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 San Juan vs Guangzhou

San Juan keeps UTC−3 (UTC−3) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 11 hours ahead of San Juan; 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 06:00–07:00 your time (17:00 there).

San Juan and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in San Juan01:00 in San Juan02:00 in San Juan03:00 in San Juan04:00 in San Juan05:00 in San Juan06:00 in San Juan07:00 in San Juan08:00 in San Juan09:00 in San Juan10:00 in San Juan11:00 in San Juan12:00 in San Juan13:00 in San Juan14:00 in San Juan15:00 in San Juan16:00 in San Juan17:00 in San Juan18:00 in San Juan19:00 in San Juan20:00 in San Juan21:00 in San Juan22:00 in San Juan23:00 in San Juan
San Juan——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with San Juan 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 San Juan, 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 06:00–07:00 your time (17:00 there).

Where daylight saving pulls them apart

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

Also useful

Common questions

How many hours ahead is Guangzhou of San Juan?

Guangzhou is 11 hours ahead of San Juan right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between San Juan and Guangzhou?

There is no hour inside working hours in both cities. 06:00–07:00 your time (17:00 there) is the cheapest compromise, and one side is taking a shoulder hour.

Do San Juan and Guangzhou change clocks on the same date?

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