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Global ClockTime zone converter & meeting planner
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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 Piedras Negras vs Guangzhou

Piedras Negras keeps CDT (UTC−5) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 13 hours ahead of Piedras Negras; 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 17:00–18:00 your time (06:00 there).

Piedras Negras and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Piedras Negras01:00 in Piedras Negras02:00 in Piedras Negras03:00 in Piedras Negras04:00 in Piedras Negras05:00 in Piedras Negras06:00 in Piedras Negras07:00 in Piedras Negras08:00 in Piedras Negras09:00 in Piedras Negras10:00 in Piedras Negras11:00 in Piedras Negras12:00 in Piedras Negras13:00 in Piedras Negras14:00 in Piedras Negras15:00 in Piedras Negras16:00 in Piedras Negras17:00 in Piedras Negras18:00 in Piedras Negras19:00 in Piedras Negras20:00 in Piedras Negras21:00 in Piedras Negras22:00 in Piedras Negras23:00 in Piedras Negras
Piedras Negras——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Piedras Negras 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 Piedras Negras, 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 17:00–18:00 your time (06:00 there).

Where daylight saving pulls them apart

Piedras Negras 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 Piedras Negras?

Guangzhou is 13 hours ahead of Piedras Negras right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Piedras Negras and Guangzhou?

There is no hour inside working hours in both cities. 17:00–18:00 your time (06:00 there) is the cheapest compromise, and one side is taking a shoulder hour.

Do Piedras Negras 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.