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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 Porto Velho vs Guangzhou

Porto Velho keeps UTC−4 (UTC−4) and Guangzhou keeps CST (UTC+8) today. Guangzhou is 12 hours ahead of Porto Velho; 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).

Porto Velho and Guangzhou hour by hour, with the working-hour overlap shaded
City00:00 in Porto Velho01:00 in Porto Velho02:00 in Porto Velho03:00 in Porto Velho04:00 in Porto Velho05:00 in Porto Velho06:00 in Porto Velho07:00 in Porto Velho08:00 in Porto Velho09:00 in Porto Velho10:00 in Porto Velho11:00 in Porto Velho12:00 in Porto Velho13:00 in Porto Velho14:00 in Porto Velho15:00 in Porto Velho16:00 in Porto Velho17:00 in Porto Velho18:00 in Porto Velho19:00 in Porto Velho20:00 in Porto Velho21:00 in Porto Velho22:00 in Porto Velho23:00 in Porto Velho
Porto Velho——000102030405060708091011121314151617181920212223
Guangzhou——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Porto Velho 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 Porto Velho, 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

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

Also useful

Common questions

How many hours ahead is Guangzhou of Porto Velho?

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

What is the best time to call between Porto Velho 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 Porto Velho and Guangzhou change clocks on the same date?

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