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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 Tehran vs Shenzhen

Tehran keeps UTC+3:30 (UTC+3:30) and Shenzhen keeps CST (UTC+8) today. Shenzhen is 4½ hours ahead of Tehran; 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: 14:00–18:00 in Shenzhen (09:00–13:00 your time).

Tehran and Shenzhen hour by hour, with the working-hour overlap shaded
City00:00 in Tehran01:00 in Tehran02:00 in Tehran03:00 in Tehran04:00 in Tehran05:00 in Tehran06:00 in Tehran07:00 in Tehran08:00 in Tehran09:00 in Tehran10:00 in Tehran11:00 in Tehran12:00 in Tehran13:00 in Tehran14:00 in Tehran15:00 in Tehran16:00 in Tehran17:00 in Tehran18:00 in Tehran19:00 in Tehran20:00 in Tehran21:00 in Tehran22:00 in Tehran23:00 in Tehran
Tehran——000102030405060708091011121314151617181920212223
Shenzhen——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Tehran and Shenzhen

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Tehran, Shenzhen and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Tehran
Inside working hours on both sides
14:00 in Shenzhen
10:00 in Tehran
Inside working hours on both sides
15:00 in Shenzhen
11:00 in Tehran
Inside working hours on both sides
16:00 in Shenzhen
12:00 in Tehran
Inside working hours on both sides
17:00 in Shenzhen

Where daylight saving pulls them apart

Neither Tehran nor Shenzhen changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Shenzhen of Tehran?

Shenzhen is 4½ hours ahead of Tehran right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Tehran and Shenzhen?

Any hour in 09:00–13:00 Tehran time is inside working hours in both cities.

Do Tehran and Shenzhen change clocks on the same date?

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