Time in Hong Kong vs Tehran
Hong Kong keeps HKT (UTC+8) and Tehran keeps UTC+3:30 (UTC+3:30) today. Tehran is 4½ hours behind Hong Kong; 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: 09:00–14:00 in Tehran (13:00–18:00 your time).
| City | 00:00 in Hong Kong | 01:00 in Hong Kong | 02:00 in Hong Kong | 03:00 in Hong Kong | 04:00 in Hong Kong | 05:00 in Hong Kong | 06:00 in Hong Kong | 07:00 in Hong Kong | 08:00 in Hong Kong | 09:00 in Hong Kong | 10:00 in Hong Kong | 11:00 in Hong Kong | 12:00 in Hong Kong | 13:00 in Hong Kong | 14:00 in Hong Kong | 15:00 in Hong Kong | 16:00 in Hong Kong | 17:00 in Hong Kong | 18:00 in Hong Kong | 19:00 in Hong Kong | 20:00 in Hong Kong | 21:00 in Hong Kong | 22:00 in Hong Kong | 23:00 in Hong Kong |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hong Kong—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Tehran—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with Hong Kong and Tehran
Best hours to call
13:00 in Hong Kong
Inside working hours on both sides
09:00 in Tehran
14:00 in Hong Kong
Inside working hours on both sides
10:00 in Tehran
15:00 in Hong Kong
Inside working hours on both sides
11:00 in Tehran
16:00 in Hong Kong
Inside working hours on both sides
12:00 in Tehran
Where daylight saving pulls them apart
Neither Hong Kong nor Tehran changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Tehran of Hong Kong?
Tehran is 4½ hours behind Hong Kong right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Hong Kong and Tehran?
Any hour in 13:00–18:00 Hong Kong time is inside working hours in both cities.
Do Hong Kong and Tehran change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.