Hong Kong to Tehran time
UTC+8 · UTC+8 → UTC+3:30 · UTC+3:30
Hong Kong is 4 hours 30 minutes ahead of Tehran
Hong Kong · UTC+8
Tuesday, 22 September 2026
Tehran · UTC+3:30
Tuesday, 22 September 2026
When are both sides at work?Each column is one hour of the day in the first city; the second row shows the same moment in the other city. Gold means office hours (09:00–18:00), dusk means awake but off work, night means asleep (23:00–07:00). Columns where both rows are gold are good meeting times.
0003060912151821
Hong KongUTC+8 · +08:00
0003060912151821
TehranUTC+3:30 · +03:30
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Shared working hours: 13:30–18:00 in Hong Kong is 09:00–13:30 in Tehran.
Working (09–18) Awake, off the clock Asleep (23–07)
Pick a time and share it
11:04 Tue 22 Sep Hong Kong = 06:34 Tue 22 Sep Tehran
Hour-by-hour conversion
| Hong KongEvery hour of today in the first city, with the matching time in the second. “Next day” means the calendar date is already tomorrow there. The highlighted row is right now. | Tehran | |
|---|---|---|
| 00:00 | 19:30prev. day | |
| 01:00 | 20:30prev. day | |
| 02:00 | 21:30prev. day | |
| 03:00 | 22:30prev. day | |
| 04:00 | 23:30prev. day | |
| 05:00 | 00:30 | |
| 06:00 | 01:30 | |
| 07:00 | 02:30 | |
| 08:00 | 03:30 | |
| 09:00 | 04:30 | |
| 10:00 | 05:30 | |
| 11:00 | 06:30 | Now |
| 12:00 | 07:30 | |
| 13:00 | 08:30 | |
| 14:00 | 09:30 | Both at work |
| 15:00 | 10:30 | Both at work |
| 16:00 | 11:30 | Both at work |
| 17:00 | 12:30 | Both at work |
| 18:00 | 13:30 | |
| 19:00 | 14:30 | |
| 20:00 | 15:30 | |
| 21:00 | 16:30 | |
| 22:00 | 17:30 | |
| 23:00 | 18:30 |
Planning between Hong Kong and Tehran
Hong Kong (Asia/Hong_Kong) is UTC+8 and Tehran (Asia/Tehran) is UTC+3:30 right now. Working hours are shown as 09:00–18:00 local, sleeping hours as 23:00–07:00.
- 09:00 in Hong Kong is 04:30 in Tehran
- 12:00 in Hong Kong is 07:30 in Tehran
- 15:00 in Hong Kong is 10:30 in Tehran
- 18:00 in Hong Kong is 13:30 in Tehran
Reverse: Tehran to Hong Kong. Or open both in the meeting planner with more cities.