Time Difference Between Hong Kong, China and Hanoi
Hong Kong, China is 1 hour ahead of Hanoi. Live local times, working-hour overlap and a 24-hour meeting suitability table, computed from the IANA time zone database in your browser.
Best time to meet
On a normal weekday the two cities share 8 hours of overlapping working time: 10:00–18:00 in Hong Kong, China, which is 09:00–17:00 in Hanoi. That is the window to protect for recurring meetings.
Next 24 hours
Scored against a 09:00–18:00 weekday working day in both cities. Updates live.
| Hong Kong, China | Hanoi | Suitability |
|---|---|---|
| Loading live table… | ||
Hong Kong, China working hours converted to Hanoi
| Hong Kong, China time | Hanoi time |
|---|---|
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 12:00 | 11:00 |
| 14:00 | 13:00 |
| 16:00 | 15:00 |
| 18:00 | 17:00 |
Based on a 09:00–18:00 working day and today's UTC offsets (UTC+8 and UTC+7).
Frequently asked questions
What is the time difference between Hong Kong, China and Hanoi?
Hong Kong, China is 1 hour ahead of Hanoi: UTC+8 versus UTC+7. Both figures include any daylight saving currently in force.
What is the best time to call from Hong Kong, China to Hanoi?
Aim for 10:00–18:00 in Hong Kong, China, which lands at 09:00–17:00 in Hanoi. Both sides stay inside a normal working day.
Does the overlap between Hong Kong, China and Hanoi change during the year?
Yes, whenever the two regions do not switch daylight saving on the same date — or one does not observe it at all. The window above is computed for today's rules; re-check it in the weeks after a clock change.