Hong Kong is usually 6 hours ahead of Vienna. Vienna observes daylight saving time and Hong Kong does not, so the difference shifts by an hour around the changeovers.

Hong KongVienna

Sunrise 6:03 AMSunset 6:53 PM(local)

Sunrise 5:55 AMSunset 8:04 PM(local)

Vienna: daylight saving timeNow UTC+2. Next change: October 25, 2026 β€” clocks go back 1 hour.
Hong KongUTC+8
ViennaUTC+2

πŸ‡­πŸ‡° Hong Kong

Dialing code+852
Population7,396,076
Coordinates22.28Β°N, 114.17Β°E
Elevation60 m

πŸ‡¦πŸ‡Ή Vienna

Dialing code+43
Population1,691,468
Coordinates48.21Β°N, 16.37Β°E
Elevation171 m

Best time for a call: 15:00–18:00 in Hong KongAdd to calendar

Working hours assumed 9:00–18:00.

Frequently asked questions

What is the time difference between Hong Kong and Vienna?
Hong Kong is 6 hours ahead of Vienna. Use the side-by-side clocks and the day/night strips above to convert any hour between them.
When is the best time to call between Hong Kong and Vienna?
The best window to call is 15:00–18:00 Hong Kong time, when working hours overlap in both cities. Pick an hour on the strips to add it to your calendar.
Why does the time difference between Hong Kong and Vienna change?
Because at least one of Hong Kong and Vienna observes daylight saving time, the difference shifts by an hour when one city changes its clocks and the other has not yet (or does not).