Hong Kong to Vienna
-6hHong Kong
HKTSOURCEVienna
CESTGreen rows indicate typical business hours (9 AM - 5 PM)
HKT and CEST on the World Map
The map below highlights the HKT (Hong Kong Time) and CEST (Central European Time) timezone regions across the globe.
HKT – Hong Kong Time
UTC+08:00Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.
- •Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979.
- •HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
- •The Hong Kong Stock Exchange opens at 09:30 HKT.
- •Hong Kong Time does not change with the seasons, so its gap to other zones is fixed.
CET – Central European Time
UTC+01:00Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.
- •CET covers more European countries than any other time zone.
- •Spain uses CET despite being geographically aligned with GMT/WET.
- •The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
- •Over 500 million people live in the CET time zone.
- •France moved to CET during the German occupation in WWII and never switched back.
About Hong Kong
WikipediaHong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
The city has one of the world's most efficient and affordable public transit systems.
About Vienna
WikipediaVienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.
Vienna has more than 50 theaters and opera houses.
Hong Kong to Vienna Time Difference – Complete Guide
Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. Vienna runs on Central European Summer Time (CEST) at UTC+02:00, also currently on daylight saving time. That puts Hong Kong 6 hours behind Vienna — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Hong Kong it is 3:00 AM in Vienna. Midnight in Hong Kong is 6:00 PM in Vienna.Vienna observes daylight saving time while Hong Kong does not, so the gap narrows or widens by an hour part of the year.
Hong Kong to Vienna time conversion table
| Hong Kong (HKT) | Vienna (CEST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert Hong Kong to Vienna time
- Scheduling a call from Hong Kong to Vienna: a 10:00 AM start in Hong Kong lands at 4:00 AM in Vienna, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Hong Kong and Vienna are inside the 9-to-5 working day between 3:00 PM and 5:00 PM HKT time (9:00 AM–11:00 AM CEST). That is roughly 2 hours of usable overlap.
- Watching a live event or market open: Hong Kong viewers need 3:00 AM in Vienna to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to Hong Kong.
- Always state the zone abbreviation, not just the hour. "3:00 PM HKT" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM HKT as the recurring meeting window if you work primarily from Hong Kong and need Vienna colleagues present.
- Vienna: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
About HKT (Hong Kong Time)
Hong Kong Time (HKT) is fixed at UTC+08:00 all year and does not observe daylight saving time. Hong Kong last used summer time in 1979 and has kept a single offset since. HKT shares the UTC+08:00 offset with China Standard Time, Singapore Time, Malaysian Time, Philippine Time and Australian Western Standard Time, but is listed separately because Hong Kong maintains its own timekeeping authority. As a major financial centre, Hong Kong's trading hours set the rhythm for markets across Asia, opening at 09:30 HKT which is 01:30 in London and 20:30 the previous evening in New York.
About CET (Central European Time)
Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.
Best time to call between Hong Kong and Vienna
Both Hong Kong and Vienna sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM HKT, which is 9:00 AM–11:00 AM CEST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Hong Kong and Vienna overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Hong Kong is 6 hours behind Vienna (HKT UTC+08:00 → CEST UTC+02:00). The shared working window is 3:00 PM–5:00 PM HKT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Hong Kong
Does not observe DST
Vienna
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
Clocks fall back on Sun, Oct 25, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Hong Kong and Vienna?
Hong Kong (HKT, UTC+08:00) is 6 hours behind Vienna (CEST, UTC+02:00). The gap is currently -6h.
How do I convert Hong Kong time to Vienna time?
Add -6h to Hong Kong local time. For example, 9:00 AM in Hong Kong is 3:00 AM in Vienna.
What time is it in Vienna right now?
Vienna uses CEST at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from Hong Kong.
What is the best time to call Vienna from Hong Kong?
Call between 3:00 PM and 5:00 PM HKT — that maps to 9:00 AM–11:00 AM CEST and keeps both parties inside the working day.
Which is behind, Hong Kong or Vienna?
Hong Kong is 6 hours behind Vienna. When it is 12:00 PM in Hong Kong it is 6:00 AM in Vienna.
Do Hong Kong and Vienna use different time zones?
Hong Kong (Hong Kong) uses HKT at UTC+08:00, while Vienna (Austria) uses CEST at UTC+02:00. The IANA identifiers are Asia/Hong_Kong and Europe/Vienna.
Does daylight saving time affect the Hong Kong–Vienna difference?
Yes at the moment: Vienna is on daylight saving time and Hong Kong is not, so the -6h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Hong Kong's time zone?
HKT also covers Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
Which countries use HKT, Hong Kong's zone?
HKT is used in Hong Kong SAR.
Is there a day difference between Hong Kong and Vienna?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Hong Kong and Vienna?
Vienna is -6h from Hong Kong.
What timezone is Hong Kong in?
Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
What timezone is Vienna in?
Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.
What are the business hours in Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
What are the business hours in Vienna?
Standard business hours in Vienna are 8:00 AM - 5:00 PM CET.
What is the best time to schedule a call between Hong Kong and Vienna?
The best overlap for a call is when both cities are in business hours. Hong Kong works 9:00 AM - 6:00 PM HKT and Vienna works 8:00 AM - 5:00 PM CET (-6h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Hong Kong and Vienna?
Hong Kong uses HKD (HK$) while Vienna uses EUR (€). Check current exchange rates when planning travel or business between these cities.
How do Hong Kong and Vienna compare in size?
Hong Kong has a population of approximately 7.5 million (metro: 7.5 million), while Vienna has approximately 1.9 million (metro: 2.9 million).
What are the major landmarks in Hong Kong and Vienna?
Hong Kong is known for Victoria Peak, Tian Tan Buddha, Victoria Harbour. Vienna is famous for Schönbrunn Palace, St. Stephen's Cathedral, Belvedere Palace.
Do Hong Kong and Vienna have stock exchanges?
Yes. Hong Kong has the HKEX (Hong Kong Stock Exchange) and Vienna has the Wiener Börse. The -6h time difference affects trading hour overlaps between these exchanges.
Which countries use HKT (Hong Kong Time)?
HKT is used in Hong Kong SAR.
Does HKT observe daylight saving time?
No, HKT does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about HKT?
Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979. HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
Which cities are in the CET timezone?
Major cities in the CET timezone include Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw.
What is the UTC offset for CET?
Central European Time (CET) is at UTC+01:00. During daylight saving time, it shifts to CEST.
What should I know about the CET timezone?
CET covers more European countries than any other time zone. Spain uses CET despite being geographically aligned with GMT/WET.
When is it midnight in Hong Kong, what time is it in Vienna?
When it is 12:00 AM (midnight) in Hong Kong (HKT), it is -6h later in Vienna (CET).
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