Seoul to Vienna
-7hSeoul
KSTSOURCEVienna
CESTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and CEST on the World Map
The map below highlights the KST (Korea Standard Time) and CEST (Central European Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
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 Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
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.
Comparing Time Zones: Seoul and Vienna
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Vienna runs on Central European Summer Time (CEST) at UTC+02:00, also currently on daylight saving time. That puts Seoul 7 hours behind Vienna — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 2:00 AM in Vienna. Midnight in Seoul is 5:00 PM in Vienna.Vienna observes daylight saving time while Seoul does not, so the gap narrows or widens by an hour part of the year.
Seoul to Vienna time conversion table
| Seoul (KST) | Vienna (CEST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert Seoul to Vienna time
- Scheduling a call from Seoul to Vienna: a 10:00 AM start in Seoul lands at 3:00 AM in Vienna, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Seoul and Vienna are inside the 9-to-5 working day between 4:00 PM and 5:00 PM KST time (9:00 AM–10:00 AM CEST). That is roughly 1 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Seoul is 1:00 PM in Vienna makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM KST as the recurring meeting window if you work primarily from Seoul 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 KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
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 Seoul and Vienna
Both Seoul and Vienna sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM KST, which is 9:00 AM–10:00 AM CEST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Seoul and Vienna overlap for only 60 minutes (4:00 PM–5:00 PM KST), so meetings have to be booked precisely.
Seoul is 7 hours behind Vienna (KST UTC+09:00 → CEST UTC+02:00). The shared working window is 4:00 PM–5:00 PM KST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Seoul
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 Seoul and Vienna?
Seoul (KST, UTC+09:00) is 7 hours behind Vienna (CEST, UTC+02:00). The gap is currently -7h.
How do I convert Seoul time to Vienna time?
Add -7h to Seoul local time. For example, 9:00 AM in Seoul is 2:00 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 -7h offset from Seoul.
What is the best time to call Vienna from Seoul?
Call between 4:00 PM and 5:00 PM KST — that maps to 9:00 AM–10:00 AM CEST and keeps both parties inside the working day.
Which is behind, Seoul or Vienna?
Seoul is 7 hours behind Vienna. When it is 12:00 PM in Seoul it is 5:00 AM in Vienna.
Do Seoul and Vienna use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Vienna (Austria) uses CEST at UTC+02:00. The IANA identifiers are Asia/Seoul and Europe/Vienna.
Does daylight saving time affect the Seoul–Vienna difference?
Yes at the moment: Vienna is on daylight saving time and Seoul is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and Vienna?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between Seoul and Vienna?
Vienna is -7h from Seoul.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
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 Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
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 Seoul and Vienna?
The best overlap for a call is when both cities are in business hours. Seoul works 9:00 AM - 6:00 PM KST and Vienna works 8:00 AM - 5:00 PM CET (-7h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Seoul and Vienna?
Seoul uses KRW (₩) while Vienna uses EUR (€). Check current exchange rates when planning travel or business between these cities.
How do Seoul and Vienna compare in size?
Seoul has a population of approximately 9.7 million (metro: 25.5 million), while Vienna has approximately 1.9 million (metro: 2.9 million).
What are the major landmarks in Seoul and Vienna?
Seoul is known for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village. Vienna is famous for Schönbrunn Palace, St. Stephen's Cathedral, Belvedere Palace.
Do Seoul and Vienna have stock exchanges?
Yes. Seoul has the KRX (Korea Exchange) and Vienna has the Wiener Börse. The -7h time difference affects trading hour overlaps between these exchanges.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
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 Seoul, what time is it in Vienna?
When it is 12:00 AM (midnight) in Seoul (KST), it is -7h later in Vienna (CET).
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