Seoul to Hong Kong
-1hSeoul
KSTSOURCEHong Kong
HKTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and HKT on the World Map
The map below highlights the KST (Korea Standard Time) and HKT (Hong Kong 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).
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.
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 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.
Seoul vs Hong Kong: Offsets, DST and Best Call Times
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. That puts Seoul 1 hour behind Hong Kong — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 8:00 AM in Hong Kong. Midnight in Seoul is 11:00 PM in Hong Kong. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to Hong Kong time conversion table
| Seoul (KST) | Hong Kong (HKT) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert Seoul to Hong Kong time
- Scheduling a call from Seoul to Hong Kong: a 10:00 AM start in Seoul lands at 9:00 AM in Hong Kong, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Seoul and Hong Kong are inside the 9-to-5 working day between 10:00 AM and 5:00 PM KST time (9:00 AM–4:00 PM HKT). That is roughly 7 hours of usable overlap.
- Watching a live event or market open: Seoul viewers need 8:00 AM in Hong Kong to catch a 9:00 AM start there, and 1:00 AM if the event is anchored to Seoul.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from Seoul and need Hong Kong colleagues present.
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 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.
Best time to call between Seoul and Hong Kong
Both Seoul and Hong Kong sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM KST, which is 9:00 AM–4:00 PM HKT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Seoul and Hong Kong share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
Seoul is 1 hour behind Hong Kong (KST UTC+09:00 → HKT UTC+08:00). The shared working window is 10:00 AM–5:00 PM KST. Remember to re-check around daylight-saving transitions.
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 Hong Kong?
Seoul (KST, UTC+09:00) is 1 hour behind Hong Kong (HKT, UTC+08:00). The gap is currently -1h.
How do I convert Seoul time to Hong Kong time?
Add -1h to Seoul local time. For example, 9:00 AM in Seoul is 8:00 AM in Hong Kong.
What time is it in Hong Kong right now?
Hong Kong uses HKT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Seoul.
What is the best time to call Hong Kong from Seoul?
Call between 10:00 AM and 5:00 PM KST — that maps to 9:00 AM–4:00 PM HKT and keeps both parties inside the working day.
Which is behind, Seoul or Hong Kong?
Seoul is 1 hour behind Hong Kong. When it is 12:00 PM in Seoul it is 11:00 AM in Hong Kong.
Do Seoul and Hong Kong use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Hong Kong (Hong Kong) uses HKT at UTC+08:00. The IANA identifiers are Asia/Seoul and Asia/Hong_Kong.
Does daylight saving time affect the Seoul–Hong Kong difference?
Neither zone observes daylight saving time, so the -1h offset between Seoul and Hong Kong is fixed all year.
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 Hong Kong?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between Seoul and Hong Kong?
Hong Kong is -1h 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 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 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 Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
What is the best time to schedule a call between Seoul and Hong Kong?
The best overlap for a call is when both cities are in business hours. Seoul works 9:00 AM - 6:00 PM KST and Hong Kong works 9:00 AM - 6:00 PM HKT (-1h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Seoul and Hong Kong?
Seoul uses KRW (₩) while Hong Kong uses HKD (HK$). Check current exchange rates when planning travel or business between these cities.
How do Seoul and Hong Kong compare in size?
Seoul has a population of approximately 9.7 million (metro: 25.5 million), while Hong Kong has approximately 7.5 million (metro: 7.5 million).
What are the major landmarks in Seoul and Hong Kong?
Seoul is known for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village. Hong Kong is famous for Victoria Peak, Tian Tan Buddha, Victoria Harbour.
Do Seoul and Hong Kong have stock exchanges?
Yes. Seoul has the KRX (Korea Exchange) and Hong Kong has the HKEX (Hong Kong Stock Exchange). The -1h 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 HKT timezone?
Major cities in the HKT timezone include Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
What is the UTC offset for HKT?
Hong Kong Time (HKT) is at UTC+08:00.
What should I know about the HKT timezone?
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.
When is it midnight in Seoul, what time is it in Hong Kong?
When it is 12:00 AM (midnight) in Seoul (KST), it is -1h later in Hong Kong (HKT).
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