KST to HKT
-1hKST
KSTSOURCEHKT
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.
Everything You Need to Know About KST and HKT Time
KST runs on Korea Standard Time (KST) at UTC+09:00. HKT runs on Hong Kong Time (HKT) at UTC+08:00. That puts KST 1 hour behind HKT — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in KST it is 8:00 AM in HKT. Midnight in KST is 11:00 PM in HKT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to HKT time conversion table
| KST (KST) | HKT (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 KST to HKT time
- Scheduling a call from KST to HKT: a 10:00 AM start in KST lands at 9:00 AM in HKT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both KST and HKT 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.
- Booking travel or deliveries: tracking HKT local time against KST keeps pickup windows and arrival estimates honest across the -1h offset.
- 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 KST and need HKT 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 KST and HKT
Both KST and HKT 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
KST and HKT share 7 hours of working-hours overlap (10:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
KST is 1 hour behind HKT (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 KST and HKT?
KST (KST, UTC+09:00) is 1 hour behind HKT (HKT, UTC+08:00). The gap is currently -1h.
How do I convert KST time to HKT time?
Add -1h to KST local time. For example, 9:00 AM in KST is 8:00 AM in HKT.
What time is it in HKT right now?
HKT 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 KST.
What is the best time to call HKT from KST?
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, KST or HKT?
KST is 1 hour behind HKT. When it is 12:00 PM in KST it is 11:00 AM in HKT.
Does daylight saving time affect the KST–HKT difference?
Neither zone observes daylight saving time, so the -1h offset between KST and HKT is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and HKT?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between KST and HKT?
HKT is -1h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is HKT in?
HKT operates on its local timezone.
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 KST, what time is it in HKT?
When it is 12:00 AM (midnight) in KST (KST), it is -1h later in HKT (HKT).
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See every conversion from KST →·See every conversion from HKT →