Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between kst and hkt?
Korea Standard Time (kst) is UTC+9 and Hong Kong Time (hkt) is UTC+8. The difference between them is 1 hours.
Where is kst used?
Korea Standard Time (kst) is used in South Korea and surrounding regions. The IANA timezone identifier is Asia/Seoul.
Where is hkt used?
Hong Kong Time (hkt) is used in Hong Kong and surrounding regions. The IANA timezone identifier is Asia/Hong_Kong.
How do I convert kst to hkt?
Use the interactive converter above. Drag the time slider to any kst time and the hkt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
KST (Seoul) is 1 hour ahead of HKT (Hong Kong). At noon in KST (Seoul), your contact in HKT (Hong Kong) sees 11:00.
KST (Seoul) runs on Asia/Seoul; HKT (Hong Kong) runs on Asia/Hong_Kong. Together they are 1 hour apart.
Mutual working hours
KST (Seoul) and HKT (Hong Kong) share 7 hours of overlapping business hours daily — enough for real-time collaboration without anyone joining at odd hours.
00:0006:0012:0018:0024:00
KST (Seoul)
HKT (Hong Kong)
Overlap (7h)
Best call times between these locations
There is a 7-hour daily window where both locations are in business hours. The 3 best slots are listed below.
10:00 Seoul / 09:00 Hong Kong✓ Both working
11:00 Seoul / 10:00 Hong Kong✓ Both working
12:00 Seoul / 11:00 Hong Kong✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Public holidays for both locations
⚡ Holiday alerts for both locations, double-check schedules before confirming.
KST (Seoul)7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
HKT (Hong Kong)7 holidays
Jun 19Dragon Boat FestivalSOON
Jul 1Hong Kong Special Administrative Region Establishment Day
Sep 26Day following the Mid-Autumn Festival
Oct 1National Day
Oct 19Chung Yeung Festival
Scheduling between KST (Seoul) and HKT (Hong Kong)
KST (Seoul) (South Korea) and HKT (Hong Kong) (Hong Kong) are 1 hours apart. With a 7-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.
💡 Scheduling tips for these locations
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If you are in KST (Seoul), aim for 10:00–11:00, which corresponds to 09:00–10:00 in HKT (Hong Kong) — both teams are within working hours.
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If you are in KST (Seoul), aim for 11:00–12:00, which corresponds to 10:00–11:00 in HKT (Hong Kong) — both teams are within working hours.
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If you are in KST (Seoul), aim for 12:00–13:00, which corresponds to 11:00–12:00 in HKT (Hong Kong) — both teams are within working hours.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am KST (Seoul)".
