Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between hkt and jst?
Hong Kong Time (hkt) is UTC+8 and Japan Standard Time (jst) is UTC+9. The difference between them is 1 hours.
Where is hkt used?
Hong Kong Time (hkt) is used in Hong Kong and surrounding regions. The IANA timezone identifier is Asia/Hong_Kong.
Where is jst used?
Japan Standard Time (jst) is used in Japan and surrounding regions. The IANA timezone identifier is Asia/Tokyo.
How do I convert hkt to jst?
Use the interactive converter above. Drag the time slider to any hkt time and the jst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
How far apart are HKT (Hong Kong) and JST (Tokyo)?
HKT (Hong Kong) is 1 hour behind JST (Tokyo). Midday in HKT (Hong Kong) lines up with 13:00 in JST (Tokyo).
HKT (Hong Kong) runs on Asia/Hong_Kong; JST (Tokyo) runs on Asia/Tokyo. Together they are 1 hour apart.
Daily overlap window
There is a 7-hour window each day where both HKT (Hong Kong) and JST (Tokyo) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
HKT (Hong Kong)
JST (Tokyo)
Overlap (7h)
Best times to schedule a meeting
There is a 7-hour daily window where both locations are in business hours. The 3 best slots are listed below.
09:00 Hong Kong / 10:00 Tokyo✓ Both working
10:00 Hong Kong / 11:00 Tokyo✓ Both working
11:00 Hong Kong / 12:00 Tokyo✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
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
JST (Tokyo)7 holidays
Jul 20Marine Day
Aug 11Mountain Day
Sep 21Respect for the Aged Day
Sep 23Autumnal Equinox Day
Oct 12Sports Day
How to work with HKT (Hong Kong) and JST (Tokyo) time zones
The 1-hour gap between HKT (Hong Kong) (Hong Kong) and JST (Tokyo) (Japan) requires some planning — but a 7-hour daily overlap means both teams can connect in real time without unusual scheduling.
💡 How to schedule across these time zones
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If you are in HKT (Hong Kong), aim for 09:00–10:00, which corresponds to 10:00–11:00 in JST (Tokyo) — both teams are within working hours.
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If you are in HKT (Hong Kong), aim for 10:00–11:00, which corresponds to 11:00–12:00 in JST (Tokyo) — both teams are within working hours.
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If you are in HKT (Hong Kong), aim for 11:00–12:00, which corresponds to 12:00–13:00 in JST (Tokyo) — 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 HKT (Hong Kong)".
