What is the time difference between JST and HKT?

Hong Kong Time (HKT) is 1 hour behind Japan Standard Time (JST). JST uses a UTC offset of UTC+9, while HKT uses UTC+8. For example, when it's 9:00 AM in JST, it's 8:00 AM in HKT. This difference remains constant year-round since neither timezone observes daylight saving time. Use the conversion table above to see the exact time for each hour of the day.

How do I convert JST to HKT?

To convert JST to HKT, subtract 1 hour from the JST time. For example, 9:00 AM JST is 8:00 AM HKT, and 5:00 PM JST is 4:00 PM HKT. Since neither timezone observes DST, this conversion stays the same all year. You can also use the interactive converter above for quick, accurate results.

What time is it in HKT when it's noon in JST?

When it's 12:00 PM (noon) in JST, it's 11:00 AM in HKT. This is because HKT is 1 hour behind JST. Similarly, when it's 6:00 PM in JST, it's 5:00 PM in HKT. This relationship is constant throughout the year. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours behind is HKT from JST?

HKT is 1 hour behind JST. This means when it's 9:00 AM in JST, it's 8:00 AM in HKT, and when it's midnight in JST, it's 11:00 PM in HKT. This offset is constant throughout the year since neither timezone uses daylight saving time. The conversion table above provides a complete hour-by-hour mapping.

Is HKT ahead or behind JST?

HKT is behind JST by 1 hour. Clocks in HKT show an earlier time than JST, meaning the day starts later in HKT relative to JST. For example, when it's noon in JST, it's still 11:00 AM in HKT. This difference stays the same year-round.

Does JST observe daylight saving time?

No, Japan Standard Time does not observe daylight saving time. The UTC offset of UTC+9 remains the same year-round, making time conversions from JST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does HKT observe daylight saving time?

No, Hong Kong Time does not observe daylight saving time. The UTC offset of UTC+8 remains the same year-round, making time conversions to HKT more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

What is the best time to call from JST to HKT?

The best time for a call between JST and HKT is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in HKT during their work day, call between 10:00 AM and 6:00 PM your JST time. Avoid calling too early or late, as the 1 hour difference means your evening could be their early morning. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

Do JST and HKT ever have the same time?

No, JST and HKT are always 1 hour apart and never display the same clock time simultaneously. Neither timezone observes DST, so the difference is constant year-round with no seasonal variation. The 1 hour offset is determined by their fixed positions relative to the Prime Meridian (UTC). You can always rely on this consistent difference when planning across these timezones.

JST to HKT Converter

Convert Japan Standard Time to Hong Kong Time. See the hour-by-hour conversion table below.

Timezone Details

Japan Standard Time

5:31 AM

Friday, April 3, 2026

JST (UTC+09:00)

Hong Kong Time

4:31 AM

Friday, April 3, 2026

HKT (UTC+08:00)

Difference: -1 hour

JST DST: No

HKT DST: No

24-Hour Overview

JST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

HKT — 24-hour overview

11p11p

12a

2a2a

5a5a

8a8a

10a

11a11a

12p

2p2p

5p5p

8p8p

10p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

HKT to JST EST to JST JST to EST PST to JST JST to PST GMT to JST JST to GMT IST to JST JST to IST

Cities in These Timezones

JST Cities

Tokyo Osaka Fukuoka

HKT Cities

Hong Kong

More Tools

Compare JST & HKT Plan a Meeting (JST & HKT)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Japan Standard Time on Wikipedia Hong Kong Time on Wikipedia IANA Time Zone Database