What is the time difference between HKT and HST?

Hawaii Standard Time (HST) is 18 hours behind Hong Kong Time (HKT). HKT uses a UTC offset of UTC+8, while HST uses UTC-10. For example, when it's 9:00 AM in HKT, it's 3:00 PM in HST. 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 HKT to HST?

To convert HKT to HST, subtract 18 hours from the HKT time. For example, 9:00 AM HKT is 3:00 PM HST, and 5:00 PM HKT is 11:00 PM HST. 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 HST when it's noon in HKT?

When it's 12:00 PM (noon) in HKT, it's 6:00 PM in HST. This is because HST is 18 hours behind HKT. Similarly, when it's 6:00 PM in HKT, it's 12:00 AM in HST. 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 HST from HKT?

HST is 18 hours behind HKT. This means when it's 9:00 AM in HKT, it's 3:00 PM in HST, and when it's midnight in HKT, it's 6:00 AM in HST. 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 HST ahead or behind HKT?

HST is behind HKT by 18 hours. Clocks in HST show an earlier time than HKT, meaning the day starts later in HST relative to HKT. For example, when it's noon in HKT, it's still 6:00 PM in HST. This difference stays the same year-round.

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 from HKT more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does HST observe daylight saving time?

No, Hawaii Standard Time does not observe daylight saving time. The UTC offset of UTC-10 remains the same year-round, making time conversions to HST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

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

The best time for a call between HKT and HST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in HST during their work day, call between 3:00 AM and 11:00 AM your HKT time. Avoid calling too early or late, as the 18 hours 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 HKT and HST ever have the same time?

No, HKT and HST are always 18 hours 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 18 hours 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.

HKT to HST Converter

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

Timezone Details

Hong Kong Time

2:12 PM

Friday, April 3, 2026

HKT (UTC+08:00)

Hawaii Standard Time

8:12 PM

Thursday, April 2, 2026

HST (UTC-10:00)

Difference: -18 hours

HKT DST: No

HST DST: No

24-Hour Overview

HKT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

HST — 24-hour overview

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

12a12a

3a3a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

HST to HKT

Cities in These Timezones

HKT Cities

Hong Kong

HST Cities

Honolulu

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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