What is the time difference between WAT and HST?

Hawaii Standard Time (HST) is 11 hours behind West Africa Time (WAT). WAT uses a UTC offset of UTC+1, while HST uses UTC-10. For example, when it's 9:00 AM in WAT, it's 10:00 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 WAT to HST?

To convert WAT to HST, subtract 11 hours from the WAT time. For example, 9:00 AM WAT is 10:00 PM HST, and 5:00 PM WAT is 6:00 AM 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 WAT?

When it's 12:00 PM (noon) in WAT, it's 1:00 AM in HST. This is because HST is 11 hours behind WAT. Similarly, when it's 6:00 PM in WAT, it's 7:00 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 WAT?

HST is 11 hours behind WAT. This means when it's 9:00 AM in WAT, it's 10:00 PM in HST, and when it's midnight in WAT, it's 1:00 PM 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 WAT?

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

Does WAT observe daylight saving time?

No, West Africa Time does not observe daylight saving time. The UTC offset of UTC+1 remains the same year-round, making time conversions from WAT 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 WAT to HST?

The best time for a call between WAT 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 8:00 PM and 4:00 AM your WAT time. Avoid calling too early or late, as the 11 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 WAT and HST ever have the same time?

No, WAT and HST are always 11 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 11 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.

WAT to HST Converter

Convert West Africa Time to Hawaii Standard Time. See the hour-by-hour conversion table below.

Timezone Details

West Africa Time

6:45 AM

Friday, April 3, 2026

WAT (UTC+01:00)

Hawaii Standard Time

7:45 PM

Thursday, April 2, 2026

HST (UTC-10:00)

Difference: -11 hours

WAT DST: No

HST DST: No

24-Hour Overview

WAT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

HST — 24-hour overview

1p1p

4p4p

7p7p

10p10p

11p

12a

1a1a

4a4a

7a7a

10a10a

11a

12p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

HST to WAT

Cities in These Timezones

WAT Cities

Lagos Abuja

HST Cities

Honolulu

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

West Africa Time on Wikipedia Hawaii Standard Time on Wikipedia IANA Time Zone Database