What is the time difference between JST and WAT?

West Africa Time (WAT) is 8 hours behind Japan Standard Time (JST). JST uses a UTC offset of UTC+9, while WAT uses UTC+1. For example, when it's 9:00 AM in JST, it's 1:00 AM in WAT. 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 WAT?

To convert JST to WAT, subtract 8 hours from the JST time. For example, 9:00 AM JST is 1:00 AM WAT, and 5:00 PM JST is 9:00 AM WAT. 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 WAT when it's noon in JST?

When it's 12:00 PM (noon) in JST, it's 4:00 AM in WAT. This is because WAT is 8 hours behind JST. Similarly, when it's 6:00 PM in JST, it's 10:00 AM in WAT. 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 WAT from JST?

WAT is 8 hours behind JST. This means when it's 9:00 AM in JST, it's 1:00 AM in WAT, and when it's midnight in JST, it's 4:00 PM in WAT. 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 WAT ahead or behind JST?

WAT is behind JST by 8 hours. Clocks in WAT show an earlier time than JST, meaning the day starts later in WAT relative to JST. For example, when it's noon in JST, it's still 4:00 AM in WAT. 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 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 to WAT 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 WAT?

The best time for a call between JST and WAT is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in WAT during their work day, call between 5:00 PM and 1:00 AM your JST time. Avoid calling too early or late, as the 8 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 JST and WAT ever have the same time?

No, JST and WAT are always 8 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 8 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.

JST to WAT Converter

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

Timezone Details

Japan Standard Time

5:18 PM

Saturday, April 4, 2026

JST (UTC+09:00)

West Africa Time

9:18 AM

Saturday, April 4, 2026

WAT (UTC+01:00)

Difference: -8 hours

JST DST: No

WAT DST: No

24-Hour Overview

JST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

WAT — 24-hour overview

4p4p

7p7p

10p10p

11p

12a

1a1a

4a4a

7a7a

10a10a

11a

12p

1p1p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

WAT 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

WAT Cities

Lagos Abuja

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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