WAT to JST
+8hWAT
WATSOURCEJST
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
WAT and JST on the World Map
The map below highlights the WAT (West Africa Time) and JST (Japan Standard Time) timezone regions across the globe.
WAT – West Africa Time
UTC+01:00West Africa Time (WAT) is the time zone for West and Central Africa, 1 hour ahead of UTC.
- •Lagos, Nigeria is the most populous city in Africa.
- •WAT is the same offset as CET (UTC+01:00).
- •Nigeria does not observe daylight saving time.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
Comparing Time Zones: WAT and JST
WAT runs on West Africa Time (WAT) at UTC+01:00. JST runs on Japan Standard Time (JST) at UTC+09:00. That puts WAT 8 hours ahead of JST — a difference of +8h at the current offsets.
In practice, when it is 9:00 AM in WAT it is 5:00 PM in JST. Midnight in WAT is 8:00 AM in JST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
WAT to JST time conversion table
| WAT (WAT) | JST (JST) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | same day |
| 6:00 AM | 2:00 PM | same day |
| 7:00 AM | 3:00 PM | same day |
| 8:00 AM | 4:00 PM | same day |
| 9:00 AM | 5:00 PM | same day |
| 12:00 PM | 8:00 PM | same day |
| 3:00 PM | 11:00 PM | same day |
| 5:00 PM | 1:00 AM | next day |
| 6:00 PM | 2:00 AM | next day |
| 9:00 PM | 5:00 AM | next day |
Why people convert WAT to JST time
- Scheduling a call from WAT to JST: a 10:00 AM start in WAT lands at 6:00 PM in JST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +8h gap: WAT and JST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in JST is 5:00 PM in WAT.
- Coordinating a WAT-based team with JST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM WAT" is unambiguous; "3 PM" across a +8h gap is not.
- With a +8h gap there is no shared 9-to-5 window, so alternate the early start: one week WAT takes the early slot, the next week JST does.
About WAT (West Africa Time)
West Africa Time (WAT) is used across much of West and Central Africa, including Nigeria, the most populous country in Africa. WAT does not observe daylight saving time and shares the same offset as Central European Time (CET).
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between WAT and JST
With a +8h offset there is no overlap inside a normal 9 AM – 5 PM day. JST opens at 9:00 AM JST, which is 5:00 PM in WAT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
WAT and JST have no shared working hours because of the +8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
WAT is 8 hours ahead of JST (WAT UTC+01:00 → JST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between WAT and JST?
WAT (WAT, UTC+01:00) is 8 hours ahead of JST (JST, UTC+09:00). The gap is currently +8h.
How do I convert WAT time to JST time?
Add +8h to WAT local time. For example, 9:00 AM in WAT is 5:00 PM in JST.
What time is it in JST right now?
JST uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +8h offset from WAT.
What is the best time to call JST from WAT?
There is no shared working-hours window because of the +8h gap. The closest option is 1:00 PM in WAT, which is 9:00 PM in JST.
Which is ahead, WAT or JST?
WAT is 8 hours ahead of JST. When it is 12:00 PM in WAT it is 8:00 PM in JST.
Does daylight saving time affect the WAT–JST difference?
Neither zone observes daylight saving time, so the +8h offset between WAT and JST is fixed all year.
Which other cities share WAT's time zone?
WAT also covers Lagos, Abuja, Douala, Yaoundé, Luanda, Kinshasa, Brazzaville.
Which countries use WAT, WAT's zone?
WAT is used in Nigeria, Cameroon, Chad, Congo, Angola, Niger, Gabon, Equatorial Guinea.
Is there a day difference between WAT and JST?
Not normally. The +8h gap only pushes the date over for late-evening times.
What is the time difference between WAT and JST?
JST is +8h from WAT.
What timezone is WAT in?
WAT operates on its local timezone.
What timezone is JST in?
JST operates on its local timezone.
Which countries use WAT (West Africa Time)?
WAT is used in Nigeria, Cameroon, Chad, Congo, Angola, Niger, and 2 more countries.
Does WAT observe daylight saving time?
No, WAT does not observe daylight saving time and remains at UTC+01:00 year-round.
What are some interesting facts about WAT?
Lagos, Nigeria is the most populous city in Africa. WAT is the same offset as CET (UTC+01:00).
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in WAT, what time is it in JST?
When it is 12:00 AM (midnight) in WAT (WAT), it is +8h later in JST (JST).
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See every conversion from WAT →·See every conversion from JST →