JST to WAT: JST is 8 hours ahead of WAT
Japan Standard Time is 8 hours ahead of West Africa Time, on every day of the year. It is 7:59 am JST in Japan and 11:59 pm WAT in West Africa, which is already the previous day there.
Convert a specific time from JST to WAT
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between JST and WAT?
West Africa Time is 8 hours behind Japan Standard Time. To go from JST to WAT you subtract 8 hours. That gap holds on all 365 days of 2026: neither zone moves its clocks.
JST to WAT conversion table
Every hour of Sunday, September 27, 2026 in Japan, with the matching reading in West Africa. 8 of the 24 hours land on a different calendar date in West Africa, which is the part people get wrong when they schedule across this pair.
| JST | JST 24h | WAT | WAT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 4:00 pm | 16:00 | the previous day |
| 1:00 am | 01:00 | 5:00 pm | 17:00 | the previous day |
| 2:00 am | 02:00 | 6:00 pm | 18:00 | the previous day |
| 3:00 am | 03:00 | 7:00 pm | 19:00 | the previous day |
| 4:00 am | 04:00 | 8:00 pm | 20:00 | the previous day |
| 5:00 am | 05:00 | 9:00 pm | 21:00 | the previous day |
| 6:00 am | 06:00 | 10:00 pm | 22:00 | the previous day |
| 7:00 am | 07:00 | 11:00 pm | 23:00 | the previous day |
| 8:00 am | 08:00 | 12:00 am | 00:00 | same day |
| 9:00 am | 09:00 | 1:00 am | 01:00 | same day |
| 10:00 am | 10:00 | 2:00 am | 02:00 | same day |
| 11:00 am | 11:00 | 3:00 am | 03:00 | same day |
| 12:00 pm | 12:00 | 4:00 am | 04:00 | same day |
| 1:00 pm | 13:00 | 5:00 am | 05:00 | same day |
| 2:00 pm | 14:00 | 6:00 am | 06:00 | same day |
| 3:00 pm | 15:00 | 7:00 am | 07:00 | same day |
| 4:00 pm | 16:00 | 8:00 am | 08:00 | same day |
| 5:00 pm | 17:00 | 9:00 am | 09:00 | same day |
| 6:00 pm | 18:00 | 10:00 am | 10:00 | same day |
| 7:00 pm | 19:00 | 11:00 am | 11:00 | same day |
| 8:00 pm | 20:00 | 12:00 pm | 12:00 | same day |
| 9:00 pm | 21:00 | 1:00 pm | 13:00 | same day |
| 10:00 pm | 22:00 | 2:00 pm | 14:00 | same day |
| 11:00 pm | 23:00 | 3:00 pm | 15:00 | same day |
What are the best hours to schedule a call between JST and WAT?
No hour of the standard 9:00 am to 5:00 pm working day falls inside working hours on both sides. Japan and West Africa are 8 hours apart, which is too far for an overlap, so somebody has to take a call outside their own working day. The least painful options are below, ranked by how close both sides sit to the middle of the afternoon.
| JST | WAT | Working hours | Note |
|---|---|---|---|
| 3:00 pm | 7:00 am | JST only | afternoon in Japan, early morning in West Africa |
| 4:00 pm | 8:00 am | JST only | afternoon in Japan, mid morning in West Africa |
| 5:00 pm | 9:00 am | WAT only | evening in Japan, mid morning in West Africa |
Does daylight saving change JST to WAT?
Japan Standard Time does not move its clocks at all, so its UTC+9 offset holds every day of the year.
West Africa Time does not move its clocks at all, so its UTC+1 offset holds every day of the year.
Is JST ahead of or behind WAT?
JST is ahead of WAT by 8 hours: when it is 12:00 pm in Japan, it is 4:00 am in West Africa. Neither Japan Standard Time nor West Africa Time observes daylight saving, so the abbreviations never change and the gap between them is fixed.
Japan Standard Time covers Tokyo, Osaka and the whole of Japan. West Africa Time covers Lagos, Kinshasa, Luanda and Douala, the most populous zone in Africa. The identifiers behind them are Asia/Tokyo and Africa/Lagos, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is JST in WAT?
- JST is 8 hours ahead of WAT. 9:00 am JST is 1:00 am WAT.
- How many hours ahead is WAT of JST?
- WAT is 8 hours behind JST.
- What time is it in West Africa right now?
- 11:59 pm WAT on Saturday, September 26, 2026.
- When can Japan and West Africa meet during working hours?
- There is no shared working hour. The closest fit is 3:00 pm JST, which is 7:00 am WAT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so JST and WAT are the abbreviations genuinely in force today rather than a fixed assumption.
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