ADT to WAT: ADT is 4 hours behind WAT
Atlantic Time is 4 hours behind West Africa Time right now. It is 7:07 pm ADT in Atlantic and 11:07 pm WAT in West Africa.
Convert a specific time from ADT 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 ADT and WAT?
West Africa Time is 4 hours ahead of Atlantic Time. To go from ADT to WAT you add 4 hours. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 4 hours to 5 hours, because Atlantic moves its clocks and West Africa does not. This page recomputes it rather than assuming.
ADT to WAT conversion table
Every hour of Saturday, September 26, 2026 in Atlantic, with the matching reading in West Africa. 4 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.
| ADT | ADT 24h | WAT | WAT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 4:00 am | 04:00 | same day |
| 1:00 am | 01:00 | 5:00 am | 05:00 | same day |
| 2:00 am | 02:00 | 6:00 am | 06:00 | same day |
| 3:00 am | 03:00 | 7:00 am | 07:00 | same day |
| 4:00 am | 04:00 | 8:00 am | 08:00 | same day |
| 5:00 am | 05:00 | 9:00 am | 09:00 | same day |
| 6:00 am | 06:00 | 10:00 am | 10:00 | same day |
| 7:00 am | 07:00 | 11:00 am | 11:00 | same day |
| 8:00 am | 08:00 | 12:00 pm | 12:00 | same day |
| 9:00 am | 09:00 | 1:00 pm | 13:00 | same day |
| 10:00 am | 10:00 | 2:00 pm | 14:00 | same day |
| 11:00 am | 11:00 | 3:00 pm | 15:00 | same day |
| 12:00 pm | 12:00 | 4:00 pm | 16:00 | same day |
| 1:00 pm | 13:00 | 5:00 pm | 17:00 | same day |
| 2:00 pm | 14:00 | 6:00 pm | 18:00 | same day |
| 3:00 pm | 15:00 | 7:00 pm | 19:00 | same day |
| 4:00 pm | 16:00 | 8:00 pm | 20:00 | same day |
| 5:00 pm | 17:00 | 9:00 pm | 21:00 | same day |
| 6:00 pm | 18:00 | 10:00 pm | 22:00 | same day |
| 7:00 pm | 19:00 | 11:00 pm | 23:00 | same day |
| 8:00 pm | 20:00 | 12:00 am | 00:00 | the next day |
| 9:00 pm | 21:00 | 1:00 am | 01:00 | the next day |
| 10:00 pm | 22:00 | 2:00 am | 02:00 | the next day |
| 11:00 pm | 23:00 | 3:00 am | 03:00 | the next day |
What are the best hours to schedule a call between ADT and WAT?
4 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 9:00 am ADT to 1:00 pm ADT. In West Africa that window reads 1:00 pm to 5:00 pm. Outside it, one side is either not yet at their desk or already gone.
| ADT | WAT | Working hours | Note |
|---|---|---|---|
| 9:00 am | 1:00 pm | both sides | mid morning in Atlantic, afternoon in West Africa |
| 10:00 am | 2:00 pm | both sides | mid morning in Atlantic, afternoon in West Africa |
| 11:00 am | 3:00 pm | both sides | mid morning in Atlantic, afternoon in West Africa |
| 12:00 pm | 4:00 pm | both sides | noon in Atlantic, afternoon in West Africa |
Does daylight saving change ADT to WAT?
Atlantic Time is currently on ADT and changes next on Sunday, November 1, 2026, when the clock falls back from 1:59 am to 1:00 am and the offset moves from UTC-3 to UTC-4.
West Africa Time does not move its clocks at all, so its UTC+1 offset holds every day of the year.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 4 hours and for the rest it is 5 hours. The table above is built for today, not for an average day.
Is ADT ahead of or behind WAT?
ADT is behind WAT by 4 hours: when it is 12:00 pm in Atlantic, it is 4:00 pm in West Africa. One wrinkle worth knowing: AST and ADT are two names for the same zone, not two zones. Atlantic Time reads AST in winter and ADT in summer. When somebody types "ast to wat" they nearly always mean the zone rather than the literal winter offset, so this page resolves AST to America/Halifax and WAT to Africa/Lagos and applies whichever offset is genuinely in force on the day.
Atlantic Time covers Halifax, Moncton and the Canadian Maritimes. West Africa Time covers Lagos, Kinshasa, Luanda and Douala, the most populous zone in Africa. The identifiers behind them are America/Halifax and Africa/Lagos, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is ADT in WAT?
- ADT is 4 hours behind WAT. 9:00 am ADT is 1:00 pm WAT.
- How many hours ahead is WAT of ADT?
- WAT is 4 hours ahead of ADT. That varies across the year, between 4 hours and 5 hours.
- What time is it in West Africa right now?
- 11:07 pm WAT on Saturday, September 26, 2026.
- When can Atlantic and West Africa meet during working hours?
- Between 9:00 am and 1:00 pm ADT, which is 1:00 pm to 5:00 pm WAT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so ADT and WAT are the abbreviations genuinely in force today rather than a fixed assumption.
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