WAT stands for West Africa Standard Time. It is always UTC+1.
WAT itself never changes for daylight saving time – it is UTC+1 all year round.
Where WAT is used
Angola, Benin, Cameroon, Central African Republic, Chad, Congo - Brazzaville, Congo - Kinshasa, Equatorial Guinea, Gabon, Niger, Nigeria.
In some of these countries WAT is used only in part of the country or only part of the year.