One of the most important festivals in West Africa is celebration Cure Salée (Salt Cure). It's held annually and each Nomad ethnic group has its own celebration. The biggest celebration you can see at Wodaabé (Bororo) tribe, held in September around small town In-Gall, in North-east Niger. The festival takes about a week, but two days are major. The exact date is not known, it's changing every year and it's announced approximately one month before in depending on rains strength.