Berber calendar December - 13 January), and 20 "black nights" (Berber: "iḍan tiberkanin/isṭṭafen", Arabic "al-lyali al-sud"), beginning on the first day of "yennayer", corresponding to the Gregorian 14 January. The first day of the year is celebrated in various ways in the different parts of North Africa. A widespread tradition is a meal with particular foods, which vary from region to region (such as a couscous with seven vegetables). In some regions, it is marked by the sacrifice of an animal (usually a chicken). In Algeria, such a holiday is celebrated even by many people who don't use the Berber calendar in
Shilha people Berber origin, which along with the Berber people, includes other ethnic subgroups such as the Tuareg, Rif, Kabyle, Shawia and Beraber. The Soussi people are a part of Morocco's Berber-speaking community, and the southernmost residing Berber population. In antiquity, Berbers traded with the Phoenicians and Carthaginians in commercial entrepots and colonies along the northwestern littoral. They established the ancient kingdom of Mauretania, which fell under Roman rule in 33 CE, before eventually being reunited under Berber sovereignty. During the 7th century, the Islamic Umayyad Caliphate invaded the Berber and Byzantine strongholds in the Northwest Africa, seizing Carthage in 698 AD.