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
Northern Berber languages perfect. Northern Berber languages The Northern Berber languages are a dialect continuum spoken across the Maghreb, constituting a subgroup of the Berber branch of the Afroasiatic family. Their continuity has been broken by the spread of Arabic, and to a lesser extent by the Zenati group of Northern Berber. The Zenati idioms share certain innovations not found in the surrounding languages; notably a softening of "k" to "sh" and an absence of "a-" in certain words, such as "hand" ("afus" vs. "fus".) Northern Berber languages spoken by over a million people include Shilha, Central Morocco Tamazight, Riff, Shawiya and Kabyle.