section_path: Seasons and Festivals/Llyali
section_name: Llyali
paragraph_text: Llyali
  
  The coldest period is made up by 20 "white nights" (Berber: iḍan imellalen, Arabic: al-lyali al-biḍ), from 12 to 31 dujamber (Gregorian dates: 25 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.