Kha b-Nisan
Kha b-Nisan, Ha b-Nisin, or Ha b-Nison (Syriac: ܚܕ ܒܢܝܣܢ, "First of April"), also known as Resha d-Sheta (Syriac: ܪܫܐ ܕܫܢܬܐ, "Head of the year"), Akitu (ܐܟܝܬܘ), or Assyrian New Year, is the spring festival among the indigenous Assyrians of northern Iraq, northeastern Syria, southeastern Turkey and northwestern Iran, celebrated on the first day of April. The festival has its roots in the ancient Mesopotamian religion and its festival of Akitu, which were practiced by Assyrians until the faith's gradual demise in the face of Syriac Christianity between the 1st and 4th centuries AD. Today, Assyrians are predominantly Christian, with most being adherents of the Assyrian Church of the East, Chaldean Catholic Church, Syriac Orthodox Church, Syriac Catholic Church, Ancient Church of the East, Assyrian Pentecostal Church and Assyrian Evangelical Church.