The Divine call, Unitarian call, or Da‘wat at-tawḥīd is the Druze period of time that was opened at sunset on Thursday 30 May 1017 CE by Fātimid Caliph Al-Hakim bi-Amr Allah and closed in 1043 CE by Al-Muqtana Baha'uddin, henceforth prohibiting anyone else from converting to the Druze religion.[1][2][3][4]