context: Muhammad ibn al-Hassan (August 21, 1963 AD) King of Morocco. He is the twenty-third king of the Alawite Hashemite dynasty. The pledge of allegiance to him took place on Friday 9 Rabi ’al-Akher 1420 AH / 23 July 1999, following the death of his father, King Hassan II. According to a study published in 2009 and supervised by international researchers and specialists, he is one of the fifty most influential Muslim figures in the world. [1]
question: When did Mohamed VI take power in Morocco?
answers.text: Rabi ’al-Akher 1420 AH