Here is a press release from the Ministry of the Royal House, Protocol and Office:
"The Ministry of the Royal House, Protocol and Office announces that His Majesty King Mohammed VI, may God help him, has ordered that the official ceremony of celebrating the Sovereign's birthday at the Royal Palace be held this year. August 21st every year.
May the Lord preserve His Highness the King and keep it for the good of his faithful people.
Let him fill the Sovereign in person of His Royal Highness, Crown Prince Molaj El Hassan, the Prince of His Royal Highness Mulai Rahid and all members of the glorious royal family.
The Lord Auditor hears the wishes of those who plant them. "