The Major Occultation (الغيبة الکبري Al-Ghaybah al-Kubra), according to Shia, is Mahdi's second occultation. According to Twelvers the Major Occultation which came around 329/941 is still in effect, and will not end until the End of Time when the Mahdi returns to reestablish Justice on earth. Upon the death of his father, while still a child, it is believed that the twelfth Imam entered his first occultation which lasted 70 lunar years. During this time the Hidden Imam is said to have represented on earth by four successive deputies.