The Turin Canon is believed to assign a reign of 19 years to Senusret II and 30 years of reign to Senusret III .
The lengths of the reigns of Senusret II and Senusret III are one of the main considerations for discerning the chronology of the Twelfth Dynasty .
The Turin Canon is believed to assign a reign of 19 years to Senusret III   and 30 years of reign to Senusret III   .
The lengths of the reigns of Senusret II and Senusret III are one of the main considerations for discerning the chronology of the Twelfth Dynasty .