Both Eutychius (Annal. tom. ii. p. 319) and Elmacin (Hist. Saracen. p. 28) concur in fixing the taking of Alexandria to Friday of the new moon of Moharram of the twentieth year of the Hegira, (December 22, A.D. 640.) In reckoning backwards fourteen months spent before Alexandria, seven months before Babylon, etc., Amrou might have invaded Egypt about the end of the year 638; but we are assured that he entered the country the 12th of Bayni, 6th of June, (Murtadi, Merveilles de l'Egypte, p. 164. Severus, apud Renaudot, p. 162.) The Saracen, and afterwards Lewis IX. of France, halted at Pelusium, or Damietta, during the season of the inundation of the Nile.