 Haman was also an astrologer, and when he was about to fix the time for the massacre of the Jews he first cast lots to ascertain which was the most auspicious day of the week for that purpose.Each day, however, proved to be under some influence favorable to the Jews.He then sought to fix the month, but found that the same was true of each month; thus, Nisan was favorable to the Jews because of the Passover sacrifice; Iyar, because of the Small Passover.