R. Eliezer Hamodai says: They ate the manna for seventy days after the death of Moses. How so? Moses died on the seventh of Adar, and they ate of it (i.e., of what was left in their vessels) twenty-four days of the first Adar and thirty of the second Adar, that year being intercalated, and sixteen of Nissan, making seventy days, viz. "And the manna ceased (from their vessels) on the morrow."