No, Easter works out for Catholics and Protestants as the first Sunday after the Ecclesiastical full moon that occurs after March 21, and for the Orthodox, Easter is calculated the same way, but it has an added rule that it must fall after Passover. Passover and other Jewish observances are calculated from astronomical new moon and usually occur on astronomical full moon. The Western churches fix the vernal equinox on March 21, when astronomically it can occur on either 21 or 22 March.