"To receive Holy Communion during the Easter Time" is one of the laws of the Church.  (Easter Time lasts from the First Sunday of Lent until Trinity Sunday, the Sunday after Pentecost.)  It may seem strange to us that the Church had to make such a law.  We are accustomed to frequent Holy Communion.  Indeed, if we are in the state of grace, are not living in a situation which prevents reception of Communion, and have the proper dispositions, we should receive Communion every time we participate in the Sacrifice of the Mass.  However, frequent Communion was not always common.