What is Easter Duty? Is it about confession or Communion? Canon lawyer Cathy Caridi:
[W]hile the code [of canon law] does not mandate that we Catholics must receive the sacrament of penance at any particular time of year, it does specify that we receive Holy Communion during the Easter season. Canon 920 notes that once a Catholic has received his First Holy Communion, he is obliged to receive this sacrament at least once a year, during paschal time (i.e., between Easter and Pentecost). This, and not a perceived requirement to go to confession, is the actual origin of the term "Easter Duty."