Plenary Indulgence for Souls in Purgatory

A plenary indulgence, applicable only to the souls in purgatory, is granted under the usual conditions to the faithful who, on any day from November 1^st until November 8^th, devoutly visit a cemetery and pray, if only mentally, for the departed.  “An indulgence is a remission before God of the temporal punishment due to sins whose guilt has already been forgiven, which the faithful Christian who is duly disposed gains under certain prescribed conditions through the action of the Church which, as the minister of redemption, dispenses and applies with authority the treasury of the satisfactions of Christ and the saints.  An indulgence is partial or plenary according as it removes either part or all of the temporal punishment due to sin.”  Catechism of the Catholic Church Para. 1471.