Divine Mercy Sunday!

Today is Divine Mercy Sunday!  Catholics can gain a plenary indulgence by simply attending Mass and fulfilling the three conditions of going to Confession, receiving Holy Communion, and praying for the Holy Father within a week.  A plenary indulgence removes all temporal punishment due to sin.  Basically, it's a get-out-of-Purgatory-free card for someone who has died or for yourself (for the sins you've committed and been absolved for to this point).  This is one of the many incredible riches of mercy that God has given the Church! 

A write-up from a Catholic radio station (Relevant Radio) explains further:

Jesus said to Saint Faustina, “I want the image to be solemnly blessed on the first Sunday after Easter, and I want it to be venerated publicly so that every soul may know about it. By means of the Image I shall be granting many graces to souls; so let every soul have access to it.” (Diary 341, 570)

Jesus promised extraordinary graces on Divine Mercy Sunday: “I want to grant a complete pardon to the souls that will go to Confession and receive Holy Communion on the Feast of My Mercy.”(Diary 1109)

The Holy See also officially decreed that a Plenary Indulgence can be obtained on the Feast of Mercy:

"A plenary indulgence, granted under the usual conditions (sacramental confession, Eucharistic communion and prayer for the intentions of Supreme Pontiff) to the faithful who, on the Second Sunday of Easter or Divine Mercy Sunday, in any church or chapel, in a spirit that is completely detached from the affection for a sin, even a venial sin, take part in the prayers and devotions held in honour of Divine Mercy, or who, in the presence of the Blessed Sacrament exposed or reserved in the tabernacle, recite the Our Father and the Creed, adding a devout prayer to the merciful Lord Jesus (e.g. Merciful Jesus, I trust in You!)..."