Assumption of the Blessed Virgin Mary Parish - Lebanon recently issued the following announcement.
Second Sunday of Easter or Divine Mercy Sunday
The Merciful Savior Invites all to the Feast of Mercy, Sunday, April 24. In honor of the Feast of Divine Mercy, Saint Mary’s will have Adoration of the Most Blessed Sacrament from 1:00 pm to 3:00 pm. The first hour will be silent Adoration, the second hour will be the Divine Mercy Chaplet, prayers and Benediction. Come, it is Jesus who invites you! Divine Mercy Sunday is celebrated on the Second Sunday of Easter, which concludes the Octave of Easter. In short, the main reason that Jesus wanted this feast to be established is that He wanted to "throw a lifeline," so to speak, to souls who are perishing, souls who are drowning in sin and despair.
That lifeline is this Feast, with all the tremendous promises of graces and benefits which Jesus attached to it. As He said to St. Faustina, He wanted to make this Feast day a special "refuge and shelter" for the "consolation" of souls. In Diary entry 1517 (Divine Mercy in My Soul by Saint Maria Faustine Kowalska), Jesus said: "the Feast of My Mercy has issued forth from My very depths for the consolation of the whole world." In short, Jesus gave us this Feast as both a comfort and a lifeline for souls.
Original source can be found here.