This year, Divine Mercy Sunday will be observed on April 8.
In the Great Jubilee Year 2000, St. John Paul II declared that throughout the Catholic Church, the Sunday after Easter will be known as Divine Mercy Sunday.
Instructions from St. Faustina
St. John Paul II referred to the many instructions that Jesus gave to St. Faustina. Her diary records 14 occasions when Jesus requested that a Feast of Divine Mercy (Divine Mercy Sunday) be observed.