Divine Mercy Sunday (7 April) is the Sunday after Easter each year.
It was first announced in an April 2000 homily given by Pope John Paul II for the Mass celebrating the canonization of Maria Faustina Kowalska.
St Faustina Kowalska was a Polish nun who received prophetic messages from Christ.
These messages included revelations about the infinite mercy of God and her obligation to spread the message to the world as recorded in her diary, “Divine Mercy in My Soul.”
John Paul II granted plenary and partial indulgences to the faithful who observe certain pious practices on Divine Mercy Sunday each year in a June 2002 decree.
He did this to inspire the faithful in devotion to the divine mercy.
What is an indulgence?
An indulgence is the remission of the temporal punishment due to sins that have already been forgiven, and it can be plenary or partial.