In May of 2000, five days after the canonization of St. Faustina, Pope John Paul II declared the Second Sunday of Easter Divine Mercy Sunday. Jesus appeared to St. Faustina several times to request that a feast be celebrated in honor of Divine Mercy:
My daughter, tell the whole world about My inconceivable mercy. I desire that the Feast of Mercy be a refuge and shelter for all souls, and especially for poor sinners. On that day the very depths of My tender mercy are open. I pour out a whole ocean of graces upon those souls who approach the Fount of My mercy. … Let no soul fear to draw near to Me. … It is My desire that it be solemnly celebrated on the first Sunday after Easter. Mankind will not have peace until it turns to the Fount of My Mercy. (Diary, no. 699)
This year we celebrate Divine Mercy Sunday on April 19, 2020. Even though the usual ways of celebrating this Sunday are only available virtually, there are several ways we can celebrate this feast of Mercy at home.
View a live-stream Divine Mercy devotion. Ave Maria Parish will be live streaming Divine Mercy devotions at 3 pm on at www.avemariaparish.org/live-stream-mass
Celebrate your own Divine Mercy devotions at home. Find an at-home celebration here: https://aleteia.org/2020/04/17/heres-how-to-celebrate-divine-mercy-sunday-at-home/
Pray the Divine Mercy chaplet. Here are directions: http://www.usccb.org/beliefs-and-teachings/how-we-teach/new-evangelization/year-of-faith/how-to-pray-the-chaplet-of-divine-mercy.cfm You can also find a version to pray along with on Formed: https://watch.formed.org/divine-mercy-chaplet-franciscan-friars-of-the-renewal
Find coloring sheets, activities and decorations: https://www.looktohimandberadiant.com/2017/04/divine-mercy-sunday-activities.html and https://www.catholicicing.com/celebrating-divine-mercy-sunday-with-kids/
Formed has a great selection for Divine Mercy Sunday: https://watch.formed.org/divine-mercy
Spend some time meditating on scripture passages that reflect Divine Mercy:
Jn 4:1-11 (LFM 463) And should I not pity Nineveh?
Psalm 103:1-14 (LFM 377) The Lord is kind and merciful
1 Pt 1:3-9 (LFM 347) The death and resurrection of Jesus has won us the hope of salvation
Eph 2:4-10 (LFM 32) God, who is rich in mercy, brought us to life in Christ
Rom 5:6-11 (LFM 91) Christ died for us while we were still sinners
Lk 15:3-7 (LFM 172) The Parable of the Lost Sheep
Lk 15:1-3, 11-32 (LFM 33) The Parable of the Prodigal Son
Have a Blessed Divine Mercy Sunday!