input: [Item to be Done] Participation in Prayers & Devotions Held in Honor of Divine Mercy in a Church or Chapel [When] Divine Mercy Sunday (Sunday After Easter) [Comment] 
output: instead of the prescribed work, one may "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!')" (Apostolic Penitentiary)