The Divine Mercy novena begins Good Friday and continues through to Divine Mercy Sunday, the Sunday after Easter.

A novena is typically nine days of prayer in preparation of a celebration of a feast day. At the National Shrine of The Divine Mercy, the Chaplet of Divine Mercy Novena is recited perpetually at the Hour of Great Mercy — the three o'clock hour, when Jesus died on the cross. 

The Chaplet can be said anytime, but the Lord specifically asked that it be recited as a novena. He promised, "By this Novena (of Chaplets), I will grant every possible grace to souls."

If you would like to pray the novena, please visit https://www.thedivinemercy.org/message/devotions/novena.