The Chaplet of Divine Mercy can be said anytime, but the Lord specifically asked that it be recited as a novena, beginning on Good Friday and continuing to Easter Saturday. He promised, “By this Novena (of Chaplets), I will grant every possible grace to souls.”
For each of the nine days, our Lord gave Saint Faustina a different intention:
“I desire that during these nine days you bring souls to the fountain of My mercy, that they may draw therefrom strength and refreshment and whatever grace they have need of in the hardships of life, and especially at the hour of death” (Diary, 1209).