“On a daily basis you will beseech the Father by my bitter enthusiasm for graces for these souls.” This novena is often prayed Anytime, though the trustworthy are inspired to start it on Very good Friday in planning for that feast of Divine Mercy, that's celebrated about the Sunday soon https://thedivinemercyprayer35566.mdkblog.com/34700489/5-essential-elements-for-chaplet-of-god-the-father