Apr. 5 Saturday in the Fourth Week of Lent; Opt. Mem. of St. Vincent Ferrer, Priest , Opt. Mem.

Saturday of the Fourth Week of Lent in the early ages of Christianity, was called Sitientes, taken from the first word of the original Introit of the Mass meaning "Thirsting." The Church was addressing her catechumens in the words of Isaiah and invites them to thirst after the grace to come and receive it in the holy Sacrament of Baptism. This marked the last day of the Lenten season before entering into Passiontide. In the current Liturgical calendar the last day of Lent before Holy Week would be Saturday of the Fifth Week of Lent, but the beginning of the Paschal Triduum on Holy Thursday evening marks the official end of the Lenten season.