Misericordia Sunday
Misericordia Sunday, also called Misericordias Domini, is a Sunday in Eastertide in the Christian liturgical calendar. It is so called from the incipit of the Introit "Misericordia Domini plena est terra..." from Psalm 33, a portion of which is traditionally assigned for the Mass of the day. In the post-Vatican II Mass of Paul VI, this Introit is assigned for the Fourth Sunday of Easter. However, for many centuries until the 1969 revision of the General Roman Calendar, the Misericordia Domini Introit was assigned for the Third Sunday of Easter. Thus pre- and post-1969 references to the day may differ by a week.
In many Catholic dioceses this day is called the feast of Our Lady Mother of the Good Shepherd; at Jerusalem and in the churches of the Franciscans it is called the feast of the Holy Sepulchre of Christ; in the Greek Church it is called ion myrophoron ; the Armenians celebrate on this Sunday the dedication of the first Christian church on Mount Sion.
Psalm for this Sunday is Psalm 23.
