This post contains the Mass propers in Latin (for both the Extraordinary and Ordinary Forms) for the 1st Sunday after Paschal Sunday which is variously known as Low Sunday, Quasimodo Sunday, Sunday in White, and Divine Mercy Sunday.
It is called Low Sunday to contrast it with the preceding Sunday which is the highest Sunday in the liturgical year, and so by contrast, this Sunday seems low. It is called Quasimodo Sunday after the Introit. It is called "Sunday in White" because traditionally, those neophytes baptized at the Sacred Paschal Vigil wore their white robes during the entire Paschal Octave removing them on this Sunday. Finally, it is called Divine Mercy Sunday in association with the Divine Mercy devotions which St. John Paul II recommended in particular.
Because of the relationship that this Sunday traditionally had to the neophytes, the antiphons (particularly the Introit) were addressed primarily to those neophytes on the day they removed their white robes. But to some degree, of course, they apply to all Christians.
Ant. Like newborn infants, alleluia: you must long for rational milk without guile, alleluia, alleluia, alleluia!
V. Exult in God our help: rejoice in the God of Jacob.
V. Glory be...
Ant. The angel of the Lord descended from heaven, and said to the women, "He Whom you seek has risen as He said!" Alleluia!
Ant. Extend your hand, and recognize the place of the nails, alleluia: and do not be unbelieving, but believing, alleluia, alleluia.