Jubilate Sunday is the third Sunday after
Easter. It is called this because in the liturgy of the
Catholic Church the first line of the
introit for that day's
mass is "
Jubilate Deo omnis terra" ("Shout with joy to the Lord, all the earth") from
Psalm 66 (65).
The liturgy for this day, and for the next two Sundays, continues to celebrate the Easter resurrection.