It’s a pious tradition to pray the St. Andrew Christmas Novena throughout Advent. The prayer is said 15 times each day, beginning on St. Andrew’s feast day (November 30) through Christmas Eve.
Hail and blessed be the hour and moment In which the Son of God was born Of the most pure Virgin Mary, at midnight, in Bethlehem, in the piercing cold. In that hour vouchsafe, I beseech Thee, O my God, to hear my prayer and grant my desires,
[here mention your request]
through the merits of Our Saviour Jesus Christ, and of His blessed Mother. Amen.