Traditionally said 15 times a day from November 30th (Feast of St. Andrew) until Christmas Day.

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 piercing cold. In that hour vouchsafe, O my God, to hear my prayer and grant my desires, through the merits of Our Savior Jesus Christ and of His Blessed Mother. Amen.