Hodie Christus natus est hodie
Salvator apparuit: hodie in terra canunt Angeli, laetantur Archangeli:
hodie exsultant justi, dicentes: Gloria in excelsis Deo, alleluja.
Today is Christ born; today the Savior has appeared; today the Angels sing,
the Archangels rejoice; today the righteous rejoice, saying:
Glory to God in the highest. Alleluia!
Hodie Christus Natus Est by Jan Pieterszoon Sweelinck.
Christmas is the only day of the year, other than Easter which keeps the old custom of celebrating its Feast at midnight. At this hour we called to mind that Mary in her spotless virginity gave to the world its Savior. In the midst of darkness, the Light was born. Therefore the Church celebrates Christmas on December 25, the time of the year when the days begin to lengthen ... Whereas Advent is the season of 'absence of Jesus,' Christmastide is a season of great joy in our possession of the Savior." - 1962 Roman Missal
"Thou art My Son, this day have I begotten Thee."