The reading of the Martyrology for a given day is always anticipated, being read on the preceding day. Therefore, this portion of the martryology for Christmas Day may be read prior to the beginning of the Christmas Midnight Mass. It presents the time line of the Incarnation.
In the year from the creation of the world, when God created heaven and earth, five thousand one hundred and ninety-nine; from the flood, two thousand nine hundred and fifty-seven; from the birth of Abraham, two thousand and fifteen; from Moses and the coming of the Israelites out of Egypt, one thousand five hundred and ten; from the anointing of King David, one thousand and thirty-two; in the sixty-fifth week, according to the prophecy of Daniel; in the one hundred and ninety-fourth Olympiad; in the year seven hundred and fifty-two from the foundation of the city of Rome; in the forty-second year of the empire of Octavian Augustus, when the whole world was at peace, in the sixth age of the world, Jesus Christ, eternal God, and Son of the eternal Father, desirous to sanctify the world by His most merciful coming, having been conceived of the Holy Ghost, and nine months having elapsed since His conception, is born in Bethlehem of Juda, having become Man of the Virgin Mary. The Nativity of our Lord Jesus Christ according to the flesh.