(Bumped to the 28th. I had mistakenly posted the feast day as the 27th.)
Feast Day of the Holy Innocents, who are, in the Bible, the children of Bethlehem slain by Herod. In these skeptical days, some scholars maintained it never happened, as Wikipedia points outs. Of course, today, we do not believe anything unless the team at CSI produces a detailed autopsy report, so our skepticism itself is to be taken with a grain of salt. The incident is recorded in the Gospel of Matthew, and the early (non-canonical) Protoevangelium of James, so it isn't as if it is a medieval legend (although it is discussed at length in the Golden Legend); the story dates from the earliest days of the church, and Herod was certainly capable of it. The story is related in Matthew, Chapter 2, and explains two incidents in the early life of Christ, which is a) why his family fled to Egypt, and b) why they settled in Galilee upon return.
1 When Jesus was born in Bethlehem of Judea, in the days of King Herod, behold, magi from the east arrived in Jerusalem, 2. saying, "Where is the newborn king of the Jews? We saw his star at its rising and have come to do him homage." 3. When King Herod heard this, he was greatly troubled, and all Jerusalem with him. 4. Assembling all the chief priests and the scribes of the people, he inquired of them where the Messiah was to be born. 5. They said to him, "In Bethlehem of Judea, for thus it has been written through the prophet: 6. 'And you, Bethlehem, land of Judah, are by no means least among the rulers of Judah; since from you shall come a ruler, who is to shepherd my people Israel.'" 7. Then Herod called the magi secretly and ascertained from them the time of the star's appearance. 8. He sent them to Bethlehem and said, "Go and search diligently for the child. When you have found him, bring me word, that I too may go and do him homage." 9. After their audience with the king they set out. And behold, the star that they had seen at its rising preceded them, until it came and stopped over the place where the child was. 10. They were overjoyed at seeing the star, 11. and on entering the house they saw the child with Mary his mother. They prostrated themselves and did him homage. Then they opened their treasures and offered him gifts of gold, frankincense, and myrrh. 12. And having been warned in a dream not to return to Herod, they departed for their country by another way. 13. When they had departed, behold, the angel of the Lord appeared to Joseph in a dream and said, "Rise, take the child and his mother, flee to Egypt, and stay there until I tell you. Herod is going to search for the child to destroy him." 14. Joseph rose and took the child and his mother by night and departed for Egypt. 15. He stayed there until the death of Herod, that what the Lord had said through the prophet might be fulfilled, "Out of Egypt I called my son." 16. When Herod realized that he had been deceived by the magi, he became furious. He ordered the massacre of all the boys in Bethlehem and its vicinity two years old and under, in accordance with the time he had ascertained from the magi. 17. Then was fulfilled what had been said through Jeremiah the prophet: 18. "A voice was heard in Ramah, sobbing and loud lamentation; Rachel weeping for her children, and she would not be consoled, since they were no more." 19. When Herod had died, behold, the angel of the Lord appeared in a dream to Joseph in Egypt 20. and said, "Rise, take the child and his mother and go to the land of Israel, for those who sought the child's life are dead." 21. He rose, took the child and his mother, and went to the land of Israel. 22. But when he heard that Archelaus was ruling over Judea in place of his father Herod, he was afraid to go back there. And because he had been warned in a dream, he departed for the region of Galilee. 23. He went and dwelt in a town called Nazareth, so that what had been spoken through the prophets might be fulfilled, "He shall be called a Nazorean."
Omnes sancti Innocentes, orate pro nobis.