Prima said:
Can you provide a source for this, please?
Here is one of thousands:
Christmas Origins
One of the first facts that comes up in a study of the origins of Christmas deals with a festival called Saturnalia. Beginning on December 15th, the Romans held this seven-day celebration in honor of Saturn, god of agriculture. The winter solstice often fell around December 25 on the Julian calendarfollowing these seven days of feasting, revelry, and merrymaking. To commemorate the lengthening of days marked by this solstice, many Romans also enacted rituals that glorified
Mithra, the god of light from ancient Persia. But Mithra was of older origins yet than the Romans, who had integrated him into their mythos.
Mithra was a figure spoken of in the Zend-Avesta, or sacred Zoroastrian scriptures. In it, he was known as the chief spirit, the ruler of the world. Many modern scholars trace some of Christianitys origins back to Zoroastrianism, and for good reason. There are indeed many similarities between the two. It would seem that this is the same land that the patriarch Abraham lived in, as did Daniel, and many other Biblical figures. While differing from the God of the Hebrews, there is little doubt that the God of Abraham, Isaac, and Jacob did not influence and enter into the Babylonian cosmology. In fact, from the land of Zoroastrianism came the three Magi, or wise mennamed Balthasar, Melchior, and Caspar (Gaspar) according to a mosaic from around 500 A.D. from a church in Ravenna, Italywho came to visit the Christ child.
In time, after the 6th and 7th century Assyrian conquests, Mithra became known as the god of the sun. The Greeks identified him with Helios, proliferating the Cult of Mithra, and the Romans simultaneously adapted Mithra into their pantheon as they incorporated the Grecian Empire into their culture. The Roman Catholic Church also had the habit of absorbing pagan traditions into Christendom, soon converting this holiday commemorating the birth of the sun god into Christ Mass, a ceremony honoring the birth of the Son of God, whose actual date of birth is uncertain.