At first glance, Christmas seems entirely Christian: decorated trees, lights, Santa Claus, festive scenes, and family gatherings. Yet, few realize that some of its traditions trace back to pre-Christian Roman celebrations. For centuries, the Roman Empire was largely polytheistic, worshipping multiple gods, and the customs associated with those faiths often intertwined with later Christian practices.
So, how exactly did ancient Roman rituals influence Christmas as we know it? The answer lies in a festival called Saturnalia, a major Roman celebration marking the winter season.
Saturnalia: The Roman Winter Festival
Saturnalia was held in honor of Saturn, the god of time, agriculture, and the supernatural. The festival began on December 17, extending for a week, and it was marked by a temporary reversal of social norms: masters dressed as servants, men wore women’s clothing, and slaves enjoyed freedom and leisure. Homes were decorated with greenery, candles were lit, and gifts—from candles to slippers—were exchanged among families.
“Saturnalia celebrated the ‘rebirth’ of the year,” explains historian Marguerite Johnson from the University of Newcastle. “As days grew shorter and winter approached, it was symbolically important to honor Saturn, the god who controlled time and sustenance, to ensure survival and prosperity.”
In addition to Saturnalia, Romans celebrated Natalis Solis Invicti, or the birth of the “Unconquered Sun,” on December 25. Ancient records, such as the 4th-century Calendar of Philocalus, note this festival as a way to honor the sun’s return during the winter solstice. Over time, this date would intersect with the celebration of Jesus’ birth.
From Pagan Rites to Christian Traditions
By the first century, Christians had established communities in Rome. As Christianity spread throughout the empire, its leaders sought ways to integrate the faith with existing cultural practices. Diarmaid MacCulloch, a professor of church history at Oxford University, notes, “The choice of December 25 as the date of Jesus’ birth had nothing to do with the Bible; it was selected to coincide with the winter period, symbolizing Christ as the light of the world. Festive customs from Saturnalia naturally moved into Christian practice as the religion gained prominence.”
By the 4th century, the integration was formalized. Between 320 and 353 CE, Pope Julius I officially set December 25 as the solemnity of Christmas, aligning the new Christian feast with existing winter celebrations. Later, Pope Leo I in 449 declared it one of the main feasts of the Catholic Church, and Emperor Justinian confirmed it as an official holiday in 529.
Historians continue to debate the exact date of Jesus’ birth—some suggest spring months like March or April—but the influence of Roman winter traditions is undeniable. Italian historian Polidoro Virgilio in the 15th century drew parallels between Saturnalia and Christmas customs such as “The Lord of Misrule,” where roles between masters and servants were temporarily reversed—a clear echo of Roman practices.
A Legacy of Celebration
Today, the echoes of Saturnalia are still visible in the Christmas we know: gift-giving, festive decorations, family gatherings, and a spirit of merriment that temporarily suspends everyday social rules. While the meaning has shifted from honoring Roman gods to celebrating the birth of Christ, the timing and some of the rituals retain their ancient roots.
In essence, Christmas is a layered holiday, a blend of faith, culture, and centuries of human tradition. Ancient Rome, with its festivals, rituals, and symbolic timing, helped shape the celebrations that millions around the world continue to enjoy each December 25.