In ancient pagan times, the last day of winter in the Northern Hemisphere was celebrated as the night that the Great Mother Goddess gives birth to the baby Sun God. It is also called Yule, the day a huge log is added to a bonfire, around which everyone would dance and sing to awaken the sun from its long winter sleep.

In Roman times, it became the celebrations honoring Saturnus (the harvest god) and Mithras (the ancient god of light), a form of sun worship that had come to Rome from Syria a century before with the cult of Sol Invictus. It announced that winter is not forever, that life continues, and an invitation to stay in good spirit.

The last day of winter in the Northern Hemisphere occurs between the 20th and 22 December. The Roman celebrated Saturnalia between 17 and 24 December.

The early Christians
To avoid persecution during the Roman pagan festival, early Christians decked their homes with Saturnalia holly. As the numbers of Christians increased and their customs prevailed, the celebrations took on a Christian observance. But the early church actually did not celebrate the birth of Christ in December until Telesphorus, who was the second Bishop of Rome from 125 to 136AD, declared that Church services should be held during this time to celebrate "The Nativity of our Lord and Saviour." However, since no one was quite sure in which month Christ was born, the Nativity was often held in September, which was during the Jewish Feast of Trumpets (modern-day Rosh Hashanah). In fact for more than 300 years, people observed the birth of Jesus on various dates.

In the year 274AD, solstice fell on 25th December. Roman Emperor Aurelian proclaimed the date as "Natalis Solis Invicti," the festival of the birth of the invincible sun. In 320 AD, Pope Julius I specified the 25th of December as the official date of the birth of Jesus Christ.

Christmas is official, but not generally observed
In 325 AD, Constantine the Great, the first Christian Roman emperor, introduced Christmas as an immovable feast on 25 December. He also introduced Sunday as a holy day in a new 7-day week, and introduced movable feasts (Easter). In 354 AD, Bishop Liberius of Rome officially ordered his members to celebrate the birth of Jesus on December 25.

However, even though Constantine officiated the 25th of December as the birthday of Christ, Christians, recognizing the date as a pagan festival, did not share in the emperor's good intentions. Christmas failed to gain universal recognition among Christians until quite recently. In England, Oliver Cromwell banned Christmas festivities between 1649 and 1660 through the so-called Blue Laws, believing that Christmas should be a solemn day.
When many Protestants escaped persecution by fleeing to the colonies all over the world, interest in joyous Christmas celebrations was rekindled there. Still, Christmas was not even a legal holiday until the 1800s. And, keep in mind; there was no Father Christmas (Santa Claus) figure at that time.

Have a merry Christmas
Today, many of the pagan uses are reflected in Christmas. Jesus was born in March, yet his birth is celebrated on 25 December, the time of solstice. The Christmas celebrations end the 12th day of Christmas (6 January), the same amount of days that the return of the sun was celebrated by ancient and Roman pagans. It thus is no surprise that Christian puritans - or even conservative Christians - often are upset that Christmas "is not as religious as it was meant to be," forgetting that Christmas was not celebrated at all until fairly recently.