You do understand some part of the world there were pagans much longer than other parts of the world, correct??
The prevailing theme in all of the celebrations was the welcoming of the sun and the joy in the rebirth of the world. The Pagans viewed these celebrations of the return of the sun, as the fact that good will prevail over evil and the sun will return to the earth, which makes it easy to see how it could be adapted to the Christian beliefs that Jesus was born to save the world. Jesus Christ has been often referred to the "Light of the World" and it only seems fitting that the winter solstice when the sun appeared to return to the waiting world, that His birth was celebrated on that day. There has been quite a bit of controversy on the exact time that Jesus was born. Some believe that it was in March, others in September, but the choice of December 25th demonstrates a desire by early Christians to associate the day with a day honored by many as the day that the light was brought to the world. Since Jesus is often considered, "The Light of the World", this appears to be an appropriate day to choose for the celebration of His birth.
Other traditions also seem fitting including the fact that the date was the same as that chosen by the Babylonians to celebrate their god of creation. Even though Jesus didn't create the world, it is believed that He arrived to bring peace and order to the world, which is very similar to the belief in Marduk. There is even a similarity in the German belief in Oden. "The day will surely come when at God's command Jesus Christ will judge the secret lives of everyone, their inmost thoughts and motives; this is all part of God's great plan, which I proclaim." 4 So whether the coming of light, the return of the sun (perhaps could be interpreted as son?) or the arrival of a god to judge all of the followers, Christmas is a reflection of the celebrations of the light returning to the world and of a sign of hope amid the darkness of the world.
As you progress through the Christian liturgical year, the other significant holiday is Easter, which is the celebration of the death and resurrection of Jesus Christ. The forty days prior to this holiday is called Lent. In 519 AD, Lent gained acceptance by the Catholic Church. A writer of that time, John Cassian explains that the church didn't observe Lent. But as believers started to decline from their devotion, priests had called for a period of fasting to recall them to their original fervor.5 Many other regions, practiced a forty-day periods of fasting. In the Andes and in Mexico pagan followers practiced a solemn fast of forty days to honor the sun.6 The Egyptians also observed a fast of forty days to honor Adonis or Osiris, the mediatorial god. Among the Pagans, Lent seems to be a fast to prepare for the annual festival in commemoration of the "death and resurrection of Tammuz which was celebrated by alternate weeping and rejoicing...being observed in Palestine and Assyria in June, therefore called the "month of Tammuz"8 Once again correlations can be found between the Christian Lent and practices of fasting in preparation for a great event or occasion. This event for most of the pagan religions appears to be the preparation for the coming of spring and the "rebirth" of the land. This can be compared to the Christian belief that even though Jesus had died, that He was "reborn" in his resurrection and that the followers need to prepare themselves for the anniversary of this event by the practice of fasting.