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Why is Christmas celebrated on December 25th?

What Is the Origin of celebrating Christmas on 25th December?

The Christmas holiday is among the most popular holidays around the globe with billions of people celebrating it every year. Christmas is all about the birth of Jesus Christ who was one of the central figures in the Christian faith. However, the Bible does not indicate when Jesus was born. This brings up a historical question, why do Christians celebrate Christmas on the 25 th of December?
It can be answered by a curious blend of the prehistoric and early Christian history, symbolism, cultural adaptation, and theological argument. The day of 25th in December was not determined by chance, it was the outcome of centuries of evolution which was influenced by religious and cultural factors. In order to appreciate it, we should go back in time; back to ancient Rome, early Christian text and seasonal festivals and theological ties that took a date and turned it into a world-wide celebration.

Christianity: The Birth of Jesus: No Precise Biblical Date

The beginning point of the reading on the 25th of December is that the New Testament does not give a date on the birth of Jesus. In all the Gospels, no mention of a date of His birth exists. The birth of Jesus was not even much celebrated by early Christians and they were more concerned about the ministry, death and resurrection of Jesus.
Christians in early societies especially in the East considered Easter to be more important than Christmas. The practices of celebrating the birth of Christ did not start to be observed before the second and third centuries. In the evolution of these observances, early Christian philosophers tried to fix a date by the help of symbolic reasoning besides not verifiable historical evidence.

Ancient Estimates of the Birth date of Jesus.
This thought of establishing a precise date of the birth of Jesus dates back to the second century. There are early Christian theologians who gave various dates due to symbolic understanding of scripture.

The “Integral Age” Theory

Among the powerful ideas was that of the age of integration as was prevalent in the ancient Jewish thought. It implied that prophets were supposed to have died on the same day that they had been conceived. This was the logic that was applied to Jesus by the early Christians, which determined the time of His conception according to the suggested date of His crucifixion.
Many of the early Christians thought that Jesus died on March 25th. Had even the conception of His also occurred on the 25 th of March, then He would be born nine months later–December 25th.
This allegorical method had not its foundation in historical facts but in theology. However, it also gave a premise on which to select a date.
The other Dates in Early Christianity.

Various dates of the birth of Jesus were offered by different Christian groups:

6th January (which is still observed as Christmas in certain churches in the East)

March 28th

May 20th

November 18th

However, when Christianity spread in the Roman Empire, December 25 th began to gain traction and ultimately became the common day in the Western Church.

The Impact of Roman Festivals

A reason that has been talked of the most in regard to selecting December 25th has to do with the cultural and religious environment of ancient Rome.
Saturnalia
Between 17 and 23 December, Romans celebrated Saturnalia that is a feast dedicated to Saturn, the god of harvest. It was an occasion of feasting, gift-giving, decoration and role reversals in social aspects. Most researchers assume that since early Christians lived in the Roman culture realm, it was convenient to shape new Christian holidays in accordance to the existing ones.

Sol Invictus: The Unconquerable Sun

The other major festival was Dies Natalis Solis Invicti the Birthday of the Unconquered Sun on the 25 st December. This festival was commemorating to the sun God at the winter solstice when the number of days was starting to go up again. This feast was institutionalised by Roman Emperor Aurelian in 274 AD.
The allegory of the reposition of the sun provided a strong comparison to early Christians who considered Jesus as the Light of the World. It is held by a few that the date of December 25th was specifically decided upon by Christians as an attempt to provide a substitute celebration or re-use already existing cultural symbolism to a Christian use.

Adapting ‘Pagan’ Festivals

Although some myths of the time are exaggerating the point that Christmas is an old pagan holiday reclaimed, the historical point is more moderate. The cultural surroundings usually led to the incorporation and adaptation of materials by early Christians. Christian leaders can by selecting December 25th be able to:

Promote the popularization of the new holiday.

Offer an alternative to pagan feasts of the day which is Christian.

Introduce new meaning to current symbols.

This is in line with how religions tend to develop, namely, extending and changing cultural practices instead of destroying them completely.

The Winter Solstice Symbolism.
Winter solstice gave strong symbolic value to the early Christians. In the Northern Hemisphere, the shortest day and the longest night of the year are on solstice, after which daylight gains.
This was a pivotal point in the history of ancient people in various cultures, a revival of light. Early Christians related this symbolism of nature to Jesus, whom the bible refers to as the Light of the World.

This association is indicated in quotes of early theologians:

In the Book of Malachi, Jesus is referred to as the Sun of Righteousness.

The Gospel of John focuses on light image to characterize Christ.

Writers of the early Christian world like Augustine connected the birth of Christ with the lengthening of the day.

Therefore, the solstice offered a good spiritual allegory: The birth of Christ was the dawn of hope and salvation, and the arrival of the sun promised much longer and brighter days.

Damascus would eliminate its rivals and establish itself in the Roman Church.
In the Western Christian world, by the early fourth century, the birth of Jesus was generally linked with December 25 th. The first known mention is found in a Roman almanac of 336 AD, where December 25th is marked as Natali’s Christi -the birth of Christ.
This is the time when Christianity was emerging in the Roman Empire and was accepted by emperor Constantine. With the increased organization and spread of Christianity, the need to create a date when Jesus was born served to bring together Christian communities.

Deception of December 25th Throughout Europe

After having become fixed in Rome, the 25th of December, by degrees, permeated other communities of Christians:

It was celebrated in Constantinople by the end of the fourth century.

It had spread to other parts of the world by the fifth century including Gaul and North Africa.

It had become common in Christian Europe by the sixth century.

In various places local practices were mixed with Christian practice, producing what today are still observed:

Evergreen decorations

Feasting

Gift-giving

Candlelight services

Nativity plays

The traditions evolved throughout centuries, combining the Christian symbolism with the local culture.

Eastern vs. Western Traditions January 6th vs. December 25th.
Whereas the Western Church celebrated Jesus on 25th December, some East Christians have always observed the birth of Jesus on the 6th of January, who coincidentally uses his day in relation to the Epiphany- the revelation of the world to Christ.
In the course of time both dates acquired different values:

December 25th: Birth of Jesus

January 6th: Magi Visit, Baptism of Jesus and other epiphany events.

Christmas is still early in January in some churches particularly those employing the Julian calendar.

Theological Implication of the Date.
In addition to the historical factors, the day of December 25th has strong theological symbolism. Early Christians paid great attention to such a concept as incarnation or God becoming human. This event was celebrated on the darkest day of the year and this showed some spiritual themes of light conquering darkness.
The date also aligns with:

Hanukkah, Jewish Festival of Lights.

Rebirth and renewal, symbolic themes.

The myth that Christ is fulfilling the ancient prophesies of a coming light.

In this way, the day of December 25th turned into a strong spiritual metaphor and the meaning of the holiday was augmented by historical backgrounds.

Christmas Through the Ages
The Christmas changed greatly, when the 25th of December was fixed:

During the Middle Ages, it was a large-scale celebration that was characterized by music, drama, and community events.

During the Renaissance and early modern period, numerous traditions were developed or developed further such as Christmas trees and carols.

During the 19th and 20th centuries, Christmas has become a religious and cultural holiday all over the world being both a religious and a celebratory tradition.

Even though the cultural differences existed, the date was at the center of the identity of the holiday.

Summary: A Date with Faith, Culture, and Symbolism

Christmas is observed on the 25th of December not because it has been historically demonstrated that this is the literal birthday of Jesus, but because the date has been subjectively special in the two millennia of Christian practice. It emerged from:

Symbolic descriptions of the death and conception of Jesus.

Assimilation with Roman festivals and symbolism of solstices.

Light and hope, theological ponderings.

Efforts of the early Church were unifying.

On the 25th of December, there is a meeting of faith, history, culture and symbolism. Nowadays, it is a world festival of love, peace, generosity and spiritual renewal- values which have never been put into time or politics.
No matter how and when it came about, the power of Christmas is in the message it is delivering, which is the meaning of hope and light and that there is a belief that something good can be introduced into the world even in the simplest of ways.