Was Jesus Born on December 25? What the Evidence Shows

Every December someone says it at the table: Christmas is really a pagan holiday, moved onto the birthday of the sun god. Heads nod. Nobody is quite sure whether it is true, or how to answer it.

Here is the honest version. Nobody knows the day Jesus was born, and the Bible never says. But the pagan story is not the settled fact it is often made out to be. The evidence is short enough to read in one sitting, so let us walk it in order.

The short answer: nobody knows the day

No one knows the day Jesus was born. The Gospels do not give it, and they do not give the season either. The earliest surviving record of December 25 as His birthday comes from a Roman almanac compiled in 354, more than three centuries after the event.

That does not make the date a fraud, and it does not make Christmas pagan. It means the church chose a day to remember a birth that the Gospel writers cared about for other reasons. How it chose that day is a real historical question, and scholars still argue about it. Here is what the evidence actually says, in order.

What Luke and Matthew actually say, and do not say

Only two Gospels tell the birth. Mark opens with Jesus as an adult, and John begins before creation. If you want the full sweep, we have a guide to where the Christmas story is in the Bible, passage by passage.

Luke dates the birth by politics, not by the calendar. His chapter opens, “In those days a decree went out from Emperor Augustus that all the world should be registered” (Luke 2:1, NRSVCE). That fixes a reign, not a month. Matthew is vaguer still: “In the time of King Herod, after Jesus was born in Bethlehem of Judea, wise men from the East came to Jerusalem” (Matthew 2:1, NRSVCE).

Andrew McGowan, writing in Bible Review and republished by the Biblical Archaeology Society, puts it plainly: the birth celebration is not mentioned in the Gospels or Acts, and “the date is not given, not even the time of year.” That silence is the starting point for everything below.

The evidence in date order

Most pages on this question pick a side and then gather evidence for it. It is more useful to lay the sources out by date and mark what each one can and cannot prove. The table below draws on McGowan’s article and the Catholic Encyclopedia’s 1908 entry on Christmas.

Two things stand out. Clement, the earliest writer to discuss the birthday at all, lists several dates and none of them is December 25. And Augustine, the latest, presents the date as received tradition, not as something he can prove.

The pagan-feast theory, stated fairly

This is the version most people have heard. Rome kept its Saturnalia festival in late December. In 274 the emperor Aurelian set a feast for the birth of the Unconquered Sun on December 25. On this reading, Christians took over a popular solar holiday and gave it new meaning.

The theory has real support. The same Roman almanac of 354 that records Christ’s birth also marks December 25 in its civil calendar as “Natalis Invicti,” the birthday of the Unconquered. The Catholic Encyclopedia’s 1908 entry, which carries a Catholic imprimatur, said that solar feast “has a strong claim on the responsibility for our December date.” Christian preachers did use the sun as a picture of Christ.

It also has real problems, which McGowan sets out. No ancient Christian writer says the date was chosen to match a pagan feast; the first such claim is a marginal note in a twelfth-century manuscript. And the date was apparently in place before Constantine, when a persecuted church was working hard to keep its distance from public pagan festivals, not to borrow them.

One fair distinction helps. Many later Christmas customs did come from European folk traditions as the faith spread north. McGowan grants that. The question here is narrower: where the date itself came from.

The calculation theory, stated fairly

The second explanation starts from Jesus’ death, not His birth. The Gospels date the crucifixion carefully, to Passover. Around 200, Tertullian reported a calculation that equated the day of the crucifixion with March 25 in the Roman calendar.

Many early Christians held that Jesus was conceived and died on the same day of the year. Count nine months from March 25 and you reach December 25. An anonymous treatise, apparently from fourth-century North Africa, says exactly that, and Augustine repeats it. In the East, the same reasoning from a spring date of April 6 lands on January 6. McGowan leans toward this explanation, while granting that we cannot be entirely sure.

This theory has limits too. It explains the arithmetic, but the surviving sources that spell it out come later than the feast may have started. C. P. E. Nothaft’s review in Church History (2012) names the two camps, the “History of Religions Theory” and the “Calculation Theory,” and argues that recent work points to a more nuanced answer that keeps some of both. The debate is not closed, and an honest page should say so.

Do the shepherds rule out winter?

You will often hear that shepherds would not be out at night in December, so Jesus must have been born in spring. Luke does say, “In that region there were shepherds living in the fields, keeping watch over their flock by night” (Luke 2:8, NRSVCE).

McGowan allows that the detail “might suggest the spring lambing season,” and that in December sheep might well have been penned. But he adds that most scholars would urge caution about pulling a precise date from an incidental detail in a story whose focus is theological rather than calendrical.

Commentators on Luke read the shepherds for what they say about people, not seasons. O. Wesley Allen Jr., writing for Working Preacher, argues that the men “living in the fields” were likely night-shift workers guarding someone else’s flock, which fits Luke’s theme of God lifting up the lowly. Melanie A. Howard, also at Working Preacher, reads them as trustworthy witnesses sent to find cosmic meaning in an ordinary birth. Neither reading depends on a month. So the shepherds do not settle the date either way.

Why the Eastern churches landed on January 6

By the fourth century there were two dates. The West kept December 25. The East, especially Egypt and Asia Minor, kept January 6, and at first that feast held the whole Christmas story, not only the magi. McGowan notes that the Armenian church still keeps Christmas on January 6. Elsewhere, January 6 became Epiphany, the feast of the wise men.

Today there is a second, separate reason some Christians celebrate in January. Orthodox churches that follow the older Julian calendar keep the feast on December 25 by that calendar, which falls on January 7 in the civil one, as we note in our Twelve Days of Christmas readings. That is a difference of calendars, not a different belief about the birth.

Does the date matter?

For history, yes. It is a fair question, and the answer is honestly uncertain. For faith, much less. Luke and Matthew rested the story on who was born and why, not on a day. The church keeps December 25 the way a family keeps a birthday it chose, as a fixed place to remember.

So when someone tells you Christmas is a pagan holiday, you can say what the evidence shows. Nobody knows the day. The first record of December 25 is from 354. There are two serious explanations, and scholars still weigh them. Then you can point to the thing that does not depend on any of it: the two chapters that tell the story.

If you are reading toward Christmas this year, an Advent Bible reading plan walks the weeks before it, and what Advent is and where it came from explains the season the date sits at the end of. For the verses themselves, in order, see Bible verses for Christmas. And if the story leaves you wanting to read more of the Gospels, start with where to start reading the Bible. Questions about how we handle tradition and translation are in our FAQ.

Frequently asked questions

Was Jesus really born on December 25?

Nobody knows. The Gospels give no date or season for the birth. December 25 first appears as Christ’s birthday in a Roman almanac compiled in 354, and it is a date the church chose to keep, not one the Bible records.

Is Christmas a pagan holiday?

Not in the way the claim usually means. Emperor Aurelian set a sun feast on December 25 in 274, and some scholars think that shaped the date. But no ancient Christian writer says the date was borrowed, and another theory derives it from Jesus’ death on March 25. Some later customs did come from European folk traditions.

When was Jesus actually born?

Luke places the birth under Emperor Augustus and Matthew in the time of King Herod. Neither gives a day or a month, so any specific date is an estimate. Around 200, Christians in Egypt were already proposing different days in spring.

Who first said Jesus was born on December 25?

The earliest surviving record is the Roman almanac of 354, also called the Philocalian Calendar, which lists Christ born in Bethlehem of Judea under December 25. Augustine later called it the date handed down by tradition.

Why do some Christians celebrate Christmas in January?

Two reasons. The early Eastern churches kept the birth on January 6, and the Armenian church still does. Separately, Orthodox churches that follow the older Julian calendar keep December 25 by that calendar, which falls on January 7 in the civil calendar.