why not celebrate dec.25
When the Magi arrived, Joseph and Mary were no longer with Christ in a stable, but in a house (Mt.2:11).
Jesus was born in a stable in the early evening hours (just as the Jewish calendar advanced to 1 Tishri) of September 11, 3BC.
Jesus had been circumcised (Lk.2:21) and dedicated at the Temple some 40 days after His birth (Lk.2:22-24).
Soon after the Magi left, Herod killed the male children in and around Bethlehem who were two years of age or younger (Mt.2:16).
for non christians and self claimed christians you can search more of the above facts on the internet
all children under the age of two were slain shows that Herod was taking every possible interpretation into account for the time of Christ's birth, since it was not clear in astrological interpretation whether the appearance of "His star" signified the conception or birth of the baby. These evidences show that Jesus was some months old when the Magi arrived.
it was true that the magi followed the stars (constellations-note not a star) for direction to Bethlehem. due to the observation of clusters of astronomical phenomenal events happening in 3BC/2BC Jupiter is expected to be closer to earth and will stand still for several hours in 68 latitude right above Bethlehem.. Then on December 25, 2BC, when the planet Jupiter came to its stationary point in mid-Virgo and was in meridian over Bethlehem, the Magi arrived in Bethlehem bearing gifts meant for a king. the romans was very diligent in recording the activities of the empire and astronomical records of 3BC/2BC is proven and accepted by modern astronomers to had happened. when we put the puzzle into pieces base on roman, astronomical and biblical records Christ was born sept. 11 3BC. however you have to explain that to the pope. me ill just sit around and try to experience how lonely i could be.