If recorded dates of human, earthly and universal phenomena and episodes are some things to get by and consider or better still if we have to be technical about it, Jesus was born in October 10, 12 BC.
If you recall the "Star Of Bethlehem" or what we call today as Halley's Comet, there is no other explanation but to concede that indeed Christ was born on the 12th BC, and between August to October 10.
Halley's comet visits which is the most resplendent and apparent comet whenever it passes our skies had been recorded since 240 BC. And this comet comes every 75 to 77 years and that it is possible to be seen twice in one's lifetime. I was fortunate that I saw Halley's comet when it last visited the earth, last February, 1986.
There were two very popular and recorded visits of the Halley's comet, and that was October 10, 12th BC and January 25, 66 AD surrounding the birth of Christ. Both were recorded by astronomers, scientists and historians of those times from different nations all over. Now if we have to be technical and logical, the most probable date nearest would be October 10, 12th BC. Although there were other possible comets that visited our skies, none were more popular and resplendent than the famous and majestic, Halley's Comet.
If indeed this was the case of Christ's Nativity, then Christmas should be in October 10 and not December 25. Personally though, I have grown accustomed to ending every year in our lives with a happy note. The birth of our Lord, Jesus Christ.