Another more difficult method of figuring out when Jesus was born is to go back to Luke 1:5 and see that Zacharias was in the Temple on the "course" of Abijah. That is the 8th course according to 1Chron 24:10.
You have to realize that ALL priests will be in the Temple on Passover, Pentecost, and Tabernacles. All the rest of the weeks will rotate between the rest of the priests. Knowing Elizabeth got pregnant when her husband came home from service at the Temple, we know John the Baptist was born on Passover and Jesus was born 6 months later which would be on Tabernacles. Tabernacles is always around Sept./Oct. and never later.
There is no Biblical Feast day marked later than Tabernacles.
Dec 25th comes from the supposed BD of Tammuz, the supposed son of Nimrod, the originator of the Babylonian religion. The Roman church stopped observation of the Leviticus Feast Days in 325 AD at the Council of Nicaea along with changing the 4th Commandment to observe Sunday and ditch the Sabbath. They then observed Tammuz's BD and feast of Ishtar became Easter. Ezekiel 8 calls these days an abomination. Every year since the same conversations come up about "we can't know when Jesus was born" and it was to cold in December for sheep to be out. All the info is there if you just read the Scriptures. If nothing else just Google "Christmas" and read.
Complete Hislopian nonsense. The Babylonians had their own calendar, and knew nothing of any month of "December". (Incidentally, per Josephus, the Jewish civil calendar at the time of the conquest was derived from the Babylonian calendar.)
The Roman church stopped observation of the Leviticus Feast Days in 325 AD at the Council of Nicaea along with changing the 4th Commandment to observe Sunday and ditch the Sabbath.
Gentile Christians never observed Jewish feasts in any great numbers, because they read and understood the Pauline epistles, which you evidently do not.
Nicaea had nothing to do with worshipping on Sunday, either, which was well established by that time. Even SDA scholars now admit that Sunday worship long predated Nicaea.
They then observed Tammuz's BD and feast of Ishtar became Easter.
Nicaea conducted business in Greek, not English, a language which wouldn't exist for another thousand years. They fixed the date for the holy day commemorating the Resurrection of Christ. They called that holiday PASCHA. Does that sound anything like "Ishtar" to you? It shouln't, because it had nothing to do with her.
I'm sorry you believe such ahistorical made-up garbage, but that's what it is.