Was Jesus biblically born in September?
If Jesus were born in September, the course of priest would begin in Nisan or Iyyar. In fact, Ezra 7: 8-10 and Rabbi Jose ben Halafta (150 AD) indicates that the course of priest began in Av, instead of Nisan or Iyyar.
And he came to Jerusalem in the fifth month, which was in the seventh year of the king. For upon the first day of the first month began he to go up from Babylon, and on the first day of the fifth month came he to Jerusalem, according to the good hand of his God upon him. For Ezra had prepared his heart to seek the law of the LORD, and to do it, and to teach in Israel statutes and judgments. (Ezra 7: 8-10)
Whence do we know that the second Temple was also destroyed on the 9th of Abh? We have learned in a Boraitha: “A happy event is credited to the day on which another happy event happened, while a calamity is ascribed to the day when another calamity occurred; and it was said that when the first Temple was destroyed it was on the eve preceding the 9th of Abh, which was also the night at the close of the Sabbath and also the close of the Sabbatical year. The watch at the time was that of Jehoyoreb, and the Levites were chanting in their proper places, at that moment reciting the passage [Psalms, xciv. 23]: “And he will bring back upon them their own injustice, and in their own wickedness will he destroy them”; and they did not have time to end the passage, which concludes, “yea, he will destroy them–the Lord our God,” before the enemy entered and took possession of the Temple. This happened also at the destruction of the second Temple. (Jerusalem Talmud, Tractate Taanite, Chapter 4)
If Jesus were born in October, Gabriel would meet Zacharia in June. Luke 1: 9-10 reported that Gabriel met Zacharia when a whole nation gathered within and without Jerusalem Temple.
According to the custom of the priest’s office, his lot was to burn incense when he went into the temple of the Lord. And the whole multitude of the people (λαος = nation) were praying without at the time of incense. (Luke 1: 9-10)
These hints refuted opinion of Jesus birth in October. Jesus was not born in October.
1http://www.jewishvirtuallibrary.org/jsource/Talmud/taanit4.html; akses 26/4/2015 19:13