Luk 1:5 In the days of Herod the king of Judea, there was a certain priest named Zacharias, of the daily course of Abijah. And his wife was of the daughters of Aaron, and her name was Elizabeth.
Luk 1:6 And they were both righteous before God, walking blameless in all the commandments and ordinances of the Lord.
Luk 1:7 And no child was born to them, because Elizabeth was barren. And both were advanced in their days.
Luk 1:8 And it happened in his serving as priest in the order of his course before God,
Luk 1:9 according to the custom of the priests, entering into the Holy Place of the Lord, it was Zacharias’ lot to burn incense.
1Ch 24:1 And these are the divisions of the sons of Aaron. The sons of Aaron were Nadab and Abihu, Eleazar and Ithamar.
1Ch 24:2 But Nadab and Abihu died before their father, and they had no sons. And Eleazar and Ithamar were priests.
1Ch 24:3 And David divided them according to their offices in their service, even Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar.
1Ch 24:4 And more sons of Eleazar were found than the sons of Ithamar, for heads of the men. And they divided them. For the sons of Eleazar were: sixteen chiefs to their father’s house; and eight to the sons of Ithamar, to the house of their fathers.
1Ch 24:5 So they divided them by lots, these with these. For these were the rulers of the sanctuary and rulers of God, of Eleazar’s sons and Ithamar’s sons.
1Ch 24:6 And Shemaiah the son of Nethaneel the scribe, of the Levites, wrote them before the king, and the rulers, and Zadok the priest, and Ahimelech the son of Abiathar, and the rulers of the fathers of the priests and Levites. One father’s house was taken for Eleazar, and one taken for Ithamar.
1Ch 24:7 And the first lot came out for Jehoiarib, the second to Jedaiah,
1Ch 24:8 the third to Harim, the fourth to Seorim,
1Ch 24:9 the fifth to Malchijah, the sixth to Mijamin,
1Ch 24:10 the seventh to Hakkoz, the eighth to Abijah,
1Ch 24:11 the ninth to Jeshua, the tenth to Shecaniah,
1Ch 24:12 the eleventh to Eliashib, the twelfth to Jakim,
1Ch 24:13 the thirteenth to Huppah, the fourteenth to Jeshebeab,
1Ch 24:14 the fifteenth to Bilgah, the sixteenth to Immer,
1Ch 24:15 the seventeenth to Hezir, the eighteenth to Aphses,
1Ch 24:16 the nineteenth to Pethahiah, the twentieth to Jehezekel,
1Ch 24:17 the twenty first to Jachin, the twenty second to Gamul,
1Ch 24:18 the twenty third to Delaiah, the twenty fourth to Maaziah.
1Ch 24:19 These were the orderings of them in their service to come into the house of YHWH, according to their ordinance, to Aaron their father, as YHWH God of Israel had commanded him.
The Talmud records that each shift was a week. From noon sabbath to noon sabbath
Josephus records that these courses were being followed in the 1st century.
Josephus Antiquities 7:14.7
He divided them also into courses: and when he had separated the priests from them, he found of these priests twenty-four courses, sixteen of the house of Eleazar, and eight of that of Ithamar; and he ordained that one course should minister to God eight days, from sabbath to sabbath. And thus were the courses distributed by lot, in the presence of David, and Zadok and Abiathar the high priests, and of all the rulers; and that course which came up first was written down as the first, and accordingly the second, and so on to the twenty-fourth; and this partition hath remained to this day.
Yahshua was born in the Fall of 5 BC, therefore John the Baptist was born in the Spring of 5 BC and conceived 9 months earlier in the summer of 6 BC. In the year 6 BC, the first day of the first month was a weekly Sabbath March 20.
Zachariah was of the 8th course. He was assigned the 9th and 10th weeks from the beginning of the year. Iyar 27 – Sivan 5 (May 15-22) and Sivan 5 – Sivan 12 (May 22-29). Sometime during these two weeks Gabriel appeared to him. It is a possibility that this occurred on Pentecost which was Sivan 6 (May 16). Zachariah returned home on May 29 so it can be assumed that Elizabeth conceived May 30 – June 12 in the year 6 BC. 6 months later Mary visited Elizabeth (Luk 1:36) at the time of Hanukkah. John would have been born sometime between Adar 19 & Nisan 3 or February 27 – March 11 5 BC. Mary’s conception would have been around Kislev 17-30 Nov 28- Dec 11, this brings Messiah’s birth to around the time of Elul 24-Tishri 15 or August 27- September 8.
This would mean that Yahshua was conceived on Hanukkah (the Festival of Lights) and born on Sukkot (the Festival of Lights). Hanukkah is also an 8 day festival that was based on Sukkot.
2Ma 10:6 And they kept the eight days with gladness, as in the feast of the tabernacles, remembering that not long afore they had held the feast of the tabernacles, when as they wandered in the mountains and dens like beasts.
2Ma 10:7 Therefore they bare branches, and fair boughs, and palms also, and sang psalms unto him that had given them good success in cleansing his place.
2Ma 10:8 They ordained also by a common statute and decree, That every year those days should be kept of the whole nation of the Jews.
During the Sukkot season (John 7-8) Yahshua proclaimed the following:
Joh 8:12 Then Jesus again spoke to them, saying, I am the Light of the world. The one following Me will in no way walk in the darkness, but will have the light of life.
The building of the Tabernacle
Exo 25:8 And let them make me a sanctuary; that I may dwell among them.
Exo 25:9 According to all that I shew thee, after the pattern of the tabernacle, and the pattern of all the instruments thereof, even so shall ye make it.