Actually we can deduce the year Jesus was born from scripture and historical writings. No, it was not the dead of winter either. That was another of Constantine's tricks. The scene here is within a year of Jesus' birth:
Matt. 2:19-23
"But when Herod was dead, behold, an angel of the Lord appeareth in a dream to Joseph in Egypt, Saying, Arise, and take the young child and his mother, and go into the land of Israel: for they are dead which sought the young child's life. And he arose, and took the young child and his mother, and came into the land of Israel. But when he heard that Archelaus did reign in Judaea in the room of his father Herod, he was afraid to go thither: notwithstanding, being warned of God in a dream, he turned aside into the parts of Galilee: And he came and dwelt in a city called Nazareth: that it might be fulfilled which was spoken by the prophets, He shall be called a Nazarene."
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See Article History
Antipater, (died 4 BC), son of
Herod the Great, who conspired against his half brothers Aristobulus and Alexander for the succession to the throne of Judaea and secured their execution (7 or 6 BC). The following year he was tried for plotting against Herod and Pheroras, Herod’s brother, and was executed five days before his father’s death. So Herod the Great died in the same year.
Antipater, (died 4BC) And was replaced by Herod.
https://www.britannica.com/biography...erod-the-Great
Matt 2:1 Now when Jesus was born in Bethlehem of Judaea in the days of Herod the king, behold, there came wise men from the east to Jerusalem,
(NOTE: Jesus is born after 4BC)
Jesus was most likely conceived in Dec 4 B.C, during Hanukkah (Feast of Dedication/Feast of Lights). Jesus is the light of the world John 8:12 portrayed a Servant in Isa 53. It's the servant candle the lights all other lights on the Hanukkah Menorah.
Jesus is born in Sept 3 B.C. during the Feast of Trumpets at Tekiah ha-Gadol. Circumcised 8 days later on Yom Kippur. Then dwelled/tabernacled in a manger (sukkah) with his parents during the Feast of Tabernacles (Sukkot) that yr.
Luke 3:23 And Jesus himself began to be about thirty years of age
Jesus ministry begins shortly after he turns 30 AD in 27AD during the Feast of tabernacles, John 7:37-38. Continues through 3 Passovers (John 2:13, 6:4, 11:55-57). And ends 3 1/2 years later with his death on Passover 30AD