When was Jesus born?

While trying to find and answer to this question I came across this explanation by Andreas Köstenberger - October 4th, 2007. posted at http://www.biblicalfoundations.org/bible

It states that Jesus’ birth most likely took place in late November of 5 B.C. (the most authoritative treatment of which I am aware is Paul L. Maier, “The Date of the Nativity and the Chronology of Jesus’ Life,” in Chronos, karios, Christos: Nativity and Chronological Studies Presented to Jack Finegan [ed. J. Vardaman and E. M. Yamauchi; Winona Lake, IN: Eisenbrauns, 1989], 113–30). Based on a christian perspective if you look at Luke 3:23, Jesus was “about 30 years old” when he began his ministry. If Jesus was born in 5 B.C. (as argued above) and began his ministry, as is indicated by all four Gospels, shortly after that of John the Baptist (that is, in the latter part of the year A.D. 29), this would mean that Jesus was about 33 years old when he began his public ministry (see H. W. Hoehner, Chronological Aspects of the Life of Christ [Grand Rapids: Zondervan, 1977], 31–37 and B. Messner, “’In the Fifteenth Year’ Reconsidered: A Study of Luke 3:1,” Stone-Campbell Journal 1 [1998]: 201–11).

John’s Gospel records Jesus’ appearance at at least 3 Passovers: (1) in Jerusalem (2:13, 23); (2) in Galilee (6:4); and (3) again in Jerusalem (11:55; 12:1). In addition, it is likely that he attended a fourth Passover not recorded in John but recorded in the Synoptics (Matt 12:1 pars.?). This adds up to a length of about 3 ½ years for Jesus’ ministry. If he began his ministry in late A.D. 29, this brings us to A.D. 33 for the crucifixion. It so happens that because of astronomical calculations A.D. 30 and 33 are the only possible dates for Jesus’ crucifixion as far as the date of Passover in these two years is concerned (for the dating of the four Passovers in question see esp. C. J. Humphreys and W. G. Waddington, “The Jewish Calendar, a Lunar Eclipse, and the Date of Christ’s Crucifixion,” Tyndale Bulletin 43 [1992]: 331–51, esp. 335).

Finally, John 2:20 says that the temple was completed 46 years ago (see for this translation A. J. Köstenberger, John [BECNT; Grand Rapids: Baker, 2004], 109–10). According to Josephus, the renovation of the temple building proper started in 20/19 B.C. (Antiquities 15.11.1 §380), with completion 18 months later in 18/17 B.C. (Antiquities 15.11.6 §421). Again, counting from 18/17 B.C., adding 46 years brings us to A.D. 29 (there was no year zero)—a great way to check our math above!

Another source, http://wiki.answers.com, indicates that he was probably born about 4 B.C. Jesus was born on or before 4BCE, because Herod died 4BCE.

Jesus was born on or after 6CE, because Cyrenius became governor of Syria on 6CE:-

Luke2:2 And this taxing was first made when Cyrenius was governor of Syria. 2:3 And all went to be taxed, every one into his own city. 2:4 And Joseph also went up from Galilee, out of the city of Nazareth, into Judaea, unto the city of David, which is called Bethlehem; (because he was of the house and lineage of David:) 2:5 To be taxed with Mary his espoused wife, being great with child.