The other day there was a program on that tried to pinpoint Jesus' birthday using Luke 1 as a guide. The starting point of the theory claims from history that Zacharias was in the division of Abijah, which served around June 20-25. This is where the timeline from the Bible starts. It says John was concieved about then which means he was born around March of the next year. Luke 1:26 says Jesus followed by 6 months, which means He could have been born in late September of some year around 4 BC. Has anyone else ever heard of this, and if not, do you have any ideas when the date might have been?