Well JB, I wouldnt stake my life on exactly, but I think ‘about 30’ means what it says. My estimate of Jesus birth is spring 5 BC (April?) and his baptism, end autumn 26 BC (Nov?), so that would make him 30yrs + 7months.
Forgive me for mentioning this,

but I have published a book that would interest you.
The Atonement Clock is my research on the ancient Sabbatical and Jubilee calendar cycles. It was only possible to find these cycles by closely studying the internal chronologies contained in both Testaments of the Bible. They are related to the coming of Messiah, and tie in with the dates that we are talking about.
I have received a lot of interest, and would appreciate an assessment of my work from a Catholic scholars perspective. I don’t have an online version, but the ‘readers edition’ is quite inexpensive. If a poster on this thread would like to get my ‘academic edition’, please send me a PM and I will provide a coupon.
Amazon here:
My store here: