If we can get a handle on the length of His public ministry, then we can be pretty sure. Are there any clues as to the length of his public ministry from the scriptures?
there are a few likely candidates, but personally i’d say that anyone which rejects the ressurection being on a Sunday is pretty suspect.
First Passover [John 2:13]; Second passover [John 6:4}; Third Passover [John 13:1]. This would indicate a minimum of three years and He began his ministry at the age of 30 [Luke 3:23].
Since He was born in the Fall of the year....His ministry probably lasted about 3 1/2 years.
There are only two years (nearby) with a Passover on a Wednesday that would qualify as the year of crucifixion....A.D. 30 and A.D. 27. If he were 33 1/2 years old at death in 30 A.D. he would have been born in 3 B.C. Herod died in either 1 or 2 B.C. depending on the historian so the birth date was probably 3 B.C.