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.
The most definitive date that I have found for Herod's death is April 1st, 4 BC. That makes the birth of Christ 5 BC and his 30th birthday in 26 AD, the 15th year of the reign of Tiberius Caesar [Luke 3:1]. Three and a half years later his death in 30 AD.
Romanists have to twist everything and search the astrological charts and tea leaves to try to place his death at 33AD because that year Passover was a Friday. Their problem with their 33 AD number is that it doesn't leave much time for Saul's multi-year persecution of Jewish Christians before his conversion on the road to Damascus.