Luke 3:1 “In the fifteenth year of the reign of Tiberius Caesar” – convention for counting years (NOT what the actual A.D. year was)

1In the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being governor of Judea, and Herod being tetrarch of Galilee, and his brother Philip tetrarch of the region of Ituraea and Trachonitis, and Lysanias tetrarch of Abilen…