Footnote

a Tiberius succeeded Augustus as emperor at Augustus’ death, August 19, 14 C.E. John’s baptizing work began in the spring of the fifteenth year of Tiberius, which ran from August of 28 C.E. to August of 29 C.E. Jesus was baptized in the fall, about the first of October, which would be in the sixteenth year of Tiberius.