1 sn Darius is Darius Hystaspes, king of Persia from 522-486
2 sn The eighth month of Darius’ second year was late October – late November, 520
3 sn Both Ezra (5:1; 6:14) and Nehemiah (12:16) speak of Zechariah as a son of Iddo only. A probable explanation is that Zechariah’s actual father Berechiah had died and the prophet was raised by his grandfather Iddo. The “Zechariah son of Barachiah” of whom Jesus spoke (Matt 23:35; Luke 11:51) was probably the martyred prophet by that name who may have been a grandson of the priest Jehoiada (2 Chr 24:20-22).
4 sn The twenty-fourth day of the eleventh month…in Darius’ second year was February 15, 519