'Second' in the Bible

In the eighth month of the second year [of the reign] of Darius [the king of Persia], the word of the Lord came to Zechariah (the Lord remembers) the son of Berechiah, the son of Iddo, the prophet, saying,

On the twenty-fourth day of the eleventh month (Feb 15, 519 b.c.), which is the month of Shebat, in the second year of [the reign of] Darius, the word of the Lord came to Zechariah the prophet, the son of Berechiah, the son of Iddo, as follows:

and he said to the second angel, “Run, speak to that young man, saying, ‘Jerusalem will be inhabited [like villages] without walls [spreading out into the open country] because of the great number of people and livestock in it.

And a second time I said to him, “What are these two olive branches which are beside the two golden pipes by which the golden oil is emptied?”

The first chariot had red horses (war, bloodshed), the second chariot had black horses (famine, death),