'Month' in the Bible

In the second year of King Darius, on the first day of the sixth month, the word of the Lord came through Haggai the prophet to Zerubbabel son of Shealtiel, the governor of Judah, and to Joshua son of Jehozadak, the high priest:

on the twenty-fourth day of the sixth month, in the second year of King Darius.

On the twenty-first day of the seventh month, the word of the Lord came through Haggai the prophet:

On the twenty-fourth day of the ninth month, in the second year of Darius, the word of the Lord came to Haggai the prophet:

“Consider carefully from this day forward; from the twenty-fourth day of the ninth month, from the day the foundation of the Lord’s temple was laid; consider it carefully.

The word of the Lord came to Haggai a second time on the twenty-fourth day of the month: