Haggai began his ministry around 520 BC, whilst Amos is said to have prophesied during the reigns of Uzziah of Judah and Jeroboam II, probably around 760 BC.
Jeroboam | Jeroboam II |
Among his actions was a siege of Damascus in the time of Ben-Hadad III in 796 BCE, which led to the eclipse of the Aramaean Kingdom of Damascus and allowed the recovery of Israel under Jehoash (who paid the Assyrian king tribute at this time) and Jeroboam II.