Q: WHAT YEAR DID JEHOHASH/JOASH'S REIGN END IN ISRAEL?
A: IT DEPENDS WHAT CALENDAR YOU ARE USING!
On the Gregorian calendar (the one you might have on your wall) the year was 769 BC.
On the Hebrew calendar, sometimes called the biblical calendar, the year was 3278 AM.
2 Kings 13:10 – In the thirty and seventh year of Joash king of Judah began Jehoash the son of Jehoahaz to reign over Israel in Samaria, and reigned sixteen years.
2 Kings 14:23 New King James Version (NKJV)
Jeroboam II Reigns in Israel
23 In the fifteenth year of Amaziah the son of Joash, king of Judah, Jeroboam the son of Joash, king of Israel, became king in Samaria, and reigned forty-one years.