On the Gregorian calendar (the one you might have on your wall) the year was 705 BC.
On the Hebrew calendar, sometimes called the biblical calendar, the year was 3342 AM.
2 Kings 15:8 New King James Version (NKJV)
8 In the thirty-eighth year of Azariah king of Judah, Zechariah the son of Jeroboam reigned over Israel in Samaria six months.
2 Kings 15:13 New King James Version (NKJV)
Shallum Reigns in Israel
13 Shallum the son of Jabesh became king in the thirty-ninth year of Uzziah king of Judah; and he reigned a full month in Samaria.
2 Kings 15:17 New King James Version (NKJV)
17 In the thirty-ninth year of Azariah king of Judah, Menahem the son of Gadi became king over Israel, and reigned ten years in Samaria.