Jeremiah 32:1

Jeremiah Buys a Field

32:1 In the tenth year that Zedekiah was ruling over Judah the Lord spoke to Jeremiah. ¹  That was the same as the eighteenth year of Nebuchadnezzar.

Jeremiah 39:1

39:1 King Nebuchadnezzar of Babylon came against Jerusalem with his whole army and laid siege to it. The siege began in the tenth month of the ninth year that Zedekiah ruled over Judah. ² 

[32:1]  ¹ tn Heb “The word which came to Jeremiah from the Lord in the eleventh year of…” See 7:1; 11:1; 18:1; 21:1; 30:1 for this same formula.

[39:1]  ² sn 2 Kgs 25:1 and Jer 52:4 give the more precise date of the tenth day of the tenth month of the ninth year which would have been Jan 15, 588 b.c. The reckoning is based on the calendar that begins the year in the spring (Nisan = March/April).