In order to justify his 586 date, Thiele had assumed that the years of captivity for Jeconiah must be calendar years starting in Nisan, in contrast to the Tishri-based years that he used everywhere else for the kings of Judah. He also assumed that Jeconiah's captivity or exile was not to be measured from Adar of 597 BCE, the month Nebuchadnezzar captured Jerusalem and its king according to the Babylonian Chronicle, but in the next month, Nisan, when Thiele assumed Jeconiah began the trip to Babylon. Granting these assumptions, the first year of captivity would be the year starting in Nisan of 597 BCE. The twenty-fifth year of captivity would start in Nisan of 573 BCE, (573/572) twenty-four years later. Years of captivity must be measured in this non-accession sense (the year in which the captivity started was considered year one of the captivity), otherwise the 37th year of captivity, the year in which Jeconiah was released from prison, would start on Nisan 1 of 560 BCE (597 − 37), two years "after" the accession year of Amel-Marduk, according to the dating of his accession year that can be fixed with exactitude by the Babylonian Chronicle. Thiele then noted that Ezekiel 40:1 says that this 25th year of captivity was 14 years after the city fell. Fourteen years before 573/572 is 587/586, and since Thiele is assuming Nisan years for the captivity, this period ended the day before Nisan 1 of 586. But this is three months and nine days before Thiele's date for the fall of the city on 9 Tammuz 586 BCE. Even Thiele's assumption that the years of captivity were measured from Nisan does not reconcile Ezekiel's chronology for the captivity of Jeconiah with a 586 date, and the calculation given above that uses the customary Tishri-based years yields the summer of 587, consistent with all other texts in Ezekiel related to Jeconiah's captivity.