This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

On the 27th day of the month.

2 Kings 25:27 View context

And it came to pass in the seven and thirtieth year of the captivity of Jehoiachin king of Judah, in the twelfth month, on the seven and twentieth [day] of the month, [that] Evil-merodach king of Babylon in the year that he began to reign did lift up the head of Jehoiachin king of Judah out of prison;

On 25th day of the month.

Jeremiah 52:31 View context

And it came to pass in the seven and thirtieth year of the captivity of Jehoiachin king of Judah, in the twelfth month, in the five and twentieth [day] of the month, [that] Evil-merodach king of Babylon in the [first] year of his reign lifted up the head of Jehoiachin king of Judah, and brought him forth out of prison,