en_tn_condensed/jer/52/31.md

in the thirty-seventh year of the exile of Jehoiachin

after Jehoiachin had been an exile for more than 36 years (See: rc://en/ta/man/translate/translate-ordinal)

in the twelfth month, on the twenty-fifth day of the month

This is the twelfth and last month of the Hebrew calendar. The twenty-fifth day is near the middle of March on Western calendars. (See: rc://en/ta/man/translate/translate-hebrewmonths and rc://en/ta/man/translate/translate-ordinal)

It happened

This phrase is used here to mark the beginning of a new part of the story.

Awel-Marduk

He became the king of Babylon after Nebuchadnezzar. (See: rc://en/ta/man/translate/translate-names)