Date and Time Period of the Book of Jeremiah

Date - 629 BC Approximately. The prophet Jeremiah began his ministry during the reign of King Josiah, and he prophesied the Word of the Lord until the destruction of Jerusalem in 586 BC when Nebuchadnezzar of Babylon came and destroyed the city and her Temple (Jeremiah 1), and he continued to prophesy even after this event.

Link: https://bible-history.com/old-testament/bookofjeremiah