When did Nebuchadnezzar come to Jerusalem?

When did Nebuchadnezzar come to Jerusalem?
In the third year of the reign of Jehoickim.	Sometime after the fourth year.
Dan.1:1 In the third year of the reign of Jehoiakim king of Judah came Nebuchadnezzar king of Babylon unto Jerusalem.	Jer.25:1 In the fourth year of Jehoiakim the son of Josiah king of Judah, that was the first year of Nebuchadrezzar king of Babylon.