To get absolute dates for Nebuchadnezzar’s reign, we do not have to rely on VAT 4956 alone. In fact, we can get along well enough without it. There are other astronomical tablets that help us establish the dating of the Neo-Babylonian dynasty, which in turn, is the only way to synchronize Bible chronology, since the Bible itself contains no absolute dates.
The above video primarily focuses on three lunar eclipse tablets that establish Nebuchadnezzar’s reign: LBAT 1419, LBAT 1420, LBAT 1421. Even these are not the only ‘game in town’, but they are enough to provide dozens of absolute dates that prove Nebuchadnezzar’s 18th year, the year Jerusalem was destroyed, was 587 BC.
The sky does not lie!