@Scholar: What is your evidence, other than the Bible. Basically without using the Bible or WTBTS references, using only 'scholarly' accepted references.
Planetary positions should be the simplest to refer, which of the references talks about a very significant portent that would've been notable had ANYTHING coincided in 607, especially the destruction of a major city.
If you say the 70 years is literal, even the Bible wouldn't agree on when the 70 years starts and ends:
And all this land will be reduced to ruins and will become an object of horror, and these nations will have to serve the king of Babylon for 70 years.”
Jeremiah 25:11 – New World Translation
in the first year of his reign I, Daniel, discerned by the books the number of years mentioned in the word of Jehovah to Jeremiah the prophet to fulfill the desolation of Jerusalem, namely, 70 years.
Daniel 9:2 - New World Translation
Based on the verses above, either they are in conflict, given Daniel references Jeremiah, or they aren't referencing an event, but rather a sign.
Daniel talks about "discerned by the books the number of years" which given he supposedly LIVED at the time, he would've "KNOWN", not needed to discern. This clearly shows 70 years wasn't literal, since he had to 'discern' the number.
So are you talking about the "desolation of Jerusalem" or "serving the king of Babylon"? Those are two different events, one came before the other, when did King Jehoiakim started sending tribute, why is the Bible even unclear about the event, even though they supposedly reference each other directly.