"Daniel knew when it ended because he knew when it started. It started when he went to Babylon in 607. That is when the 7 times started counting when he went to Babylon."
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Daniel was not taken to Babylon in 607 BC.
He was taken there in 605 BC.
He was taken there in 605 BC because the Jews refused to serve the King of Babylon from 609 BC and instead had made or had tried to make an alliance with Egypt, so Babylon came, gave them a slap and 'took spoil' putting them in their place, Daniel being part of this spoil.
We know this because Daniel was already there, in Babylon, for Nebuchadnezzar's 2nd year, aka 604 BC, where he was then on hand to interpreted the Kings dream:
Daniel 2:1 In the second year of his kingship, Neb·u·chad·nezʹzar had a number of dreams, and he was so agitated that he could not sleep.
Nebuchadnezzars 1st year was 605 BC - when Daniel was taken.
Nebuchadnezzars 2nd year was 604 BC
Nebuchadnezzars 19th year was 586 BC, when Jerusalem was finally destroyed:
2 Kings 25:8-10 In the fifth month, on the seventh day of the month, that is, in the 19th year of King Neb·u·chad·nezʹzar the king of Babylon, Neb·uʹzar·adʹan the chief of the guard, the servant of the king of Babylon, came to Jerusalem. He burned down the house of Jehovah, the king’s house, and all the houses of Jerusalem; he also burned down the house of every prominent man. And the walls surrounding Jerusalem were pulled down by the entire Chal·deʹan army that was with the chief of the guard.
Previous to this, Nebuchadnezzars again HAD to came to Jerusalem because it had still not properly subjected itself after the slap of 605 BC. This time, a great many were further taken captive. This occured in 697 BC.
This additional, larger exile, occurred, according to Jeremiah, in Nebuchadnezzars 8th year or 605 - 8 = 697 BC.
2 Kings 24:12 King Je·hoiʹa·chin of Judah went out to the king of Babylon, along with his mother, his servants, his princes, and his court officials; and the king of Babylon took him captive in the eighth year of his reign.
2 Kings 24:14 He took into exile all Jerusalem, all the princes, all the mighty warriors, and every craftsman and metalworker—he took 10,000 into exile. No one was left behind except the poorest people of the land.
That the exile began, WAY BEFORE THE CITY FELL, can be seen from examining Ezekiel's later words:
Ezekiel 40:1 In the 25th year of our exile, at the beginning of the year, on the tenth day of the month, in the 14th year after the city had fallen, on that very day the hand of Jehovah was upon me, and he took me to the city.
The 25th year of exile is refering to the big one which occured in 597 BC
25 years after this was 597 - 25 = 572 BC where Ezekiel receives the temple vision.
NOTE THAT THIS IS 14 YEARS AFTER THE FALL OF THE CITY.
572 + 14 = 586 BC
JERUSALEM FELL IN 586 BC
THE JEWS WERE HANDED OVER TO SERVE BABYLON FROM 609 BC
Because they refused to subject, this ended up in exile 1, a small one, this taking place in 605 BC - where Daniel was taken captive.
A larger exile in 697 BC
Then in Jerusalem's destruction in 586 BC
ALL THIS BECAUSE THEY DID NOT SUBJECT FROM 609 BC
Jeremiah 25:11, 12 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.”’ “‘But when 70 years have been fulfilled, I will call to account the king of Babylon and that nation for their error,’ declares Jehovah, ‘and I will make the land of the Chal·deʹans a desolate wasteland for all time.
Some people just cannot listen and instead chose suffering...
