At what time was Daniel's second vision given?

Answer

"In the first year of Belshazzar king of Babylon Daniel had a dream and visions of his head upon his bed:
then he wrote the dream, and told the sum of the matters." Dan. 7:1.
NOTE - That is, in the first year of Belshazzar's office as associate king with his father
Nabonadius, or 540 BC.

What change is thus brought about?
When God brought His people out of Egypt, how did He republish His law?
On what did God write the Ten Commandments?
How did Christ's death on the cross affect the whole sacrificial system?
When were the first of these signs to appear, and what were they to be?
To whom is salvation promised at Christ's appearing?
What promise is made to those that mourn?

Questions & Answers are from the book Bible Readings for the Home Circle