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.

Of what is the Sabbath commandment a part?
Why is a national Sunday law demanded?
Until what time were the saints to he persecuted under the Roman power?
What reason does Paul give to encourage us to entertain strangers?
How numerous are these wicked spirits, or fallen angels?
What is the measurement of the city?
What is the height of the wall?

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