The Sun is God's light. Night is when he veils it, so that he may test us. Night has been known for many thousands of years as a time of darkness and of ill. It would be a poor test if you could regain God's light with merely a telescope. Heaven (the Sun) is no longer visible because you are expected to manage the test of darkness.
How do you explain moonlight and starlight if night time is a time of darkness ?
Do you mean total darkness ? How do you explain how the moon shines ?
Are you basing your belief in a flat earth solely on the quotation from Isaiah 40:22 ?
If so I would suggest you consult some Biblical Scholar for the explanation.
http://www.crivoice.org/circle.html
Night is not always a time of darkness and ill . I have stood many "Mid Watches" (Midnight until 8:00 AM) and have usually found them to be necessary, productive and even fascinating in the Navy and in civil service air traffic control.The world does not stand still at night in whatever time zone you happen to be in. It is always day and night at some time somewhere on the earth every 24 hours.
Just because people claim to serve God does not mean they do. Anyone can call themselves a Christian, but not everyone is.
The stars are demons, who seek to fool humans into disbelieving God's word. The night is not a time of literal darkness, but of spiritual: God's light, the Sun, is turned away from us. Demons become visible, and night has been considered throughout history to be the more dangerous time.
The moon shines because it is Christ's light. It came into being two thousand years ago to guide men to where Christ was born, as the only object whose new existence would be notable and which moves enough to be followed.
There are other verses. For example:
Matthew 4:8 Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world, and the glory of themTo see all the kingdoms of the world from one point means that the world is flat.