Were you the kid who always got someone else to do your homework?
Flat earthism can't do it. They don't have the illustration. It's like a flat hourglass but the hourglass needs the intersection of two planes at 90". Psalm 22 ends with the words "in longitudinem dierum", pour de longs jours. Let the Sun himself be the psalmist there, since he does have long days, and he's always descending and rising
at the same time over the great circle of longitudes around the Earth. The Sun lights up the face of the Earth in 180" degrees of longitude for a side as it moves in close connection between longitude and time measurement around the globe.
The Earth's atmosphere captures and magnifies sunlight on a great and total scale across the whole face of it, yet always only half of the Earth at a time, since it is a sphere. A flat Earth can't show the hours of the day around the Earth and the phases of the Moon at the same time truly. They have to make a crazy desk-like tabulation with the sun like a little flashlight just lighting up little focused parts at a time. They also have to have everybody on "one side", when they mean the surface. If one wants to call the whole spherical surface one side, they are all on one side, of course, the one side that goes all the spherical way around, but only half or one face is day and the other is always night. The Sun doesn't disappear behind a mountain or a curtain at the end of the day. It never disappears. It's just around the other side when it's night as it lights up the whole other side.