How can the sun possibly illuminate the bottoms of clouds on the flat Earth model?

A question I’ve often heard from people is, how can a sun moving above the clouds, parallel to the circular flat Earth possibly illuminate the bottom of the clouds, like we often see happen during sunrise and sunsets? Based on the results I’ve been having with the previous experiments I’ve been doing, I decided to test a theory I had. Sure enough, it worked! Check it out.

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