Can a Setting Sun Cast a Shadow Upwards

I watched a video by flat earther Phuket Word a long time ago where he claimed the sun couldn t cast a shadow above a horizontal level line. (It s been awhile and I don t bother with Phuket Word anymore, but if I can find the link to the video, I ll update this description with it. ) Found it: Shadows on a flat earth will never go higher that the object casting the shadow. Though we ve seen that the sun can and does illuminate the underside of clouds, I ve been wanting to try a controlled demo to see if I could detect a shadow being cast upward at sunset. The horizon was not as sharp as I had hoped, but I think I did managed to capture the fact that the sun does dip low enough to cast a shadow above horizontal. I d like to try again from a higher elevation and with a clearer horizon. I welcome any constructive critiques before then, especially on how best to present this so it can be cited a trustworthy evidence of the fact