I may of found my problem thinking in why I can't see that the beam I witnessed could have been a contrail shadow. I imagined the light from the sun as coming from the small sphere of the sun that I see. I can see by your drawing I am seeing it wrong. Okay I am getting closer to understanding, gotta go and do stuff so I will use this new understanding now. I have to go draw some pictures of my own. I may be back.A typically terrible illustration.