Using the TPE Desktop Web App, Part 7: Six-Degree Shadow Circle As of March 2018, the web app shows the "six-degree shadow circle" as you adjust the timeline. This short video explains: Have more questions? Submit a request 2 Comments Date Votes 1 Jack DeAngelis May 09, 2018 13:07 Good explanation and GREAT web app, thanks! 0 Ron Koppel June 25, 2018 16:32 All 7 tutorials were great. Thanks. Please sign in to leave a comment.