I came across shademap.app a ~month ago, and had a "the internet can be so awesome" moment. I wrote to my property mates: "I found a cool free website for seeing shade at our site throughout the day and year. Maybe helpful for garden planning. Our address is loaded in [here]". Reply: "Wow! That is cool!". It seems to be very much in the solarpunk spirit (even more so with your engagement here). I hope to incorporate it into my solar installation work. Thank you :)