Thanks for this link - I'm amazed to see it even has an approximation for my city based on buildings (Detroit.) This is really useful tool for photography. On

Thanks for this link - I'm amazed to see it even has an approximation for my city based on buildings (Detroit.) This is really useful tool for photography. On Android, I also use Sun Surveyor to determine when the sun is hitting the right side of a building, but it doesn't show the shadows cast by other buildings!