SunCalc org

Nice simple app, almost as good as the browser version. I wish it had a few missing features, such as the altitude arc the sun follows at the given location on the selected day and the colored band of altitudes possible during the year, as well as the sunrise/sunset direction rays. However, the time slider and the changing color of the sun indicator (yellow above horizon, gray below) do a fine job of showing the same daily information.

I love this damn app!! Trying to grow potted plants and was confused by my perception of sun's path and what to expect at certain points in growing season. We have some obstructions with trees blocking light. This app really helped me understand what is going on at my location relative to compass grid and sun's path across the sky. I love it. Well done!!

Absolutely brilliant. Thanks guys! I had a very complex problem of overshadowing and space constraint on my roof and this made it possible to calculate the maximum power for my installation. It gives the sun azimuth, altitude and length of shadow anywhere in the world on any day at any time. And even shows the map and sun position graphically. Just brilliant. Thanks again. I could not have done it without you.