Henge Days

About

A web app that shows when direct sunlight will hit the walls of a building. Users enter an address to get a map with calendar details and charts, can save buildings, walls and dates in a Planner with a Calendar feed, analyze sun along a street up to 5km, and share links. It uses OpenStreetMap data, the NOAA solar position algorithm computed in the browser, and Open-Meteo cloud forecasts.