Sun Position & Shadow Planner

Plan where the sun will be and estimate the shadow cast by a vertical object on a level surface. Choose a site by entering coordinates or using foreground device location, confirm its IANA timezone, then move through the day minute by minute. See true-north sun azimuth, apparent elevation, sunrise and sunset bearings, solar noon, and a calculated shadow length and direction. The core planner works locally and does not require an account. An optional online Google map can help place a site when configured; calculations remain available when the map is unavailable. Included in the free planner: • One persistent site and one shadow object • Today’s sun position, solar events, and sunrise/sunset direction rays • Minute-by-minute time scrubber • True-north sun and shadow diagram • Metric or imperial display • System, light, and dark appearance Premium lifetime unlock adds: • Unlimited saved sites and multiple objects • Any supported date from 1900 through 2100 • Two-date seasonal comparison • Saved scenarios and notes • App-owned PNG plus CSV and JSON calculation exports • Versioned JSON backup and safe import preview Your sites, labels, objects, scenarios, notes, and settings are stored locally in app-owned storage. Exports and shares happen only when you choose a destination through Android. Google Play handles purchases and restoration. Important model limits: results are calculated astronomical estimates. Object shadows assume a vertical object on a level plane. The app does not model terrain, slope, buildings, trees, nearby obstructions, weather, cloud visibility, or magnetic heading, and is not a surveying or solar-engineering tool. Verify important plans on site.