Hengefinder: Finding When the Sun Aligns with Your Street

A developer created Hengefinder, a tool that predicts when the sun aligns with streets in any city (similar to Manhattan's famous "Manhattanhenge" phenomenon). The project involves calculating the bearing of roads relative to true north and comparing it to the sun's azimuth at sunset, though the developer discovered practical challenges like accounting for Earth's curved surface, where longitude distances vary by latitude. The tool demonstrates how seemingly simple geographic calculations require adjustments when applied to real-world locations.