光迹探楼 - Building Sunlight

Explore building sunlight with an interactive native 3D model. Guang Ji Tan Lou helps home buyers and residents understand differences in sunlight between buildings, sections and floors. PROPERTY, BUILDING AND FLOOR Version 1.2.0 includes fourteen properties and 180 selectable buildings across several districts of Beijing, China. Search property names, aliases, cities or districts, and select a building, section and available floor. SEE LIGHT CHANGE THROUGH THE DAY Rotate, zoom or tap the building model. Scrub the time slider directly below it or play the day to see sunlight direction, illustrative shadows and the current direct-sunlight state. COMPARE TWO SOLSTICES View approximate direct-sunlight durations, intervals and blocking buildings. The fixed reference dates are December 21, 2025 and June 21, 2026. All displayed times use Beijing time (UTC+8), regardless of download region.…