Tool · Light & solar orientation
One room. Many ways to light it.
Explore natural light, from the first shadow to late afternoon.
Light & solar orientation · LisbonWinter · 12:00
Preparing the light…Demonstrative room · real-time 3D
See how far the sun reaches.
Keep the orientation and change the time. Sun direction and altitude move the shadows.
Illustrative demonstration. Solar position calculated for Lisbon (38.72° N; 9.14° W) on the stated 2026 dates, in mainland Portugal local time. Clear sky and unobstructed horizon. Ambient light and materials are visual approximations; illuminance, temperatures and energy use are not calculated. The room is 6 × 6 m with a 3 m ceiling height.
What you can explore
Choose the façade orientation (north, east, south or west), the season, the time of day, and an external shading overhang. The sun position is calculated for Lisbon and the demonstration room shows how direct light enters and how shadows move.
What this tool is not
It is a demonstration model, not a real project or a certified analysis of daylight, thermal comfort or energy performance. When designing a house, orientation, openings and shading are studied for the actual site.