Sunlight in your roomYour room, in sunlight.Choose a time to explore.
Today
Drag to look around
—Drag to see the light change.
Sun at the window
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On the floor now
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The sun now
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The window
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Through your own window, any day of the year.
Sol for iPhone is coming soon. Hold the phone to the glass and its orbit shows where the sun will be, any hour of any day you scrub to.
Make it your space.
A rectangular room with a vertical window, in metres. The sill stands at 0.75 m and the ceiling at 3 m, and whatever stands across the street is one even angle above the horizon.
Name this room. Then hold two of them up to the winter.
Save the room above under a name, then model the next one. Each room’s hours of sun stand side by side, today and at both solstices, with when the light first and last reaches the floor and how far in it comes. Send it, and the other person sees the same rooms.
Calculated direct sunlight, and only that: the sun’s own position through a rectangular room with a level floor, a vertical window and one even angle for whatever stands across the street. Each room keeps its own city’s time. It does not know your actual neighbours, trees or glass, it is not a measure of brightness or warmth, and it cannot tell you whether a plant will do well there. Methods & sources
How it knows.
The beam
The window’s opening, tilted at the sun’s altitude and turned to its bearing, cut by the walls and laid on the floor. Whatever stands across the street hides the sun below its angle.
The day
The sun’s position comes from the date, the hour and the city, worked out in your browser. The hours of sun at the window are counted every two minutes, in the city’s own time.
What it leaves out
Clear sky is assumed, and the floor is level. The materials are only illustrative: this is where the light falls, not how bright or how warm it is.
Through your actual window.
Sol for iPhone is coming soon. Hold the phone to the glass and its orbit shows where the sun will be, any hour of any day you scrub to. Leave your address for early access and one email when it ships.
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