When does the sun hit your house?
Enter an address to see sunrise and sunset, how many hours each side of the home sits in direct sun, when glare hits, and when to lower the shades on every wall.
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How the sun is placed
Sun position comes from astronomy-engine, an open-source astronomy library accurate to about an arcminute, with atmospheric refraction near the horizon. Times are accurate to about a minute and are shown in the home's local time zone, daylight saving included.
How heat on each wall is estimated
Each wall's heat figure is clear-sky direct sunlight striking a vertical surface, in watts or kilowatt-hours per square meter. Clouds, trees, neighboring buildings, and roof overhangs aren't modeled, so use the numbers to compare the sides of the home, not as an energy bill forecast.
How addresses are matched
Street addresses are matched with Google. If an address can’t be found, the study falls back to the center of its ZIP code or city, which shifts sun times by less than a minute. The direction the house faces matters far more, so set it carefully.