Measure better. Compare consistently.
Practical sunlight and shadow guides.
These guides explain the inputs behind the simulator, the difference between direct sun and general brightness, and the checks that make a comparison more defensible.
Start with the basicsBuild a repeatable planning method
Read only the guide relevant to your decision, or use the full set as a field checklist before opening a focused calculator.
Sunlight Basics: Altitude, Azimuth and Shadows
A clear introduction to solar altitude, azimuth, sunrise, sunset and the geometry behind a level-ground shadow.
Read guide Planning guideHow Sun Direction Changes by Season
Understand why sunrise, sunset, solar altitude, and facade exposure change during the year, and how to compare dates without relying on compass myths.
Read guide Planning guideHow to Measure an Obstacle for a Shadow Estimate
Collect practical height, width, position, and orientation inputs for a building, wall, or tree before using a shadow calculator.
Read guide Planning guideHow to Compare Sunlight Between Apartments
Use a repeatable checklist for facade direction, floor height, nearby buildings, window geometry, and seasonal dates when comparing homes.
Read guide Planning guideHow to Estimate Sun Hours for a Garden Bed
Select useful dates, place the receiving point correctly, model seasonal obstructions, and interpret direct-sun hours for a garden.
Read guide Planning guideHow to Plan Golden-Hour Direction for a Photo
Use solar altitude, azimuth, subject position, and local blockers to plan front, side, or back light near sunrise and sunset.
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