Sun Angle Calculator
Calculate sun's elevation angle based on latitude and day of year
About this calculator
The Sun Angle Calculator determines the sun's elevation angle above the horizon based on your geographical latitude and the day of the year. This tool is essential for solar panel installers, architects, photographers, and gardeners who need to understand solar positioning for optimal energy collection, building design, lighting conditions, or plant placement. By calculating the sun's angle, you can maximize solar efficiency, plan shadow patterns, and optimize natural lighting throughout different seasons.
How to use
Enter your latitude in decimal degrees (positive for North, negative for South) and select the day of the year or specific date. The calculator will compute the sun's maximum elevation angle for that location and date, showing how high the sun appears at solar noon.
Frequently asked questions
What is sun elevation angle?
Sun elevation angle is the vertical angle between the horizon and the sun's position in the sky, measured in degrees from 0° (horizon) to 90° (directly overhead).
Why does sun angle change throughout the year?
Earth's tilted axis causes seasonal variations in sun angle. During summer, the sun appears higher in the sky, while winter brings lower sun angles.
How is this useful for solar panels?
Knowing sun angles helps optimize solar panel tilt and orientation for maximum energy collection throughout the year, improving overall system efficiency and performance.