The SunPlot3D program was designed to be an effective tool to determine the Sun's position using an interactive three-dimensional display. It is also a valuable learning and experimentation laboratory enabling a user to become familiar with solar energy geometry in general.
Feel free to click on the world map to set a location, adjust the date values liberally, and observe the solar and module positions on the chart. Then, rotate the chart as needed to get a good view of what’s happening with the relative positions of the Sun, Earth, and solar module. Then repeat the process. After some time with this type of experimentation, you will have a better understanding of Sun positions, solar module tracking, and influences on incident solar irradiation.
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