Altitude angle is the angle between the horizon and the sun at any point in time.
The altitude angle gradually decreases between the summer solstice and the
winter solstice. After the winter solstice, the altitude angle grows gradually until
the summer solstice occurs. Thus, day length varies with changes in the altitude
angle. It gets shorter from the summer solstice until the winter solstice. It increases
until the summer solstice occurs again.
Angle Definition
When calculating the output of solar energy systems and irradiance values, it is
critical to determine the sun’s path. When discussing solar energy systems, due ...
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