An observer on Earth doesnīt see himself moving around the Sun but the Sun around the Earth.
Its trajectory across the sky is called "the sunīs apparent path".
The
seasons correspond to a parallel translation
of this trajectory.
Per season the variation in
solar altitude at noon is 23,5°.
Within certain latitude invervals, these trajectories can be grouped to
climate zones.
The sunīs position at a certain latitude and a certain time can be visualized in a
polar diagram.
