Sunset is a natural phenomenon occurring when the Sun disappears below the horizon of the Earth due to its rotation. This event takes place approximately once every 24 hours globally, with the exception of areas located close to the poles.
The specific direction of the sunset varies by season and hemisphere. During both the spring and autumn equinoxes, the Sun sets due west. In the Northern Hemisphere, the Sun sets toward the northwest during the spring and summer, while it moves toward the southwest in the autumn and winter; these seasonal patterns are reversed in the Southern Hemisphere.