I love watching the sunset at night, it is the daily disappearance of the Sun below the horizon as a result of Earth's rotation.
Sunsets are so beautiful! I love watching them, especially at the beach.
I find it very relaxing and therapeutic. Near to the horizon, atmospheric refraction causes the rays of light from the Sun to be distorted to such an extent that geometrically the Sun's disk is already about one diameter below the horizon when a sunset is observed.