general/earth-phenomena
Surf Wiki
Dusk
Darkest stage of twilight
Belt of Venus
Atmospheric phenomenon
Sunset
Daily falling of the Sun below the horizon
Terminator (solar)
Line dividing day and night on a celestial body
Frazil ice
Collections of ice crystals in open water
Auroral chorus
Geomagnetic phenomenon
Twilight
Atmospheric illumination by the Sun below the horizon
Polar night
Phenomenon where the Sun remains below the horizon for more than 24 hours