On Earth, daytime is roughly the period on any given point of the planet's surface during which it experiences natural illumination from indirect or (especially) direct sunlight.
Other planets that rotate in relation to a luminous primary, such as a local star, also experience daytime of a sort, but this article primarily discusses daytime on Earth.
Famous quotes containing the word daytime:
“This was your place of birth, this daytime palace,
This miracle of glass....”
—Philip Larkin (19221986)