Night

A satellite image of the earth at night

Night or nighttime is the time when the Sun is not in the sky. Night happens between dusk & dawn. The opposite of night is daytime. The start and end times of night are different in different geographic locations. It varies on season, latitude, longitude and timezone.

In other time zones, the night occurs at different times. This is because the Sun shines on different parts of the Earth at different times. During a solar eclipse it is also partially night because the Sun is blocked out by the Moon.

In popular culture, night is often thought of as a symbol of evil, because of the fear of the dusk, lack of being able to see what's around and criminals like doing crimes at nightfall.

Night Media

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  The night sky above a French chapel with the Milky Way and stars visible, and light pollution on the horizon

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  Day and night during the winter solstice in the northern hemisphere

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  A diagram of the sun at sunrise or sunset, showing the effects of atmospheric refraction. The sun's angular radius is 16 arcminutes, and the average atmospheric refraction is 34 arcminutes. These combine to cause the sun to remain visible until it is 50 arcminutes below the horizon.

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  The drainage basin of the Nile river and delta at night

• The Moon's phase at hourly intervals throughout 2020, as viewed from the Northern Hemisphere

• The giant moray eel is most active by night. Its brain has adapted to rely less on visual input and more on its sense of smell.

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  Nocturnal insects drawn to an artificial light

• Time-expanded recording of a bat using echolocation to home in on its prey

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  Fuseli's The Nightmare

• Time-lapse video of a night-blooming cereus

• A night scene tinted blue from the 1925 film The Phantom of the Opera

• A night scene from the episode "Night Out with Mr. Bean" with a blue color balance and lighting

Related pages

• Light pollution
• Polar night