For two days a year only does everywhere on the planet receive 12hrs sun 12 hrs dark. Around March 22 and September 22 are the two equinoxes [Sun is dead set above the Equator] Then and only then.
At the time of the equinoxes (when the Sun is directly overhead at the equator) the Sun is up for 12 hours. This answer does not tell the whole story. The sun is always directly overhead at the equator. There is always 12 hours of daylight at the equator no matter what season. To a purist the sun is actually above the horizon for about 12 and half hours but only because of the atmosphere bending light rays. If the Earth had no atmosphere it would be just plain 12 hours and 12 hours.
One day = 24 hours That's twice as long as 12 hours.
The equator experiences approximately 12 hours of daylight and 12 hours of darkness throughout the year due to its position on the Earth's axis. This means the equator has days and nights of equal length.
Along the equator every day of the year has 12.1 hours from sunrise to sunset and 11.9 hours from sunset to sunrise.
equator
Northpole
North Pole Dumitru
The lengths of days and nights in the desert are the same as with any area of the world at the same latitude. In the summer the nights are short while in the winter the nights are long. Over a year's period they average 12 hours of daylight and 12 hours of darkness per day.
The equator.
When you live near the equator, or at the equinoxes (March 20 or 21, September 22 or 23).
The sun is vertically overhead at the equator in the months March 21st to September 23rd.All places on Earth, (except at the poles) receive 12 hours of daylight (day) and 12 hours of darkness (night). Days and nights which are 12 hours long are called equinoxes.Note: Day and Night are always 12 hours long at the Equator.
The equinoxes are the days when the days and nights are equal. I.e. day=12 hours long, night=12 hours long. The vernal equinox is in spring and the autumnal equinox is obviously in autumn. They are sometimes said to be the start of summer and winter respectively.
For two days a year only does everywhere on the planet receive 12hrs sun 12 hrs dark. Around March 22 and September 22 are the two equinoxes [Sun is dead set above the Equator] Then and only then.
If the Earth's rotational axis were not tilted relative to the plane of the ecliptic, the days and nights would always be equal, and about 12 hours each.
Night is half the span of 24 hours, so you could say that nights are 12 hours long. If your question has to do with lack of a sunrise, there are locations on the continent that experience no sunrise for between one 24-hour period, up to six months. Specifically, that six-month location without a sunrise is the South Pole.
Normally it will take 12 hours but not always