Depends on where you are (latitude) and the time of year.
what determines the portion of the moon that you see at night
An equinox occurs when the length of the day is equal to the length of the night. Here on Earth, it occurs around March 21 (the Vernal Equinox) and September 21 (the Autumnal Equinox).
Mars. Its day-night cycle is only about 40 minutes longer than Earth's.
There would be no seasons, and the length of day & night would be exactly 12 hours each.
The sun and moon.
The length of night and day depends on how fast a body like Earth is spinning. Of curse, the body's tilt with respect to its star - Sun in Earth's case - continually alters the lengths of days and nights according to the 4 seasons.
the tilt of the earth and what hemisphere you just so happen to be on
the time it takes the earth to spin around on its axis
The rotation of the earth causes night and day.
yes
The average length of a day on Earth is about 24 hours (23 hours, 56 minutes, and 4 seconds to be precise), while the length of night is the same. This is due to the rotation of the Earth on its axis, which creates a day-night cycle.
Day and night are of equal length throughout the year at the equator.
That would be the equator.
march 21st and September 21st
Probably whenever there is a solar eclipse.
Usually the length. Sometimes, though the orientation determines which measurement is the length. Usually the length. Sometimes, though the orientation determines which measurement is the length. Usually the length. Sometimes, though the orientation determines which measurement is the length. Usually the length. Sometimes, though the orientation determines which measurement is the length.
There would be no seasons, and no change in the length of day and night, anywhere on Earth.