Average over a year: 93 million miles.
Makes no difference whether it's day, night, or afternoon.
There is no direct relationship between the rotation of a planet (which governs day length) and a planets distance from the sun. The nature of the planets spin is more to do with the formation of the system early on, by large impacts of the more numerous bodies that would have been around.
24 hours
The distance between the Earth and the Sun varies from day to day. The Earth is closest to the Sun on January 4, (plus or minus one day) and farthest away from the Sun on July 4. There is very little difference from year to year.
Time of rotation of a planet does not depend on distance from another planet.
The length of the day is not the reason but is a result of the season. The reason for seasons to take place is the inequality of distance between sun and earth with time. We all know that earth rotates around sun. But it won't rotate in a perfect circular path. The orbit of earth is an oval in shape. Hence, some times it will be closer to sun and some times farther. When it is closer, most of the area on earth is covered by sun. Hence, we have more day time (or length of the day) during summer. In a similar manner, as less area is covered by sun, the length of the day is less in winter.
A day is a time, where earth faces sun, night when the sun is on the other side of globe.
The earth does not rotate around the moon. The moon rotates around the earth. Neither one constitutes a day. A day is the time for the earth to revolve once in relation to the sun. It is the time from when the sun is directly over head until the time the sun is directly over head again.
The difference is so incredibly minute that it is hardly worth mentioning. However, the fact is that it depends on the time of day. The sun rises first in Mississippi, and at that time Mississippi is closer to the sun. The suns sets later in Colorado and around that time, Colorado is closer. They are at times equi-distant from the sun as well.
The Earth's distance from the sun does not have a direct impact on day or night. Day and night are primarily determined by the rotation of the Earth on its axis. The Earth's closest point to the sun, called perihelion, occurs in early January when the Northern Hemisphere experiences winter.
It occurs approximately January 4 every year, depending on where the moon is in its orbit around the earth (it pulls the earth towards it slightly so the minimum earth-sun distance can vary from January 2nd to 6th).
The Earth ALWAYS faces the Sun. However, the Earth rotates. So one half of the Earth is in sunlight (Day time) and the other half of the Earth is in darkness (night time). We always face the Sun, because we , the Earth, is held there in its orbit about the Sun , because of Sun/Earth gravity.
The length of a planet's year is determined by its orbital period around the Sun. This period is influenced by the planet's distance from the Sun and its orbital speed. The time it takes for a planet to complete one orbit around the Sun is considered its year.