Every day, the position of sunset and dawn changes due to the inclination of the Earth's rotating axis. The angle between two solstices is the largest angular distance between two sunsets. This angle varies according on the location's latitude. At the equator, it is 90 degrees (noon and midnight), while at the poles, it is 0 degrees (direct sunlight all year round).
At the time of writing this article, the position of sunset on July 31, 2020 (EDT) was 17.1 degrees north of the east coast of the United States. So during a full moon, when there is no twilight, the night will be completely dark.
The new sunset position will cause any plants or animals that rely on light from sunset to grow during the spring and summer months to move their beds or shelters. For example, plants that use sunlight as their primary source of energy will need to adjust their growing habits if you want them to bloom under these new conditions. Animals that rely on dusk and dawn for activity levels such as birds, bats, and some types of insects will have to adapt their behavior to take advantage of the new sunrise situation.
As mentioned, the sunset position changes every day because of the tilt of the Earth's axis.
Because of atmospheric circumstances, the actual dawn and sunset times may differ somewhat from the estimated times. The duration of the day changes as the Earth revolves around the Sun. All of this is due to the Earth's axis's 23.5-degree tilt as it revolves around the sun. So the length of a day on Mars is about 39 minutes longer than what we experience here on Earth.
The solar day is when one complete rotation of the planet occurs, but the time between two successive solar midnight crossings is called the solar night. On Mars, these are equal in length, about 686 million miles (1090 million kilometers). Due to its distance from the Earth, sunlight takes about 8 minutes to reach Mars today, which means that the lowest point on the planet is always located at either the same latitude or longitude, depending on where you are on Mars.
During a Martian year, which is about 687 days, the amount of daylight changes because of the planet's orbit. If we were living on Mars right now, during springtime, the Sun would be rising later and setting earlier every day. By the fall, when the Sun is lower in the sky for more hours each day, we would need to rise with the Sun to go outside and not risk being blinded by its rays.
The Earth's orbit around the Sun is elliptical rather than circular, and the axis of rotation of the Earth is not perpendicular to the plane of the orbit. The non-circularity of the orbit, as well as the tilt of the Earth's axis of rotation, both contribute to the irregular shifts in dawn and sunset periods. The average distance between the Earth and the Sun is about 150 million km (93 million miles).
The Earth orbits the Sun at a speed of 6700 km/day (4300 miles/day), so it takes the Earth approximately 25 days to complete one orbit around the Sun. During this time, the position of the Earth with respect to the Sun changes due to gravitational forces from both planets.
As the Earth orbits the Sun, the angle between the normal to the Earth's surface and the Sun increases during spring and decreases during fall. This is called the solar day. Because the Earth rotates on its axis while orbiting the Sun, night and day are not constant. There is no such thing as an absolute sun-time or earth-time. Instead, there are only solar days and human days. Human days are just over 24 hours long and they increase as the Earth orbits the Sun.
During a year, the Earth travels around the Sun approximately 12 times from winter to winter and 12 times from summer to summer. These are known as the annual cycles.
The positions of the different sites on Earth fluctuate in reference to the Sun as the Earth revolves on its axis. A city on Earth that faces the sun at midday will rotate 12 hours later to face away from the sun. Sunrise, sunset, day, and night are caused by the locations of the Earth and the Sun throughout the course of a 24-hour revolution.
Sunrise and sunset happen because of the rotation of the earth. If we were able to see past the horizon there would be no reason why sunrise should occur only over the east or west. It could just as easily occur over the north or south. This is because all points on earth are given a day length based on their distance from the equator, so even though you might live near the North Pole it may not experience all hours of sunlight like someone living closer to the Equator.
At the same time, not all places on earth have sunrise and sunset. For example, if you were fly high in the sky above the tropics you wouldn't see any change in the length of the day. Because the angle between the earth and the sun isn't changing, they remain in darkness until sunrise comes around again.
Furthermore, not all parts of the tropics have this effect because some areas within the tropics are located in regions that experience daytime heat islands - areas that appear bright during the day but get very cold at night due to their location far from any major landmass.