Why Does the Sun Rise and Set at Different Times Each Day?

Today's Wonder of the Day is inspired by Audrey of Welling, West Virginia. Audrey's miracle, "Why does the sun nights every night" WONDERING and we, Audrey, thank you.

What time is the sunrise this morning? What time is this evening? The answer to these questions will depend on where you live and when it will be in that year.

Have you thought about sunrise and sunset? If the sun rises the same day every morning, is not that good? Is not it convenient to know when the sun is determined at the same time every night?

Unfortunately, the world does not. If you live in North America, you may expect those long summer days, you can play outside for a few hours, the sun never gonna be late at night I guess.

Again, you may be afraid of short winter. You awoke before the sun rises and have little time to play after school and do homework before it gets dark.

(1) The situation is different if the Earth is a true circle and goes around the orbit of the sun, and (2) the axis of the earth is perpendicular to its orbit plane (vertical line). In this case, the sun will rise at the same time every day. Every year the sky follows the same road.

However, these conditions do not apply to the Earth. The orbit of the earth around the sun is slightly elliptical, not complete circular orbit. This means that the sun moves across the sky at slightly different speed every day, depending on the location of the earth's orbit.

The axis of the earth is not perpendicular to its orbital plane. Instead, the Earth is tilted about 23.4 ° with respect to its axis. This is our earth season

As the Arctic leans towards the sun, the northern hemisphere experiences summer and the noon sun is high in the sky. In the winter, the Arctic Circle is inclined to leave the sun, the noon sun will not be higher than the sky's height.

The inclination of the earth explains why the longest day of the year will occur during the summer solstice (usually around June 21). Similarly, the shortest day of the year occurs during the winter solstice (usually around December 21)

The Earth 's elliptical orbit is combined with that axis' s slope, and the sun adopts a different path of the sky at different speeds every day. This gives us sunrise and sunset times that are different every day.

When the summer solstice is over, you will notice that the number of days in a day is shorter and shorter. This trend continues until the winter solstice, the shortest day of the year. After the winter solstice, that day will be a little longer. Until summer solstice, it is repeated every year.

As the clock rises the sun rises and it will be late every day. As the clock rises the sun rises and starts early every day. These times occur in summer and winter, and in early spring and autumn, if the two effects giving the time equation are completely due to the sunrise and sunset times. Most of us will say soon, of course this is not true. But it is true for people living on the equator! On the standard meridian of the equator, the sun may be expected to rise at 6 o'clock. It started at 6 pm, but the sun took off at 6:03 a.m. July in the summer moon, from 6:11 pm in February of the winter month. It rose to 6:07 in the morning. Mid May, and 6:20 am. By the end of October. In the equator, these effects are fully calculated by the time equation.

In the equator, the winter solstice did not set the length of the day just as the sun rose and fell. The day and night stay the same, but during the winter solstice the rise time and fall time differ by about 1 hour. As the sun occurs very quickly on the equator, it is very important to return home within time. Twilight did not last long. In the year of spring equinox, our family can balance the group of eggs at the end of spring equinox. They remained balanced even after a long day. Standing on our counter, waiting for someone to squat down on the floor. I tried to balance eggs on the head of a nail on the equator. I did it, I have a certificate (somewhere) to prove this.