Why the sunrise can be seen in the west at high latitudes

The earth rotates from west to east, and the sun moves from east to west in the sky. If a fast-flying airplane flies from east to west and exceeds the speed of the earth's rotation, the airplane will run faster than the sun in the sky, and the sun can be seen from the airplane, falling from the east and coming out from the west. This phenomenon can be seen at both high and low latitudes.

Because the earth is spherical, the higher the latitude, the shorter the length of the latitude, the equator is more than 40,000 kilometers, to the pole is just a point, so in high latitudes, it is much shorter to circle the earth along the latitude than in low latitudes, and the speed of the plane does not need to reach very fast to see the sunrise in the west. And at lower latitudes, airplanes have to fly very fast to see this phenomenon.

You don't understand this question very clearly.

I myself think so:

If you're flying from the U.S. to China, you're going through the high Arctic latitudes, and before you have crossed the Arctic, you're facing north, your back is south, your left is west, and your right is east.

But the moment you pass the North Pole, the direction is completely reversed, and you may not realize it at that time, thinking that your right hand side is still east, but in fact it is already west, so there is a situation where the sun is coming out of the west.

It is impossible for the sun to come out of the west.

Also, when there is a polar day at the pole, there will be no time when the sun rises in the west, because the beginning of the day is at 0 o'clock, and the sunrise in areas without polar day must be after 0 o'clock local time, and in the Arctic region, because of the polar day, the sun can be seen all day, so you can only see the position of the sun at 0 o'clock, and the sun must be in the north direction at 0 o'clock (if you are at the north pole, then the sun will come out from the south, because the north pole is south in all directions, and there is no east-west direction).

That's an illusion, because at high latitudes, there is a polar day, so sometimes you can see the sunrise in the west.

The plane flies from west to east with an angular velocity greater than the angular velocity of the Earth's rotation.

The North Pole, then the sun comes out of the south, because the North Pole is south in all directions, and there is no east-west direction).

--- phenomenal reaction of polar day in the polar circle.

<> one is the thin air and sunlight.

It is easy to penetrate the clouds and you can see it as soon as you come out.

The second is that the sun's rays are parallel from the ground.

The lower parallel shoots out, so the same longitude but high altitude is the first to shine, just like if you come from a distance, the first thing you see is a tall building.

Sunrise and sunset times are compared in the morning and evening about the sunrise time.

The comparison between morning and evening can be divided into four categories:

1. In the same place, the higher the altitude, the first place to see the sunrise; The later the sunset. So watch the sunrise early and sunset late on the plane.

2. In two places at the same latitude, the more east the location, the first to see the sunrise; The same latitude and hail are equal in terms of day length, and the more east the longitude, the earlier the sunset will be transported out, and the sunset will be earlier.

3. In two places at the same longitude, the longer the day, the first place to see the sunrise; The longer the day, the earlier the sunrise and the later the sunset.

4. In places where the latitude and longitude are different, if the difference in longitude between the two places is small, the longer the day, the first to see the sunrise.

One is that the air is thin, and the sunlight easily penetrates the clouds, so you can see it as soon as you come out.

The second is that the sun's rays are emitted parallel to the ground parallel line, so the same longitude but high altitude is the first to shine, just like when you walk from a distance, the first thing you see is a tall building.

Sunrise and Sunset Time Morning and Evening Comparison Regarding the sunrise time morning and evening comparisons can be divided into four categories:

1. In the same place, the higher the altitude, the first place to see the sunrise; The later the sunset. So watch the sunrise early and sunset late on the plane.

2. In the two places where Zen is traced at the same latitude, the more east the location, the first to see the sunrise; The length of the day is equal at the same latitude, and the easterly longitude, the earlier the sunrise and the earlier the sunset.

3. In two places at the same longitude, the longer the day, the first place to see the sunrise; The local time is the same, the longer the day, the earlier the sunrise and the later the sunset.

4. In places where the latitude and longitude are different, if the difference in longitude between the two places is small, the longer the day, the first to see the sunrise.