Why the Northern Hemisphere is from the northeast when the sun first rises on the winter solstice

The exact position of the angle at which the sun rises and falls is:

In the area between the south of the Tropic of Cancer and the north of the Tropic of Capricorn, the sun rises southeast and sets southwest on the winter solstice, and rises northeast and sets northwest on the summer solstice, when the sun shines directly overhead.

Between the south of the Tropic of Cancer and the equator, the sun rises in the southeast and sets in the southwest during the winter in the Northern Hemisphere.

Between the north of the Tropic of Capricorn and the equator, the sun rises in the northeast and sets in the northwest during the summer in the Northern Hemisphere.

North of the Tropic of Capricorn, the sun rises in the southeast and sets in the southwest throughout the year, and the sun shines obliquely and does not hit the top of the head throughout the year.

South of the Tropic of Capricorn, the sun rises from the northeast to the northwest throughout the year, and the sun shines obliquely and does not hit the top of the head throughout the year.

In the north of the Arctic Circle, the sun rises in the southeast and sets in the southwest throughout the year, and the sun shines obliquely all year round when it does not hit the top of the head, and the northern hemisphere has polar day in summer and polar night in winter.

In the area south of the Antarctic Circle, the sun rises from the northeast to the northwest throughout the year, and the sun shoots obliquely throughout the year without hitting the top of the head, and there is a polar night in the winter of the Southern Hemisphere (this time is the summer of the Northern Hemisphere) and a polar day phenomenon in the summer (this time is the winter of the Northern Hemisphere).

Note: The winter solstice is the winter in the northern hemisphere and the summer in the southern hemisphere;

The summer solstice is in the summer in the Northern Hemisphere and the winter in the Southern Hemisphere.

Because you're not on the Tropic of Capricorn.

Northern Hemisphere. In summer, the sun does rise in the northeast.

The general rule is:

1. When the sun shines directly on the equator, the sun rises due east and sets due west all over the world.

2. When the sun shines directly on the point.

When located in the Northern Hemisphere (between March 22 and September 22), the sunrise in the northeast and sunset in the northwest will occur in all parts of the Northern and Southern Hemispheres.

3. When the direct point of the sun is located in the southern hemisphere.

(between September 24 and March 20 of the following year), the sunrise in the southeast direction and the sunset in the southwest direction are all over the northern and southern hemispheres.

1. Every year on the spring and autumn equinoxes (March 21 and September 23), the sun rises due east at 6 o'clock local time and sets due west at 6 p.m. local time. It can be further clarified that the direction of due east corresponds to the direction of 6 o'clock, and the direction of due west is the direction of 18 o'clock.

In addition, in the Northern Hemisphere, the noon Sun is mainly located due south, i.e., at 12 o'clock, and due north corresponds to 0 o'clock. Therefore, the correspondence between time and azimuth in the Northern Hemisphere is:

0:00 socks correspond to due north, 0:00 to 6:00 to northeast; 6 o'clock corresponds to due east; 6 a.m. to 12 p.m. corresponds to the southeast direction; 12 o'clock corresponds to the direction due south; 12 o'clock to 18 o'clock corresponds to the southwest direction; 18 o'clock corresponds to due west; The 18 o'clock to sunset corresponds to the north-west direction.

In the Southern Hemisphere, the Sun at noon is mainly located in the direction of due north, i.e. at 12 o'clock, and correspondingly, the direction of due south corresponds to the direction of 0 o'clock. Therefore, the correspondence between time and azimuth in the Southern Hemisphere is:

0 o'clock corresponds to the south direction, 0 o'clock to 6 o'clock corresponds to the southeast direction; 6 o'clock corresponds to due east; 6 a.m. to 12 p.m. corresponds to the north-east direction; 12 o'clock corresponds to the direction of due north; 12 o'clock to 18 o'clock corresponds to the northwest direction; 18 o'clock corresponds to due west; The 18 o'clock to sunset corresponds to the southwest direction.

From January 22 to September 22, the direct point of the sun is located in the Northern Hemisphere, which is the summer half of the year (including summer) and the days are long and the nights are short, that is: sunrise before 6 o'clock and sunset after 18 o'clock. According to the correspondence between the above time and direction, it can be known:

The sunrise is northeast and the sunset is northwest.

At the same time, the days are short and the nights are long in various parts of the southern hemisphere, i.e. sunrise after 6 o'clock and sunset before 6 p.m. According to the correspondence between the morning training room and the direction above, it can be seen that the sunrise direction is still northeast, and the sunset direction is northwest.

3. In the same way, the sunrise and sunset between September 24 and March 20 of the following year can be understood.

If the Sun is in the northern half of the sky, not only in the Northern Hemisphere, but anywhere in the world, the Sun will rise in the northeast and set in the northwest (the same is true in the Southern Hemisphere, and the three upstairs are not accurate in this point).

The reason may be difficult to explain only by verbalism, and if the landlord is interested, he can discuss it privately. Let's start with a rough idea.

The landlord first imagined that he had a globe, and the polar axis (the line connecting the north and south) was parallel to the ground. Then imagine that a great circle at the level of the earth is the dividing line between heaven and earth, because now the polar axis is horizontal, and now it simulates the rise and fall of celestial bodies in the equatorial region.

If you want to look at a point north of the equator (such as Beijing), when the landlord rotates the globe, this point must be in contact with the horizon north of the equator (that is, the big circle).

Raising the North Pole now simulates the Northern Hemisphere, where the points north of the equator will still rise in the northeast and set in the northwest; Celestial bodies south of the equator rise in the southeast and set in the southwest.

Then raise the South Pole (simulating the situation in the Southern Hemisphere), and the landlord will make a wise stop and see that the above conclusion is still true; Points north of the equator will still rise in the northeast and set in the northwest; Celestial bodies south of the equator rise in the southeast and set in the southwest. And this is where several upstairs misunderstood.

Practice brings true knowledge, and the landlord will try it himself.

Summer: The sun rises and sets from the northeast.

Winter: The sun rises and sets from the southeast.

Reason: When the sun's rays hit the southern hemisphere directly, the sunrise in the southeast and sunset in the southwest of the world, except for the polar day and night regions. When the sun's rays hit the Northern Hemisphere directly, the sun rises in the northeast and sets in the northwest except for the polar day and night regions.

When the sun's rays hit the equator directly, the whole world, except for the poles, rises in the east and sets due west.

Impact: On the summer solstice, the sun rises at about 25 degrees north-east and sets at about 25 degrees north-west latitude in our latitude.

On the winter solstice, the sun rises at about 25 degrees south-east and sets at about 25 degrees south-west latitude in China.

Because we are in the Northern Hemisphere, due to the inclination of the Earth's axis, during the time that the Earth revolves around the Sun, that is, in a year, from the vernal equinox, the movement of the Sun relative to the observer is the equator - gradually northward, reaching the northernmost point (Tropic of Capricorn) on the summer solstice, then gradually southward, returning to the equator at the autumnal equinox, then southward, reaching the southernmost point (Tropic of Capricorn) at the winter solstice, and then gradually moving northward, returning to the equator at the vernal equinox, completing the year's orbit.

Therefore, on the day of the vernal equinox, the sun rises due east and sets due west, and after the vernal equinox, according to the above statement, it gradually rises northward, that is, rises from the northeast and sets in the northwest, and the height of the sun becomes higher, and we usher in the summer. After the summer solstice, it gradually moves southward, and at the autumnal equinox it is due east and west, and then continues southward, rising from the southeast and setting from the southwest, becoming lower in height and gradually colder.

On the winter solstice (around December 22), the direct point of the sun is on the Tropic of Capricorn (23°26's), after which it moves northward.

On the day of the winter solstice, the sun reaches the southernmost point of the year, almost reaching the Tropic of Capricorn (23°26'S). On the day of the winter solstice, our northern hemisphere receives the least amount of sunlight, 50 less than the southern hemisphere, and the days reach their shortest, and the days get shorter the further north you go.

The winter solstice is also the day when the noon sun is lowest in the Northern Hemisphere. After the winter solstice, the night sky and stars are completely replaced by winter stars, and from the day of the winter solstice, it begins to "enter the nine". At this time, the Southern Hemisphere is in the middle of a hot summer.

The concept of the point of direct sunlight and the law of activity.

The direct solar point is the point where the angle of incidence of sunlight on the earth's surface (i.e., the angle of solar altitude) is 90 degrees, and it is the intersection of the geocentric and heliocentric lines and the earth's spherical surface. It is 12 noon at the meridian where the direct point of the sun is located.

The activity pattern of the direct sun point is as follows: the spring equinox (around March 21), the direct sun point is at 0° at the equator, and then moves north. On the summer solstice (around June 22), the direct point of the sun is over the Tropic of Cancer (23°26'N) and then moves south.

At the autumnal equinox (around September 23), the direct point of the sun is at 0° equator, and then continues to move south. On the winter solstice (around December 22), the direct point of the Tai Burn Envy Void Yang is on the Tropic of Cancer (23°26's), after which it moves northward.

The geographical significance of the point where the sun shines directly.

1.The movement of the direct point of the sun causes changes in the global heat distribution.

2.The seasonal shift of the direct point of the sun drives the north-south shift of the planetary system.

3.The seasonal shift of the direct point of the sun causes changes in the length of day and night and the height of the sun at noon.

The shortest day of the year in China is the winter solstice. On the day of the winter solstice, the sun directly reaches the southernmost point of the year, that is, the sun just shines directly on the Tropic of Capricorn, and the sunlight is the most inclined to the northern hemisphere, so the day of the winter solstice is also the shortest day and the longest night in the northern hemisphere. After the winter solstice, the direct point of the sun slowly shifts northward, and the days in the Northern Hemisphere slowly become longer and the nights gradually shorter.

The winter solstice originated in the Spring and Autumn Period, and is the earliest one formulated in the 24 solar terms, commonly known as the "Winter Festival", "Long Solstice Festival", "Ya Sui" and so on.

Extended Rubber Broad Stimulation Data:

After the winter solstice, the climate in various places has entered the coldest stage, that is, people often say "into the nine", so the folk have "cold in Sanjiu, hot in Sanfu" saying.

Ancient China attached great importance to the winter solstice, and the winter solstice was regarded as a large festival. People regard the winter solstice as the starting point of the solar terms, and after the winter solstice, the new year is about to come to Qiaocong, so in ancient times, the grandeur of the winter solstice festival is no less than the new year, there is a saying that "the winter solstice is as big as the year", that is, the etiquette of the winter solstice is almost the same as the annual festival.

Since the Han Dynasty, celebrations have to be held, and the court has a three-day holiday during the peak period, and the monarch does not listen to the government; The folk market is closed for three days, and the liveliness is no less than that of the New Year.