Why does a solar eclipse occur on the first day of the first month and not on the fifteenth 50

<> look at this picture. The Sun is on the right side of the diagram, and when the Moon orbits between the Earth and the Sun, that is, the position of the crescent in the diagram, the shadow of the Moon is likely to fall on the Earth, and a solar eclipse is possible. And this day must be the first day of the lunar calendar.

On the fifteenth day of the lunar calendar, the moon moves to the outer side of the line between the sun and the earth, which is the position of the full moon in the picture, and the shadow of the earth is near the moon. At this time, only a lunar eclipse is possible, not a solar eclipse.

A solar eclipse is when the moon circles the earth and turns between the sun and the earth, if the sun, the moon, and the earth are exactly lined up or close to a straight line, the moon blocks the sunlight that shoots to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs.

When the sun, earth, and moon are aligned in or close to a straight line at the beginning of the day, and the moon is in the middle of the sun and the earth, a solar eclipse may occur.

When the sun, earth, and moon are also exactly aligned in or close to a straight line at 15 o'clock, but the earth is in the middle of the sun and moon at this time, which means that a lunar eclipse may occur when the moon moves to the shadow part of the earth.

A solar eclipse is when the moon runs to the middle of the earth and the sun and blocks the sun, and the earth is in the middle of the sun and the moon at the fifteenth hour, how does the moon block the sun?

So-called"food"It refers to the astronomical spectacle in which a celestial body is completely or partially obscured by another celestial body or its dark shadow.

Children, have you ever observed a solar eclipse? There is a certain law in the occurrence of solar eclipses, which cannot be seen every day, and must be completed under certain astronomical conditions, so let's take a look at it together.

A solar eclipse will only occur when the Moon is halfway between the Sun and the Earth and aligns in the same straight line. This condition is only met when the Moon meets the Sun, that is, at the New Moon (the first day of the New Moon), when the Sun is located at one of the two points of intersection of the Moon's orbit and the ecliptic (the plane of the Earth's orbit around the Sun), that is, at one of the two points at which the Moon cuts the ecliptic. This is why a solar eclipse only occurs at the beginning of the moon's new cycle.

So-called"food"It refers to the astronomical spectacle of a celestial body being completely picked up by another celestial body or its dark shadow and obscured by a spring trace. There are three main types of solar eclipses: total solar eclipses, partial solar eclipses, and annular solar eclipses. The principle of the occurrence of a solar eclipse is earthly'Caused by a local area being obscured by the shadow of the moon.

The eclipse must occur on the New Year's Day, the first day of the lunar calendar. This is because only on that day will the Moon appear on the line between the Sun and the Earth, so that it is possible for the Moon to block the Sun and form a solar eclipse.

Why isn't there a solar eclipse on the first day of every month, and why isn't there a lunar eclipse on the fifteenth day of every month? This is because apart from the above conditions, there are several other factors that influence the occurrence of solar and lunar eclipses. We call the Earth's orbit around the Sun the ecliptic, and the Moon's orbit around the Earth the white path.

The plane of the ecliptic and the plane of the white path are not the same, and they have an average angle of 5°09 between them, and they are well arranged and change from time to time. A solar eclipse occurs only when the Moon orbits near the ascending and descending nodes of the ecliptic and white paths.

A lunar eclipse occurs on the 15th or 16th day of the lunar calendar, because the Moon is on the far side of the Earth, and a total or half lunar eclipse occurs when it enters the Earth's umbra or penumbra.

A solar eclipse occurs on the first day of the lunar calendar, when the moon is between the earth and the sun, and the earth enters the moon's umbra or penumbra, and an auspicious solar eclipse or partial solar eclipse and annular eclipse occurs.

A lunar eclipse is a special astronomical phenomenon in which when the Moon moves to the shadow part of the Earth, the area between the Moon and the Earth will be obscured by the Earth's rays, and a piece of the Moon will be missing.

The Sun, Earth, and Moon at this time happen to be (or almost) in the same straight line. Lunar eclipses can be divided into three types: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses. Lunar eclipses can only occur around the 15th day of the lunar calendar.

There are three types of lunar eclipses: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses. A partial lunar eclipse occurs when the Moon enters only part of the Earth's umbra.

And the diameter of the Earth's umbra is still twice that of the Moon. Therefore, when the center of the Earth and the Moon are roughly in the same straight line, the Moon will completely enter the Earth's umbra, resulting in a total lunar eclipse.

Because the lunar calendar is calculated according to the law of the moon's movement, the moon is just between the earth and the sun during the solar eclipse, and the position of the moon at this time is the first day of the lunar calendar, that is, when the moon is completely invisible, because the moon can be seen because of the reflection of the sun's light.

A solar eclipse, also known as a solar eclipse, is the movement of the moon to the middle of the sun and the earth, if the three are exactly in a straight line, the moon finger beam containing the ball will block the sun's light to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs.

Solar eclipses are divided into partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses. You can't look directly at the sun when observing a solar eclipse, otherwise it will cause temporary blindness, and in severe cases, permanent blindness.

In 2016, there were two solar eclipses in Tianyu. The timing of the two eclipses is a total solar eclipse on March 9 and an annular solar eclipse on September 1. In the sunlight, the moon and the earth drag a shadow in the direction of their backs to the sun. The moon swept across the ground, creating a solar eclipse of laughter.

When the Moon orbits between the Sun and the Earth, and the Moon obscures the Sun, it is a solar eclipse. When the Moon moves behind the Earth and enters the Earth's shadow, it is a lunar eclipse. It can be seen that a solar eclipse must occur on the first day of the lunar calendar, and a lunar eclipse must occur on the fifteenth or sixteenth day of the lunar calendar. Not every month there is a solar eclipse on the first day of the month.

Ten. There are lunar eclipses on the fifth and sixteenth. This is related to the orbit of the Moon. The orbital plane of the Moon orbiting the Earth is called the white plane, which is not in the same plane as the ecliptic plane of the Earth orbiting the Sun, and the two have an angle of 5°09.

If the sun and moon are conjunct and opposition, and exactly on the yellow and white intersection line, a solar and lunar eclipse will occur. Frequency of solar eclipses: The phenomenon of total solar eclipses is spectacular and rarely seen.

When the last rays of the sun's rays are blocked by the moon, the normally invisible atmosphere of the sun is immediately and visibly exposed to us: the red flame thrown up by Dou Jian from the sun's surface is the sun, and the silver light that extends from the sun in all directions is the corona. A total solar eclipse occurs when three celestial bodies, the Sun, the Moon, and the Earth, are either just right or very close to each other in a straight line.

There are not many opportunities for this kind of observation, as far as a certain observation point is concerned, it can only be seen once in three or four hundred years on average, and the longest time when the sun is completely obscured will definitely not exceed 7 minutes and 41 seconds. Solar eclipses occur periodically. Every other day, the Sun, Moon and Earth return to almost exactly the same relative positions as before.

This period is equivalent to 18 years (18 years if there are 5 leap years in the period).Thus, 18 years after a solar or lunar eclipse, another solar or lunar eclipse occurs. This cycle of eclipses is known as the "Sharo cycle" and was discovered by the ancient Babylonians.

"Sharo" means repetition and restoration in the Babylonian language.