Approximately when does a solar eclipse occur? What about lunar eclipses?

Solar eclipse: The Moon moves between the Sun and the Earth on the first day of the lunar month, so the eclipse must occur on the New Year. But not every New Year's Day has a solar eclipse.

Because there is an angle of about 5° between the orbital plane of the Moon and the orbital plane of the Earth, although the Moon is between the Sun and the Earth on most New Lunar New Days, the three celestial bodies are not in a straight line.

Lunar Eclipse: During a lunar eclipse, the Earth is between the Sun and the Moon, so the lunar eclipse must occur at the location of the Moon (i.e., the Full Moon), which is the lunar calendar.

Ten. 5.16 days. However, since the Earth's orbital plane and the Moon's orbital plane are not in the same plane, the Moon does not enter the Earth's shadow every month, so it is impossible for a lunar eclipse to occur every moon.

Solar and lunar eclipses occur in a straight line between the sun, the earth, and the moon, and this happens twice a month, around the full moon (fifteenth) and around the new moon (the first day of the new month). Generally, solar eclipses occur around the new moon of the full moon, and the lunar eclipse occurs around the full moon of the moon, but it is not at this time that the solar and lunar eclipses occur, which are also related to many factors such as the yellow-red angle and the yellow-white angle, so the specific situation depends on the report of the observatory.

The eclipse must occur at the New Moon.

The lunar eclipse must have occurred on a full moon.

The Sun, the Earth, and the Moon run in a straight line.

The solar eclipse is around the first day of the lunar calendar.

The lunar eclipse is around the fifteenth day of the lunar calendar.

There will be slight discrepancies.

caused by the revolution of the Earth, the Moon, and the Sun.

If the earth is in the middle of the sun and the moon, there will be a lunar eclipse;

When the Moon is between the Earth and the Sun, there will be a solar eclipse.

A solar eclipse occurs on the first day of the lunar calendar, and a lunar eclipse occurs on the fifteenth day of the lunar calendar. Because only on these two days can the sun, the earth, and the moon be aligned in a straight line.

The sun, the earth, and the moon are projected in a straight line.

Solar eclipses that occur near the intersection of the Moon's orbital plane and the Earth's orbital plane always occur on the first day of the lunar calendar

A lunar eclipse must have occurred around the 15th of the lunar calendar.

It does not necessarily occur in which month, the solar eclipse occurs around the first day of the lunar month, and the lunar eclipse occurs around the fifteenth day of the lunar calendar, because only on these two days can the sun, the earth, and the moon be aligned.

The eclipse must have occurred on the first day of the lunar calendar. At this time, the Moon is located between the Earth and the Sun, but because the Earth's orbit (ecliptic) and the Moon's orbit (white path) are at an angle of 5°9, not every New Lunar Day has a solar eclipse.

A solar eclipse occurs at the time of the new moon, which is around the first day of the lunar calendar. On the contrary, a lunar eclipse occurs at the full moon around the fifteenth day of each month. At this time, the Moon moves into the shadow of the Earth.

Since the Earth's projection in the Moon's orbit is always larger than that of the Moon, an annular lunar eclipse will not occur. Total lunar eclipses occur once a month, and partial lunar eclipses occur less often, about once every 22 months.

Total solar eclipses are by no means uncommon, occurring somewhere in the world about once a year and a half. When a solar eclipse occurs, the Moon is orbiting between the Earth and the Sun, and the Moon's elliptical shadow is projected onto the Earth's surface.

A solar eclipse generally occurs on the first day of the lunar calendar, and a lunar eclipse generally occurs on the fifteenth day of the lunar calendar.

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 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. In folklore, this phenomenon is called the Tengu Eclipse Day. Solar eclipses only occur at the New Year, when the Moon and the Sun are conjunct.

The eclipse is divided into partial solar eclipse, total solar eclipse, annular solar eclipse, and total annular eclipse.

A lunar eclipse, also known as a lunar eclipse, is an astronomical phenomenon in which the part of the moon that could have been illuminated by the sun's rays when it moves into the shadow of the earth's state (the shadow is divided into two parts, umbra and penumbra), and some or all of it cannot be illuminated by direct sunlight, making it impossible for observers on the earth to see the ordinary moon phase. When a lunar eclipse occurs, the sun, the earth, and the moon happen to be or almost in the same straight line, so the lunar eclipse must occur on the night of the full moon.

Historical accounts of lunar eclipses

In 2283 BC, the record of a lunar eclipse in Mesopotamia was the world's earliest record of a lunar eclipse, followed by the Chinese record of a lunar eclipse in 1136 BC. The phenomenon of lunar eclipses has been driving the development of human understanding. Ancient Chinese and African folklore believed that a lunar eclipse was a "heavenly dog swallowing the moon", and that gongs and drums had to be beaten to drive away the tengu.

During the Han Dynasty, Zhang Heng had already discovered part of the principle of lunar eclipses, believing that the earth went in front of the moon and blocked the sun's light.

In the 4th century BCE, Aristotle inferred that the Earth's shadow was spherical as he saw from the eclipse of the moon. The ancient Greek astronomer Aristarchus = in the 3rd century BC and Ibaches = in the 2nd century BC both proposed the determination of the relative size of the Sun-Earth-Moon system by means of a lunar eclipse. Iba Valley also proposed to measure geographic longitude by observing lunar eclipses at the same time in two places far apart.

The above content refers to Encyclopedia - Lunar Eclipse.

The difference is that one occurs during the day and one at night.

1. Solar eclipse, also known as 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 will block the light of the sun to the earth, and the black shadow behind the moon just falls on the earth, and the solar eclipse phenomenon occurs; Solar eclipses can only occur around the first day of the Lunar New Year.

2. A lunar eclipse is a special astronomical phenomenon, which means that when the moon moves to the shadow part of the earth, the area between the moon and the earth will be blocked by the earth because the sunlight is blocked, 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.

3. Solar and lunar eclipses are typical examples of light propagating in a straight line in the same homogeneous medium. It is not every time a solar eclipse occurs when the moon moves between the sun and the earth, and two conditions need to be met for a solar eclipse to occur. First, solar eclipses always occur on New Year's Day (the first day of the lunar calendar).

Eclipses are not guaranteed on all New Moons, because the Moon's orbit (the white path) and the Earth's orbit (the ecliptic) are not in the same plane. The plane of the white and the plane of the ecliptic have an angle of 5°9. Second, both the Sun and the Moon move near the intersection of the white and ecliptic paths, and the Sun is at a certain angle from the intersection (eclipse limit).