Synodic month knowledge, what does synodic mean

The moon is at its fullest and brightest when it is "looking". What is "Hope"? On the first day of the lunar calendar, the moon moves between the earth and the sun, and the illuminated hemisphere of the moon carries the earth on its back, and we cannot see the moon, which is called "new moon", also called "new moon"; It's time for the lunar calendar.

Ten. On the fifth and sixteenth, the bright side of the moon is all facing the earth, and we see the round moon, which is called the "full moon", also called "hope". According to the lunar calendar, this day is the first day of the month. But on the same new day, the new moon may occur in the early morning or at night, and each synodic month itself has its own length and shortness.

In this way, the "hope" of the moon's fullest hour can occur as early as the early morning of the 15th and as late as the morning of the 17th.

As we all know, the lunar calendar is based on the law of the moon's orbit around the earth, so it corresponds to the moon very accurately. But the lunar calendar is a combination of the advantages of the lunar calendar and the solar calendar, which will inevitably have errors, when people put the beginning of the lunar calendar must be "Shuo", "Wang" depends on the movement of the moon, usually, it will appear in the lunar calendar.

Ten. Five, sixteen and two days.

The root cause of the late arrival of the Full Moon is caused by the unconstant speed at which the Moon revolves around the Earth. Disturbed by hundreds of factors, the speed of the Moon's orbit around the Earth is sometimes fast and sometimes slow, from "Shuo" to "Shuo" or from "Wang" to "Wang", the average cycle is days, but the difference between the longest and shortest periods is 13 hours. If the "footsteps" of the moon are slow before "looking", it may take 16-17 days to travel from "Shuo" to "Wang", so there will be "15 moons and 16 rounds, or even 17 circles".

"Hope" appears in the lunar calendar.

Ten. Five, ten.

In recent years, there has been the situation that the seventeenth month of the lunar calendar is the roundest, but no one pays attention to it because it did not catch up with the eighth lunar month where the Mid-Autumn Festival is located.

--- because the Mid-Autumn Festival is not all in the middle of the month!

Up up West West, down down East East.

Synodic refers to the new day and the sun.

New Year's Eve refers to the moment when the Moon is the same as the Sun's geocentric ecliptic longitude. New Year's Eve refers to the moment when the Moon is the same as the Sun's geocentric ecliptic longitude.

New Year's Eve refers to the moment when the Moon is the same as the Sun's geocentric ecliptic longitude. At this time, the Moon is between the Sun and the Earth, and the New Year refers to the moment when the Moon and the Sun's geocentric ecliptic longitude are the same. At this time, the Earth is between the Sun and the Moon.

Hope refers to the moment when the Earth's central ecliptic longitude is 180° different from the Sun. At this time, the Earth is between the Sun and the Moon. The side of the moon facing the earth is full of sunlight, so the moon appears bright and round from the earth, and it is called a full moon or moon.

The time interval from the new moon to the next new moon or from the next moon to the next moon is called a new moon, which is about a day.

This is only an average, because the orbit of the Moon around the Earth and the Earth around the Sun is uneven, and there is no simple relationship between the two.

The above information refers to the encyclopedia - synodic hope.

On the first day of the lunar month, the moon is between the earth and the sun, and the side facing the earth is dark, and the moon phase at this time is called the new moon, and the first day of the first month is called the new moon. On the fifteenth day of the lunar calendar, the moon arrives on the same side of the earth and the sun, and the one facing the earth is bright, and the moon phase at this time is called the full moon, fifteen looks.

The defect of the third floor is because the moon is facing the same side of the earth, because the cycle of the moon's rotation and revolution is the same, so there is no so-called saying that the darkness facing the earth turns into the light facing the earth.

Shuo: Refers to the moment when the moon's geocentric ecliptic longitude is the same as the sun's. At this time, the Moon is between the Sun and the Earth, which is the first day of the lunar month.

Look: Refers to the moment when the ecliptic longitude of the center of the Moon and the Sun differs by 180°. At this time, the earth is between the sun and the moon, usually on the 15th or 16th day of the lunar month.

It refers to the earth, the moon constantly alternates positions, the sun and the moon rotate, and the years never stop.

The first day of the lunar month is the New Year's Day, and the moon on the New Day is called the New Moon, which is also known as the New Moon, which is usually invisible. The fifteenth day of the lunar month is the day of the month, and the moon on the day of the day is called the moon, and the moon is also called the full moon, and the moon shadow is round. People call the cycle of change such as the monthly New Moon and the Moon Moon as the synodic month.

When the moon orbits between the sun and the earth, and the dark hemisphere of the moon faces the earth, it is called Shuo, which is the first day of the lunar month.

Phenomenon. When the moon circles behind the earth, and the hemisphere illuminated by the sun faces the earth, it is called at this time, usually on the fifteenth or sixteenth day of the lunar month.

Around the eighth day of the lunar month, at this time the moon is bright on one side and dark on the other side - dark in the east and bright in the west, as long as the moon is shown as dark on the left and bright on the right, it seems that the string is on the top, so it is called the upper wind.

Around the 23rd day of the lunar month, the moon is dark on one side and bright on the other side - the west is dark and the east is bright, as long as the moon is shown as the right dark and the left is bright, it seems that the string is at the bottom, so it is called the lower string.

Hope refers to the fifteenth day of the lunar month, and hope refers to the small month.

On the 16th day of the lunar calendar, the 17th day of the lunar calendar, Shuo refers to the first day of the lunar month, and obscurity refers to the last day of the lunar month.

In ancient texts, there are also specific names for certain special days of the month. For example, the first day of each month is called "Shuo", the second day is "both Shuo", "Death" or "Side Death", and the third day is "Zai Shengming" or "Shu";

The eighth day is "constant" or "winding", the fourteenth day is "i.e., the hope", the fifteenth day is "hope", the sixteenth day is "both hope" or "life", "zai shenglu", and the seventeenth day is "both life", twenty.

Second, the twenty-third day is "the last string", and the last day is "obscure" or "i.e. Shuo".

When the moon orbits between the sun and the earth, and the dark side of the moon faces the earth, it is called the new moon, which is the first day of the lunar month. When the moon circles behind the earth, and the hemisphere illuminated by the sun faces the earth, it is called at this time, usually on the fifteenth or sixteenth day of the lunar month. The first calendar to contain such a correction algorithm was the "Dry Elephant Calendar" created by Liu Hong.

The New Moon is the moon that runs between the Sun and the Earth, and the Sun appears at the same time, and the Earth cannot see the moonlight, this kind of moon phase is called the New Moon, New Moon or New Moon. In addition, the new moon also refers to the moon at the beginning of the month in the shape of a hook.

Wang: The fifteenth day of the lunar month (sometimes the sixteenth or seventeenth).

The Earth orbits between the Moon and the Sun. On this day, when the sun sets in the west, the moon rises from the east, and the round moon is seen on the earth. The moon that looks at the sun is called the moon and is also called the full moon. The second day of the day of the day is called hope.

The above is the literal meaning of synodic hope.

In Buddhism, synodic prayer refers to the first and fifteenth days of the lunar month, and also refers to the need for fasting on these two days during the synodic pilgrimage.

New Moon means the New Day of the month. Yuewang means to look at the moon, and the full moon refers to the fifteenth day of the month in the old calendar. The new moon is a new moon, and on the first day of the lunar month, the moon is just between the earth and the sun, and the place where the sun can be illuminated is exactly on the back side of the moon, and it rises and falls with the sun, so the earth people cannot see it.

月朔, pronounced yuèshuò, is a Chinese word.

New Moon Source: Tang Dynasty Wang Changling "Song Xing": Ming Hall sits on the Son of Heaven, and the princes of the New Moon Dynasty.

月望, pinyin yuèwàng, is a Chinese word.

Yuewang source: "Poetry, Xiaoya, the Turn of October": "At the turn of October, the new moon is hard, the sun is eclipsed, and the ugliness of Kong."

Zheng Xuanjian: "October of Zhou, August of summer." On the first day of August, the sun and the moon meet.

The Book of Rites: Yuzao": "The moon is less prison, and there are five and four squares." "The Qing Dynasty quoted the "Jingyi Shuwen Tongshuo" "Shuo Ri is not an auspicious day":

The beginning of January is called the New Year, or New Moon. ”