Why is the moon full during the Mid Autumn Festival?

1. From a meteorological point of view.

At this time, due to the cold and dry air flow from the north, the warm and humid air that has been swirling over our country in summer is forced to retreat, so the clouds and fog in the weather are gradually reduced, and the inclination of the sun is gradually larger, and the ground gets solar heat and gradually decreases, and the temperature will be lower day by day, and the autumn wind usually makes the water vapor lower and the air transparent. As a result, the night sky is usually brighter, and the moonlight is usually brighter.

2. From an astronomical point of view.

The moon is not always only in the middle of the year. Because the moon usually reflects the sun's light to brighten, so from the moon, the strength of the moonlight should be related to the size of the moon's reflective surface, and the moon's distance from the earth is related to the moon's distance from the sun.

And the Moon usually revolves around the Earth, and the Earth's orbit is elliptical. And the nearest location is not necessarily fifteen. The first day of the lunar calendar is usually fixed"Shuo"，"Look"It depends on the movement of the moon and usually occurs in the lunar calendar.

Ten. Five, sixteen, two days, or even seventeen (such as this year);In addition, the Earth's orbit around the Sun is also elliptical, and perihelion is generally on the lunar calendar.

Ten. January, December, not August.

The moon revolves around the earth in an elliptical orbit, and it generally takes 29 and a half days to "walk" from a full moon to the next full moon, which is called a "synodic moon". The "pace" of the moon rotation is fast and slow, and the time of the moon's "looking" is different every month, and the probability is "the moon of fifteen and sixteen rounds".

In addition, because our country is an agricultural country, the Mid-Autumn Festival, the end of the autumn harvest, is to enjoy and harvest and the season, everyone has leisure to reunite, play moon cakes, and have time to appreciate the moon, so at this time from the psychological feeling, it is also the most round moon.

The moon is always round!!

1. The moon entrusts the lovesickness between lovers.

Farewell on a Bright Moon Night" is speechless, there is no noise in the moon, and the bright moon has light and love. After farewell, lovesickness is like the moon, and the water between the clouds reaches the layer city.

The moon is born on the sea, and the end of the world is at this time. The lover complains about the night, and Na Kuan is lovesick at night". Zhang Jiuling's "Looking at the Moon and Huaiyuan" vividly describes the mentality of men and women in love.

The two are very far apart, and the language of love in their hearts cannot be directly expressed to each other, and they can only look at the moon to relieve their lovesickness.

2. The moon entrusts the homesickness of the wanderer, and the moon entrusts people's longing for their hometown and relatives.

The moon became the poet's most wordless testimony of nostalgia. The poet misses his homeland and relatives, and often pins his hopes on the bright moon, which can really be described as "the bright moon sends lovesickness for thousands of miles". The moon shortens the geographical distance in people's psyche, just as a villager from his hometown gives a special sense of intimacy to a wanderer.

3. The moon entrusts the frustration and loneliness of the literati and the writers, and the moon is the sustenance of the frustrated literati.

The moon has become a lonely moon, a cold moon, and a cold moon in the pen of the frustrated.

The cold pond crosses the crane shadow, and the cold moon buries the flower soul.

Li Shangyin's poem "Untitled" has the verse "Xiaojing but the clouds and temples change, and the night chant should feel the cold moonlight", "The night chant should feel the cold moonlight" is not that the moonlight is really cold and warm, but that the moon constitutes the bitter psychology of the lonely and frustrated.

4. The moon pours out the pain of the worries of the family and the country.

Representative works: Zhang Dai's "Nian Nujiao Ding Hai's Mid-Autumn Festival Apartment", Jiang Kui's "Yangzhou Slow".

5. The moon becomes a symbol of eternity.

The moon hangs alone in the sky, which evokes people's vast cosmic consciousness and historical consciousness, and makes people have a philosopher-like perception of seeking the true meaning of life. The image of the bright moon is often used as a symbol of eternity. The poet stood in the moonlight and had a kind of nostalgia that could not be concealed, and the moon became a witness to the vicissitudes of life at this time.