What does the meaning of the autumnal equinox mean and what does the autumnal equinox mean

Autumnal equinox

The autumn equinox is the sixteenth of the 24 solar terms and the fourth solar term in autumn. Dou Zhi You; The sun reaches 180° ecliptic longitude; It is held on September 22-24 of the Gregorian calendar every year. On the day of the autumnal equinox, the sun shines almost directly on the Earth's equator, and the length of day and night is equal across the globe.

Autumnal equinox"points"That is"Deuce"、"Half"In addition to referring to the equal division of day and night, there is also a layer of meaning that the autumn is equally divided. After the autumnal equinox, the position of direct sunlight shifts southward, and the days in the northern hemisphere are shorter and the nights are longer, the temperature difference between day and night increases, and the temperature decreases day by day.

The autumnal equinox used to be traditional"Moon Festival", the Mid-Autumn Festival by"Autumn festival moon"evolved. On June 21, 2018, *** agreed to establish"Chinese Farmers' Harvest Festival"It was agreed that from 2018 onwards, the autumn equinox will be established every year"Chinese Farmers' Harvest Festival"。

The autumnal equinox has two meanings, one refers to the equinox of autumn, and the other refers to the equinox of day and night.

The autumnal equinox solar term is not only an important agricultural solar term of the Autumn Newspaper Society, but also develops the connotation of celestial worship with the theme of loving life, and also shows the efforts of the ancient Chinese to conform to the seasons and construct social order. In this connotation of solar terms, we fully understand the ancient Chinese people's respect for nature and love for life.

The autumn equinox is one of the four major solar terms along with the spring equinox, summer solstice, and winter solstice, and is the 16th of the 24 solar terms and the fourth solar term of autumn. The word "autumnal equinox" has two meanings, one refers to the equinox, that is, by the time of the autumnal equinox, the autumn is already halfway over; The two fingers equinox day and night, when the sun travels on the ecliptic to 180° of ecliptic longitude, the sun's rays almost directly hit the equator, and most of the earth has equal day and night.

The autumn equinox is a rather complex solar term, involving agriculture, astronomy, personnel and many aspects, which concentrates on the attitude and emotions of Chinese people who respect nature and love life.

First of all, it is a very important agricultural solar term, which is the busy season of autumn harvest, autumn planting and autumn ploughing. On the one hand, the autumn equinox is the harvest time for most crops, such as rice, corn, sorghum, soybeans and sweet potatoes in Northeast China, which begins to harvest rice, corn, sorghum, soybeans and sweet potatoes at the autumn equinox, while autumn harvest farming in North China is nearing the end. On the other hand, the autumn equinox is also the sowing time for winter wheat and other crops, and there is a proverb in North China that says: "The white dew is early, the cold dew is late, and the autumn equinox is the right time to plant wheat."

The autumn equinox is also the key moment for double-cropping late rice in many places in the south to be heading and flowering, and it is necessary to step up field management when determining whether it can achieve high yield. Therefore, there is an agricultural proverb that says: summer is busy for half a month, and autumn is busy for forty days.

The autumnal equinox is the sixteenth of the 24 solar terms, and the time is generally September 22 and 24 in the Gregorian calendar every year. On the day of the autumnal equinox, the sun reaches 180° of ecliptic longitude (the autumnal equinox), almost directly hitting the Earth's equator, and the day and night are equal in length around the world (not taking into account the refraction of the sun's light and the shadow of morning and dusk in the atmosphere). In ancient times, there was a folk activity of "spring festival day, autumn festival moon", and the autumn equinox was the traditional "moon festival" (Mid-Autumn Festival), and the Mid-Autumn Festival evolved from the autumn and evening moon festival.