What are the introductions to the autumnal equinox solar terms? What is the knowledge about the autu

The autumn equinox used to be the traditional "moon festival". As in ancient times, there was a saying that "spring sacrifice day, autumn sacrifice month". The current Mid-Autumn Festival is derived from the traditional "Moon Festival". Egg erection is not only at the spring equinox, but also at the autumn equinox.

Equally popular.

The autumnal equinox is the 16th of the 24 solar terms and the 4th solar term in autumn. During the autumn equinox, autumn eggs are erected, autumn vegetables are eaten, autumn clothes are added, etc., which are related to different solar terms.

The autumn equinox does not show its head, cut and feed the old cows", the double cropping late rice in the south is heading and flowering, which is a critical period for the formation of yields, and the "autumn equinox cold" weather formed by low temperature and rain in the early morning is the main threat to the double late flowering and fruiting, and we must conscientiously do a good job in forecasting and defense.

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

2. After the autumn equinox, the direct point of the sun continues to move from the equator to the southern hemisphere, and the days and nights in the northern hemisphere begin to be shorter and longer, that is, the days begin to be shorter than the nights in a day; The Southern Hemisphere is the opposite. Therefore, the autumn equinox is also called the descending equinox. And at the North and South Poles, on the day of the autumnal equinox, the sun is on the horizon all day.

After that, as the direct point of the sun continued to move southward, a six-month polar night began near the North Pole, and the range gradually expanded and then decreased. A six-month period of polar day begins near the South Pole, gradually expanding and shrinking.

The autumnal equinox is a transitional season, and when this solar term arrives, the temperature begins to drop in many areas. The cold air from the south meets the warm and humid air that gradually decays, and the rain will take away the heat from the ground and lower the surface air temperature, so the weather will gradually become cooler after the autumn equinox, and the temperature difference at night will gradually widen. After the autumnal equinox, the direct point of the sun begins to enter the southern hemisphere from the equator, and the northern hemisphere begins to have shorter days and longer nights, and the days begin to be shorter than the nights within a day.

Introduction: 1. Send autumn cattle.

The autumn equinox is approaching, and there will be door-to-door delivery of autumn ox figures. The picture is to print the two open red paper or yellow paper on the lunar solar terms of the whole year, and also print the pattern of the farmer ploughing the field, which is called the "autumn cow picture". The people who send the picture are some folk good words and singers, mainly saying some autumn ploughing and auspicious words that do not violate the agricultural time, and each family is more improvised, what to say, and say that the owner is happy and give money.

Although the words come out casually, they rhyme beautifully. It is commonly known as "saying autumn", and people who say autumn are called "autumn officials".

2. Kite flying.

The autumn equinox is also a good time for children to fly kites. Especially on the day of the autumnal equinox. Even adults participate. The kite categories include king-shaped kites, silver carp kites, squinting moth kites, thunder insect kites, and moonlight kites, the largest ones are two meters high, and the small ones are also available.

Two, three feet.