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What do the four solar terms in 24 solar terms mean?

Summer is full and summer is full: long summer, small summer, mangzhong and summer.

1, changxia

Long summer is a festival that reflects seasonal changes. Standing is the beginning, summer is the season. According to the traditional understanding, this is the beginning of that summer. Usually on May 5th or 6th of the Gregorian calendar.

On the day of the long summer, the sun moved to 45 degrees of the yellow meridian. At noon, the sun shadow was measured with standard meters, with a length of four inches, three feet and six minutes, which is equivalent to today's 1. 108 meters. Bucket handle, watching the Big Dipper at night, points to the third place, that is, the southeast direction. This stage is usually in April of the lunar calendar, also called Mitsuki, early summer, Huaixia and Xia Meng.

2. Xiaoman

Xiaoman is one of the 24 solar terms. On May 2 1 or 22 every year, when the sun reaches 60 degrees of the yellow meridian, it is regarded as a small full day. Its meaning was interpreted by the ancients as: "the nail bucket is small and full, and everything is long and full." The wheat here is small and immature, hence the name. " This means that barley, winter wheat and other grains grow up gradually, but they are not full, so they are called Xiao Man.

3. Miscanthus

The awn seeds are planted around June 6 in the solar calendar every year, and the longitude of the sun is 75 degrees. At noon that day, the sun shadow was measured with standard gauge, and its length was 2 feet, 4 inches and 4 minutes, equivalent to 0.585 meters today. Bucket handle, who watches the Big Dipper at night, is pointing in the third direction, that is, south by east. This stage is usually at the end of April or the beginning of May in the lunar calendar, also called noon.

The awn solar term is most suitable for sowing grain crops with awns, such as late grain, millet and millet. The awn seed is also the dividing point of planting crops. Because of the hot weather, it has entered a typical summer, and agricultural planting is bounded by this season. After this solar term, the survival rate of crops is getting lower and lower.

4. Summer solstice

Summer solstice is the earliest of the 24 solar terms and the hottest season in a year, so we should pay attention to health. The customs of summer solstice mainly include eating noodles, wheat rice, wheat grains, weighing, eating dog meat and wearing jujube flowers.

As early as the 7th century BC, our ancestors determined the summer solstice by measuring the shadow of the sun, usually on June 22nd in the solar calendar. As early as the Zhou Dynasty, there were ceremonies to worship the gods on the solstice of summer. At that time, people thought that offering sacrifices to gods in the summer solstice could eliminate epidemics, famines and people's hunger in China. The summer solstice is the hottest and the sun is the highest in a year.