When is the 202 1 Grain Rain solar term? What is the origin of solar terms in Grain Rain?

When is the 202 1 Grain Rain solar term?

202 1 Lunar calendar: 202 1 March 9, 20021April 20, 2002/Gregorian calendar.

Specific time: 04:33: 14 202 1 Grain Rain solar terms, ok?

Lunar calendar: March 9, 202 1 year Gregorian calendar: Tuesday, April 20, 202 1 year.

Suitable for the old yellow calendar

Don't take advantage of Yang Gong's anniversary.

Cleaning sacrifices and seeking medical treatment

Taboo of the old yellow calendar

Don't take advantage of Yang Gong's anniversary.

Don't take the rest.

According to the solar calendar of Grain Rain solar terms in 202 1, Grain Rain is the anniversary of Yang Gong's death, which is a fatal day.

What is the origin of solar terms in Grain Rain?

Grain Rain comes from the twenty-four solar terms, which is the last solar term in spring.

Twenty-four solar terms originated in the Yellow River Basin. As early as the Spring and Autumn Period, four solar terms were set, namely, mid-spring, mid-summer, mid-autumn and mid-winter. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established. In BC 104, the taichu calendar written by Deng Ping officially set 24 solar terms in the calendar, and defined the astronomical position of the 24 solar terms.

Twenty-four solar terms are special festivals in the calendar to express the change of natural rhythm and establish December. A year is divided into four seasons, three months in spring, summer, autumn and winter, and two solar terms in each month. Each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs. The twenty-four solar terms contain a long cultural connotation and historical accumulation, and are an important part of the long history and culture of the Chinese nation.

The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper rotates circularly, and bucket handle rotates clockwise once, which is called one year old. The current 24 solar terms are based on the position of the sun on the ecliptic, that is, the sun's trajectory in one year is divided into 24 equal parts, each 15? Equal to 1, each equal to 1 is a solar term, which begins in the beginning of spring and ends in the great cold.