Long summer is the seventh of the 24 solar terms, and there is no specific day. The first solar term in summer indicates the official start of the summer season. The bucket refers to the southeast, and the dimension is long summer. Everything has grown up so far, hence the name long summer. When Beidou bucket handle points to the southeast, it is long summer. May 5, 6 or 7 of the Gregorian calendar every year.

The annual movement track of the sun is divided into 24 equal parts, each equal part is15, and each equal part is a solar term. When the solar meridian reaches 45, it is the long summer node. "Twenty-four solar terms" is a knowledge system formed by observing the annual movement of the sun and recognizing the changing laws of seasons, climate and phenology in a year.

Extended data:

Long summer custom

Although the traditional food customs in long summer all over the country have their own characteristics, the most classic food in long summer is "long summer egg". The day before long summer, many people began to cook "long summer eggs" at home, usually with tea powder or walnut shells, and watched the eggshells turn red slowly and smell delicious all over the house. Tea eggs should be eaten while they are hot. When they are eaten, they should be poured with good wine and sprinkled with some fine salt. The wine is fragrant and fragrant.

At this time, the summer harvest crops entered the late growth stage, the winter wheat blossomed and filled, the rape was close to maturity, and the year of the summer harvest crops was basically a foregone conclusion. Therefore, the agricultural proverb has the saying that "long summer sees summer". The management of rice planting and other spring sowing crops has also entered a busy season. Therefore, China has always attached great importance to the solar terms in long summer.

Baidu Encyclopedia-long summer