Beginning of summer, Xiaoman, Mangzhong, Summer Solstice, Minor Heat, and Great Heat

1. Beginning of Summer: Dou refers to the southeast; the sun's yellow longitude is 45°. The beginning of summer. The festival falls on May 05-07 in the Gregorian calendar.

2. Xiaoman: fighting nails; the yellow longitude of the sun is 60°. Xiaoman reflects the climate characteristics of heavy rainfall and heavy rainfall, and the rivers in Xiaoman are full of water. The festival falls on May 20-27 in the Gregorian calendar. ?

3. Ears: fighting refers to oneself; the yellow longitude of the sun is 75°. "Mangzhong" is a homophonic pronunciation of "busy planting", indicating that all crops are "busy planting". The festival falls on June 05-07 in the Gregorian calendar.

4. Summer Solstice: Douzhiwu; the sun’s ecliptic longitude is 90°. When the sun shines directly on the Tropic of Cancer, it is the summer solstice. The hot summer is coming. The festival falls on June 21st and 22nd in the Gregorian calendar.

5. Xiaoshu: Douzhi is pungent; the yellow longitude of the sun is 105°. Shu means hot; Xiaoshu means the climate starts to get hot. The festival falls on July 06-08 in the Gregorian calendar.

6. Great Heat: Dou Zhi C; the yellow longitude of the sun is 120°. The hottest time of the year. The festival falls on July 22-24 in the Gregorian calendar.

Extended information

Social impact

Historically, the twenty-four solar terms have long gone abroad and gone to the world, affecting the Korean Peninsula and Japan. ,Southeast Asia. Although the seasonal changes in some places are not obvious, the people there still inherit and promote the twenty-four solar terms and the culture attached to them, which fully demonstrates its cultural value. As early as ancient times, the twenty-four solar terms have been accepted by other countries such as Korea and Japan, and have been used in modern times based on the actual conditions and national culture of their countries.

The twenty-four solar terms have been introduced to Japan for more than 1,000 years, and some solar terms are included in Japan’s legal holidays (festivals). In ancient times, Japan has always used the Chinese lunar calendar and followed the "twenty-four solar terms" schedule. As the Central Plains of China changed its calendars, it used the "Yuan Jiali", "Linder Li", "Dayan Calendar" and "Five Ji Calendar" successively. ” and “Xuan Ming Li”.

After that, Japan began to use the "Zhenxian Calendar" and "Tianbao Calendar" which were more suitable for the local people and were written by Japanese. Japanese local festivals based on the "Twenty-Four Solar Terms" are called "Miscellaneous Festivals". Since the "Twenty-Four Solar Terms" are originally determined based on the earth's revolution, the dates are still determined according to the solar terms according to the traditional algorithm.

For example: "Setsubun" in Japanese miscellaneous festivals is the day before the "beginning of spring" in China's "Twenty-Four Solar Terms"; "Higan" is a week including the vernal equinox, autumnal equinox, etc. In contemporary Japan, the vernal equinox is also designated as a public holiday.