What is the solar calendar day, the solar calendar day in folk customs?

Solar Day has two concepts. One is the concept of folklore, referring to the birthday of the sun. Today is June 19th of the lunar calendar, which is recorded in the Yellow Calendar. The second refers to the "Japanese Obsidian Day" in China's ancient "Seven Obsidian Days", which coincides with the western Sunday. Gregorian day, Gregorian day is the predecessor of Sunday. Since ancient times, Rome has been designated as a rest day, and people engage in worship activities without working. Latin, died in solis. Sunday refers to the day after Saturday and before next Monday. The Latin name of Sunday is dies solis, which means Sun Day. French is dimanche, which comes from Latin and means "Lord's Day". English is Sunday. It comes from Sunday. Russian is вокресенье, which means "Sunday".

Modern science believes that the solar day is a day and night. It is sidereal day (the rotation period of the earth)+the revolution angle of the earth in one day (0.986).

The time of solar day is not equal. According to the time calculation of long tropical year and short tropical year, under the action of solid tide, the difference between long solar day and short solar day is 4 seconds. This proves that the rotation of the earth is not uniform.

The origin of folk sun festival;

The earliest and most popular solar day in China's history is June 19th of the lunar calendar. In Rizhao, there are customs of celebrating the Sun Festival, offering sacrifices to the Sun God and celebrating the Sun's birthday.

In China's lunar calendar, only June 19 is the Sun Day (that is, the birthday of the sun) and the enlightenment day of the Bodhisattva.

The sun worship custom in Rizhao area is the Tiantai Mountain Lower Sun Festival (Old Mother Temple Fair) with the longest history, the largest scale and the most extensive influence.

Regarding the history of the old mother temple, Wang Yan in the Qing Dynasty recorded in "Whispers-Collection of Meteorites": "Rizhao Meteorite: Shipenshan, 40 miles south of Rizhao County, Yizhou Prefecture." Zhang Mingyun, Zilan, Huainan:' In the past, the four poles were abandoned, Kyushu was cracked, the sky was not covered, and the land was incomplete; Fire never goes out, water never stops; Wild animals eat people, while birds prey on the old and the weak. So nuwa refined five-color stones to make up the sky, and the broken claws were enough to set up four poles, killing the black dragon and helping Jizhou, and accumulating reed ash to stop the lewd water. Tianbu, four poles are positive; Water is dry, Jizhou is flat; When a sly bug dies, it will ruin people's livelihood; Return to the state and hold a round of days in your hand. "There is still a horseshoe-shaped crater on the top of the mountain, and meteorites are scattered in it. At the foot of the mountain, a meteorite stands outside the south gate of Yutao Luonan.

When the temple fair (Sun Festival) of the old mother temple began is not recorded. According to legend, since ancient times, Rizhao people have the custom of catching temple fairs. While offering sacrifices to the gods, people should also carry out commercial and folk entertainment activities. Therefore, every year, on the birthday of the Sun God on June 19th of the lunar calendar, the old mother temple under Tiantai Mountain will hold a temple fair, which is a great event in Taoluo and Rizhao. Hundreds of villagers in Fiona Fang came to the temple fair, offering sacrifices to the sun and mother, and praying for a bumper harvest and happiness. The villagers will also display and exchange the local products they produce, and at the same time invite special art groups to perform programs. It is said that the scene is grand and lively. During the Northern Wei Dynasty, Hui Shen built Tiantai Temple near the mother temple of Tiantai Mountain. Since June 19th of the lunar calendar is also the enlightenment day of Guanyin Bodhisattva, Buddhist culture has naturally integrated into the local custom of Sun Festival. Therefore, on the day of the Sun Festival on June 19th of the lunar calendar, people should not only worship the sun and its mother, but also worship the Bodhisattva. It is worth noting that the building of Shihu Temple itself also embodies the combination of primitive sun worship and Buddhist culture. It is said that temples are carved with beams and painted with buildings, and the main hall is dedicated to Buddha statues. Murals are traditional myths and legends. How to bathe in the sun, the goddess fills the sky, and the Goddess Chang'e flying to the moon and Dayi shoot the sun.

The mother temple fair (Sun Festival) was a large-scale festival that lasted until liberation. Later, a bizarre wooden knife murder accident occurred at the temple fair, and the temple fair activities were forced to be interrupted. At that time, the troupe staged the plot of Guan Gong's plan to behead Cai Yang in The Romance of Three Kingdoms. It is said that the actor who played Guan Gong held a wooden knife and cut off the head of the actor who played Cai Yang with his hand. Since then, the temple fair has been terminated. But among the people, people still keep the custom of eating bread on the day of the Sun Festival.