Literally, "Yuan" means "Head" and "Dan" means "Heaven". Together, the two words can be extended to "the first day of the new year". So "New Year's Day" is also called "three yuan", that is, year yuan, month yuan and time yuan. Now people usually call it "the first day of the first month".

It is said that the ancient "New Year's Day" originated in Zhuan Xu, one of the three emperors and five emperors, with a history of more than 5,000 years.

Change the time of New Year's Day;

Legend is interesting, but the origin of "New Year's Day" is closely related to human life. For example, doing farm work requires some accurate time nodes. The beginning of a year has special significance, so humans invented the calendar.

The ancients discovered the natural phenomena of alternation of day and night, lack of moon and distinct seasons. Finally, the cycle of alternating day and night is regarded as a "day", and the "month" is determined with reference to the cycle of moon phase change. The grain ripening cycle represents cold and summer, and is called "year", that is, the time for the sun to circle the earth once.

It took a long time to calculate the above cycle accurately, and the calendar was changed several times, as was the time of "New Year's Day".

The Xia dynasty used the summer calendar, with Meng Xiyue (January) as the first month, and all "New Year's Day" became the first day of the first month; The twelfth lunar month (December) was the first month in the Shang Dynasty, and the "New Year's Day" was changed to the first day of December. The Zhou Dynasty made another revision. The first month of the week calendar is the winter month (1 1 month), and New Year's Day becomes the first day of 1 1 month. After Qin Shihuang was unified, he simply walked forward for a month, and the "New Year's Day" became the first day of October.

It was not until the period of Emperor Wu of the Han Dynasty that it was no longer tossed. Sima Qian was born and founded the calendar. Because it was founded in the first year of Emperor Wu of Han Dynasty, it is also called "taichu calendar". At that time, it was stipulated that Meng Xiyue (January) was the first month, and the first day of Meng Xiyue (the first day of the first month in the summer calendar) was called "New Year's Day". Since then, it has been followed until the end of the Qing Dynasty.

It was not until the Revolution of 1911 overthrew the Qing Dynasty that the government of the Republic of China decided to use the Gregorian calendar and called 1 day of the Gregorian calendar "New Year's Day". Later, People's Republic of China (PRC) was founded. In order to communicate with the world better, we decided to adopt the Gregorian calendar, which is now our universal solar calendar. As a result, the previous "New Year's Day" became the Spring Festival, and 65438+ 10/in the solar calendar took over the New Year's Day.