New Year's Day, which is January 1st in the Gregorian calendar, is commonly known as "New Year" in most countries in the world. Yuan means "beginning", and the beginning of all numbers is called "Yuan"; Dan means "day"; "New Year's Day" means "the first day".

"New Year's Day" usually refers to the first day of the first month in the calendar. In our country, the term "New Year's Day" has existed since ancient times, and it first appeared in "Book of Jin" in literary works. "New Year's Day" in the history of our country refers to "the first day of the first month". The calculation method of "first month" was very inconsistent before the time of Emperor Wu of the Han Dynasty.

After the Revolution of 1911, in order to "go to Xiazheng, so it is in accordance with the agricultural time, and from the Western calendar, so it is easy to count", the first year of the Republic of China decided to use the Gregorian calendar (actually used in 1912), and stipulated that January 1 of the Gregorian calendar was "New Year", but it did not It's not called "New Year's Day". In 1949, the People's Republic of China adopted January 1 of the Gregorian calendar as New Year's Day, so "New Year's Day" is also called "Gregorian calendar year", "New calendar year" or "Gregorian calendar year" in China.

Excerpted from Baidu Encyclopedia - New Year's Day.