How did the year, month and day come about, and what is the origin of the year, month and day?

The year first came from agriculture, and in ancient times, people called the growth cycle of the valley as the year, which originated in the Zhou Dynasty, and was officially fixed in the Western Han Dynasty, and then continued to this day.

There is a legend about the origin of the year, it is said that "year" is a kind of fierce beast, endangering the people, and later people take firecrackers, wear red clothes, beat gongs and drums, paste red couplets, etc., which have evolved into the customs of the New Year.

Year, Month, and Day: A unit of time.

The origin of the year, month and day is:

The movement of matter on which these three concepts are based is independent of each other. According to precise measurements, the time it takes for the Earth to revolve around the Sun is about an mean solar day, which is called a return year. The interval between one new moon and the next one occurs in succession is a mean solar day, which is called a synodic month.

Calculation method:

The calendar is the law of estimating the length of the year, month, and day and the relationship between them, and formulating the chronological order"Calendar"。The method of arranging the number of integer months in a year, the number of integer days in a month, and the method of choosing the starting point of the year are called calendars.

The complexity of the calendar problem lies in the fact that the two cycles of the return year and the synodic month are so fragmented, that they are the same"day"The relationship between kilometers and meters is not as simple as the relationship between kilometers and meters; Moreover, they cannot communicate with each other.

Therefore, the calendar always takes care of one and the other, and cannot coordinate two cycles at the same time. For these two reasons, the calendar is generally divided into three categories; Lunadic, solar, and lunisolar calendars. Focusing on the coordination of the relationship between synodic and lunar calendars is called the solar calendar, referred to as the solar calendar; The lunisolar calendar that takes into account both the synodic month and the return year, the calendar month and the calendar year.

The origin of the year, month and day: according to the rotation of the earth, people have produced the phenomenon of day and night alternation, which also formed the concept of "day"; According to the moon's rpm around the earth, the new moon was born, thus forming the concept of "moon"; The concept of "year" was formed based on the phenomenon of the alternation of seasons produced by the earth's revolution around the sun.

The year, month, and day is a unit of time, which is composed of three concepts on which the movement of matter is based independently. According to precise measurements, the time for the earth to revolve around the sun is about an average solar day, which is called the return year; The time interval from one new moon to the next one occurs in succession is a mean solar day, which is called a synodic month.

The calendar is used to estimate the length of the year, month, and day and the relationship between them, and the law that establishes the chronological order is called the "calendar". The method of arranging the number of integer months in a year, the number of integer days in a month, and the method of selecting the starting point of the year are called calendars.

The origin of the year, month and day is: human beings formed the concept of "day" according to the phenomenon of the rotation of the earth and the alternation of day and night; The concept of "month" is formed according to the rotation of the moon around the earth, which produces synodism, and the concept of "year" is formed according to the phenomenon of the alternation of seasons produced by the rotation of the earth around the sun.

A year is the time when the Earth revolves around the Sun (one revolution). The total length is 365 days and 1 4 days (days), that is, 365 days, 5 hours, 48 minutes and 46 seconds, which is called the "return year". For the convenience of application, the year on the calendar does not use the return year, but the full number of days.

The common year of the Gregorian calendar is 365 days, and the leap year is 366 years, with a leap every four years and a less leap every 100 years. The number of days used is called a "calendar year" in the calendar.

One year is also a cycle of climate change, the climate changes from cold to hot, and then from hot to cold; This includes the entire process from farming to harvesting. Therefore, from very early times, people have used the natural law of climate changes in hot and cold cycles as the unit of calculation of time, and the year has been used as the basis for formulating the calendar.

The United Nations designated 2009 as the International Year of Astronomy, and 400 years ago, in 1609, Galileo Galilei used an ancient telescope to discover black spots on the sun, impact craters and peaks on the surface of the moon, and moons orbiting Jupiter. Copernicus believed that the planets revolve around the sun, not the earth. Galileo's discovery confirmed this theory of Copernicus.

The earliest units used to measure time were three independent of each other: year, month, and day

Day: The time it takes for the Earth to rotate once around its axis.

Year: The time it takes for the Earth to make one revolution around the Sun is about 365 25 days, 11 minutes and 13 seconds.

During the reign of the ancient Babylonian kingdom, the calendar was introduced as simply a year of 360 days and 12 months. This primitive calendar is very coarse, first of all, the month is 30 days, which is inconsistent with the cycle of synodism, and the year is 360 days, which is also inconsistent with the actual length of the year of the return. So later there was an improvement, the normal is still equal to 12, the big month is 30 days, the small month is 29 days, the big and small moon phases, a total of 354 days in a year, and then use the method of intercalation to supplement it and the lack of the return year, so that there are 13 months in the year with the leap month.

The Babylonian calendar places the first month of the year on the vernal equinox, and its first month corresponds to the late March to mid-April of the current Gregorian calendar, and the principle of placing the leap month is to keep the first month of the year around the vernal equinox as much as possible. Before the 6th century B.C., there was no rule for intercalation, but it was announced by the king at any time according to the situation. After the 5th century B.C., there was a fixed leap week, first 8 years and 3 leaps, then 27 years and 10 leaps, and finally 19 years and 7 leaps in the 4th century B.C.

In addition, the Babylonian calendar is not a new day, but a day that begins in January with the day of the new moon and the first moon. In addition to the year and month, the Babylonians came up with another unit of time, the week, and named the seven days of the week after the sun, moon, and five planets.

Hello, this is some background about the year, month and day.

This** inside is the specific reason for the year, month and day, I hope it can help you, thank you for your question, I wish you a happy life.