When did China start to use the AD year China

On September 27, 1949, after the First Plenary Session of the Chinese People's Political Consultative Conference, the newly established People's Republic of China (PRC) adopted the Gregorian calendar and the Gregorian calendar, which is common to most of the countries in the international community, as the calendar and the year of the year. But it did not abolish the lunar calendar, and today's traditional Chinese festivals are still based on the lunar calendar.

The year we now belong to is the "A.D. Chronology", which originated in the West and was adapted from the Western Julian calendar. In 1582 AD, Pope Gregory officially promulgated and began to implement the AD chronology by using the year of Jesus' birth as the first year of the AD, which is now the world's common method of chronology.

Each year of the A.D. calendar is based on the time it takes for the Earth to revolve around the sun, hence the name "solar year.

Extended information:

In China's ancient history, the Taiyin Calendar was used, but the Taiyin Calendar recorded the months, the months and the months, such as in the Book of Psalms. "The fire flows in July, and the clothes are awarded in September"; "The ice is chiseled and rushed in December" and so on, and for the record of the year is based on the emperor's year number. Changes in the number of the year were made at the time of the change of dynasty.

So, we said in ancient times that this year is which year, are used by the emperor ascended to the throne to change the year for the first year, such as "Kangxi first year", "Kaiyuan eight years," and so on, the specific conversion into the current AD chronology needs to be specifically projected.

Our country from 1949, the Chinese people **** and the country's first political consultative conference began to establish the use of "AD chronology", the abolition of the year system. Therefore, 1948, the 37th year of the Republic of China, was the last year of the Chinese year system.

From here onward, combined with the historical records, we will find that the first year of the Yuan Dynasty was in a period of the Western Han Dynasty, in which Emperor Pingdi of the Western Han Dynasty assumed the throne and changed the year number to Yuan Shi. Therefore, the first year of AD was also the first year of Emperor Ping of Han Dynasty, and this coincidence is very meaningful in history. Emperor Ping was reigning as a thick, Wang Mang assisted in the government, and after 5 years, Wang Mang was not Emperor Ping and established a new dynasty.

After the introduction of the AD chronology in China, the period before the first year of the AD is now BC, so the Xia, Shang, Zhou, Spring and Autumn and Warring States, and Qin, which we are familiar with, are all BC, and these are documented in historical records.

Currently, the established Xia-Shang-Zhou Chronology sets the Xia Dynasty as beginning about 2070 BC, the Xia-Shang divide at about 1600 BC, Pan-Geng's relocation of the capital at about 1300 BC, and the Shang-Zhou divide (the year of King Wu's conquest of the Zhou Dynasty) as 1046 BC.

There is no historical record of the history before this time, but archaeologists have been able to date for much longer periods of time through technological means of dating. The Neolithic Yangshao culture dates from about 5,000 to 3,000 BC, and the Longshan culture from about 2,500 to 2,000 BC.

Baidu Encyclopedia - A.D. (dating system)