What is an almanac (what's the difference between an almanac and a calendar)

The almanac was called "general book" or "constitutional book" in ancient times. Almanac is a book that arranges data such as year, month, day, solar terms and anniversary according to a certain calendar for reference. "Almanac" is a book that sorts out data such as year, month, day, solar terms and anniversary for reference according to a certain calendar. It reflects the objective laws of time change and meteorological change in nature, and has important guiding significance for agricultural production and people's daily life. 1000 has been widely used by the general public for more than years.

In the feudal dynasty, it was also called "Imperial Book" because it was promulgated by the emperor. As early as ancient times, our country had an official position dedicated to observing astronomical phenomena and calculating calendars. In the Qin and Han Dynasties, Taishi Order was established, in the Tang Dynasty, Taishi Bureau was established, in the Song and Yuan Dynasties, Sitian Supervisor was established, and it was renamed Qin Tian Supervisor in the Ming and Qing Dynasties. During the two to seven years of Zhenguan in Ming Dynasty, the Calendar Bureau led by Xu Guangqi hired professionals to compile the Calendar of Chongzhen. At the beginning of Qing Dynasty, missionaries presented the almanac of Chongzhen to the emperor of Qing Dynasty and renamed it New Book of Western Calendar. After that, for a long time, studying and studying western astronomy became the main work of astronomers at that time, which had a great influence on the development of astronomy in China.

China's earliest almanac was framed into a shaft and written with a brush. Around the ninth year of the Tang Dynasty, almanac engraved with wooden boards appeared. Up to now, the development of almanac can't be compared with the past almanac. It is presented to people with a brand-new look. As far as its types are concerned, there are many kinds of calendars, such as annual calendar, monthly calendar, lunar calendar, pregnancy calendar, desk calendar, wall calendar and perpetual calendar. With the continuous progress of social informatization, science and technology culture, its content is all-encompassing and colorful; The design forms are not only diversified, but also full of cultural and artistic flavor. All kinds of almanac and almanac with celebrity calligraphy, poems and paintings are often collectibles, so now more and more people pay attention to collecting all kinds of almanac and almanac.