How was the calendar born?

The first calendar in China was about 4000 years ago. According to a page of Oracle bone calendar in Oracle Bone Inscriptions, it is proved that the calendar of Yin Dynasty has reached a considerable level. Calendar is the oldest almanac of all mankind, and this page of Oracle Bone Inscriptions is also called calendar.

According to historical records, this calendar was used in the palace of Yongzhen Garden in Tang Shunzong about 1 100 years ago. At that time, the calendar was also called the imperial calendar, which not only recorded dates, but also was an important material for compiling national history. The calendar at that time was similar to that now. Divide the year into 12 volumes, and the number of pages in each volume is determined according to the number of days in each month, and write the month and date. Then give it to the eunuch who served the emperor for temporary storage. The eunuch recorded the emperor's words and deeds on a blank page every day, and submitted them to the emperor for review at the end of each month. After approval, they were sent to the historian for filing. Historians combined the calendar with the events of the imperial court and China, refined and polished it, and recorded it, which became a national history. Later, because the calendar brought a lot of convenience to life, it gradually entered the families of many senior officials in North Korea. After some changes, compile your own calendar. Later, with the development of popular calendars and family calendars, people also printed the monthly calendars, solar terms and auspicious days in the almanac on the calendars, leaving a large blank for recording.