Calendar is a daily used publish used to record time. The calendar with one day printed on one sheet is called daily calendar, calendar with one month printed on one sheet is called monthly calendar while calendar with the whole year printed on one sheet is called yearly calendar. Calendars have various forms, such as wall calendar, desk calendar, and calendar card. In recent years, there have been the digital calendar.
Monthly calendar are usually printed with pictures. Calendar is kind of decoration .
Nowadays, the wall calendar and desk calendar in each of our house are developed from calendars and it was about one hundred years in history. As for the date when the calendar appeared, no one could tell. According to historical data, about 1100 years ago in the first year of Yong Zhen when Emperor Shunzong of Tang was on the throne there was calendar in the imperial palace. At that time, the calendar is also called almanac, which not only records dates but also is important information for the editing of history. The calendars at that time is similar to calendars nowadays.
The almanac was divided into 12 volumes and the number of days in each month determines the pages of each volume. The month and date are put on each page and then the almanac is kept temporarily by the eunuchs serving the emperor. The eunuchs wrote on the empty page the words and deeds of the emperor each day and after checked and approved by the emperor at the end of each month, it is passed onto the historiographer for filing. The historiographer then combines the content of the almanac with the great event in the court and all over the nation. After refining and polishing, it becomes the national history. Later, since calendar brought much convenience to people’s lives, calendar gradually entered the houses of high-ranking official in the court and after some change, they become their own calendar. Still later on, as the calendar become popular and homely, people printed the sexagenary cycle, climate and phenology in a lunar month, solar terms, and white days on the almanac all on the calendar and left blanks for recording events.