Which version of the perpetual calendar book is the most complete?

There is no definite answer as to which version of the perpetual calendar is the most complete. It depends on your needs and preferences.

If you want to check the dates of the solar calendar and the lunar calendar within a certain time range, you can choose some common perpetual calendar books. If you want to know about China's ancient calendar and astronomy, you can choose some ancient almanac, such as taichu calendar method.

In addition, if you want to get a more comprehensive perpetual calendar, you can refer to some modern astronomical calendars or databases, such as the popular astronomical almanac of Purple Mountain Observatory of China Academy of Sciences. These modern astronomical calendars or databases usually provide more comprehensive and accurate astronomical data and calendar information.

In a word, which version of the calendar book to choose is the most comprehensive, and it needs to be decided according to your needs and preferences.