Which version of the perpetual calendar is more authoritative?

Nevertheless, the current perpetual calendars all have shortcomings:

1, counting nine, counting volts, are not marked, which makes many people confused.

2, there are too many superstitions, such as what is "taboo" and what is "appropriate", these dross.

Main advantages:

With the development of science and technology, modern perpetual calendars can display multiple sets of calendars such as solar calendar, lunar calendar and trunk calendar at the same time, and can also contain various functional information such as good luck, holidays and reminders. Its carriers include almanac publications, electronic products, computer software and mobile phone applications, which are very convenient for people to query and use. Ten thousand years is just a symbol, indicating a long time span.