Which is more accurate, perpetual calendar or perpetual calendar?

Perpetual calendars and encyclopedias are accurate But these two calendars have different functions.

1, commonly known as Shu Tong in Han nationality. So almanac and almanac are the same thing, and neither is accurate.

2. The perpetual calendar is mainly used to query the date, that is, the specific year, month and day.

3. Like the Gregorian calendar, it is used to choose auspicious days, that is, to choose auspicious days, but for different purposes.

4. Solemnly declare: The answer is for reference only. Please don't be blind and superstitious.