What's the difference between a perpetual calendar and a yellow calendar?

As we all know, the perpetual calendar is the oldest solar calendar in ancient legends of China. In order to commemorate the achievements of the compilers of perpetual calendars, this calendar was named "perpetual calendar". The perpetual calendar in use now is actually an annual calendar that records the dates of a specific solar calendar or lunar calendar within a certain time range (such as 100 years or more), which is convenient for people in need to inquire and use.

The yellow calendar, also known as the old yellow calendar, the imperial calendar and the children's calendar, etc. , is a kind of almanac that can display Gregorian calendar, Lunar calendar, Ganzhi calendar and other calendars at the same time, and has a large number of rules and contents related to seeking good fortune and avoiding evil. No matter which version of the yellow calendar, it basically includes: solar terms, taboos, directions and other basic good and bad information, which is mostly linked to the lunar calendar and lunar calendar, which is an important basis for most people to choose dates.

When we need to choose a date, we will look through the yellow calendar and choose a day marked "suitable", especially a day marked "taboo". However, due to the numerous versions of the yellow calendar, the labels of appropriate taboos between different versions are not exactly the same, and even the same day is marked in this yellow calendar and the wedding is marked in another yellow calendar. Which one should we trust in this situation? At this time, we can choose a more authoritative Gregorian calendar, such as the prescription book of the King James Association in Siku Quanshu, or simply choose a festival where relatives and friends have time and the Gregorian calendar is auspicious.

Generally speaking, the Gregorian calendar time of the old calendar and the perpetual calendar is basically the same. If you are particularly entangled in the choice of taboos, you can also choose a trusted master to consult, or simply look at the authoritative almanac to choose the date according to your actual situation.