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

1, the yellow calendar, also known as the old yellow calendar, is the same calendar, and there is no difference.

As a traditional calendar in ancient China, the Yellow Calendar was originally called the Imperial Calendar. Books on the code of conduct followed by ancient emperors include not only astronomy, meteorology and seasonal seasons, but also some taboos that people should abide by in their daily lives. Because it was calculated and published by the court and promulgated by the emperor, it was called the imperial calendar. After the Revolution of 1911, the imperial system was overthrown, and the "imperial calendar" was homophonic and rewritten as "yellow calendar".

It is called the Old Yellow Calendar because it is the calendar of the old year, which is an ancient metaphor.

2. Perpetual calendar: the oldest solar calendar in ancient legends in China, which records the dates of specific solar and lunar calendars within a certain time range (such as 100 years or more) for the convenience of people in need. Ten thousand years is just a symbol, indicating a long time span.

The yellow calendar belongs to a kind of perpetual calendar.

Extended data:

In modern times, the main contents of the yellow calendar include: Gregorian calendar, lunar calendar and trunk calendar, trunk and branch calendar, twenty-four solar terms, twelve gods, week, orientation and so on. That is, people in ancient China recorded their daily likes and dislikes on the calendar as a guide to action.

China's traditional calendar is based on heavenly stems and earthly branches's arrangement, combination and circulation, which means circulation and reappearance. It is this "recurrence" that makes it meaningful to choose a date to avoid it. The fundamental basis for the ancients to formulate calendars and determine auspicious days is the sun, the moon and the stars.

Studying the Yellow Calendar will not only help people to know more specifically the spread mode of the Yellow Calendar and its influence in society, but also have a good chance to turn it into a key to understand ancient popular culture and daily life.

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