What is the difference between lunar calendar and calendar!

1. Time range: A perpetual calendar is a year that records specific solar and lunar dates within a certain time range (such as 100 years or more). Ten thousand years is just a symbol, indicating a long time span. The calendar is generally one year.

2. Scope of use: Calendar is a daily-use publication used to record dates and other related information. One that displays information for one day on each page is called a calendar, one that displays information for one month on each page is called a monthly calendar, and one that displays information for a whole year on each page is called an annual calendar.

Perpetual calendars generally record various functions such as good and bad fortunes, holidays, reminders and other information related to the almanac, making it convenient for people in need to inquire and use. Ten thousand years is just a symbol, indicating a large time span

Extended information:

The perpetual calendar is the oldest solar calendar in ancient Chinese legends. In order to commemorate the ten thousand years of achievements of the calendar compiler, this calendar was named "Permanent Calendar". The perpetual calendar used now is an almanac that includes a number of years or is applicable to a number of years.

With the development of science and technology, modern perpetual calendars can simultaneously display multiple sets of calendars such as the Gregorian calendar, the lunar calendar, and the Ganzhi calendar, and can also include various functional information related to the lunar calendar, such as good and bad luck, holidays, and reminders; The carriers include almanac publications, electronic products, computer software and mobile applications, which are extremely convenient for people to query and use. Ten thousand years is just a symbol, indicating a long time span.

The lunar calendar is based on the waxing and waning of the moon. The cycle of a synodic month is twenty-nine or thirty days, and the length of a year is only an integral multiple of the month and has nothing to do with the tropical year. The moon has nothing to do with the four seasons of cold and heat. Both the Greek calendar and the Hijri calendar belong to this calendar. In its year, it is impossible to have "Double Spring" or "Blind Year".

The lunisolar calendar is formulated based on the cycles of the sun and moon. A year is divided into twenty-four solar terms according to the movement of the sun, and is divided into months according to the movement of the moon. The twelve small and big moons add up to only 354 or 355 days.

Reference materials: calendar? Baidu Encyclopedia

Reference materials: perpetual calendar? Baidu Encyclopedia