Tell me about the calendar.

The big characters on the calendar are the solar calendar, and the small characters below the big characters are the lunar calendar.

First, the solar calendar:

1, the solar calendar, also known as the solar calendar, is a calendar based on the movement period of the earth around the sun.

2. The month and date of the solar calendar are very consistent with the position of the sun on the ecliptic. According to the date of the solar calendar, we can clearly see the changes of cold and warm seasons in a year; But every month, you can't see the new moon, the new moon, the new moon.

3. The Gregorian calendar prevailing in the world today is a solar calendar, with 365 days in a normal year, 366 days in a leap year, one leap every four years, one leap in a hundred years and another leap in the 400th year, that is, there are 97 leap years every 400 years.

4. The average length of Gregorian calendar is only 26 seconds away from the tropic year, which needs 3300 years of accumulation.

Second, the lunar calendar:

1. The lunar calendar is one of the traditional calendars in China, also known as the old calendar, the Han calendar and the ancient calendar. After the revolution of 1911, it was changed to the western solar calendar (Gregorian calendar), while the modern lunar calendar belongs to the yin-yang calendar.

2. In the traditional calendar of China, the lunar calendar mainly refers to the calendar arranged according to the change of the moon phase cycle, that is, the calendar based on the new moon to determine the calendar months and twelve calendar months in a year. During the development and evolution of the calendar, it combined with the 24 solar terms in the trunk calendar to form the lunar calendar (Han calendar), which was used to guide agricultural production scientifically.

3. Although the lunar calendar and lunar calendar are commonly known as ancient calendar, Chinese calendar and old calendar, there are differences between lunar calendar and lunar calendar (Han calendar). The traditional lunar calendar (Han calendar) is actually a combination of yin and yang, not a traditional lunar calendar.

Refer to the above? Baidu encyclopedia-solar calendar

Refer to the above? Baidu encyclopedia-lunar calendar