The ancient calendar in China was called the lunar calendar, so what can the lunar calendar be called?

Lunar calendar is a traditional calendar in China, which has been used in China for a long time. It emphasizes the division of the 24 solar terms, which is of great guiding significance to agricultural production. Some people also call them summer calendars and lunar calendars. Before 19 12, this calendar was used as an official calendar in various dynasties in China. The real lunar calendar is the oldest calendar, and the Gregorian calendar used in Islamic countries and regions today is one of them. Both the lunar calendar and the lunar calendar are the existing chronological calendars in China. On many occasions, many people confuse the two and think that the lunar calendar is the lunar calendar and the lunar calendar is the lunar calendar. In fact, there is a big difference between the two. The main differences are as follows: 1. The dominant ideas of the two are different. The lunar calendar and lunar calendar in China are based on the movement of the moon, and the number of days per month is approximately equal to the change period of the moon phase-29.5306 days. In the arrangement of months, there are generally 30 days in the big month and 29 days in the small month. After two months, the average number of days in each month is 29.5 days, which is basically equivalent to the length of Wang Shuoyue. This is the homology of the two. Therefore, both of them can accurately reflect the profit and loss of the moon phase: the full moon in the middle of the month and the new moon at the beginning of the month. However, the solar terms in the China lunar calendar can also reflect the temperature changes in the four seasons, such as "May and June" and "Winter Month", indicating that May and June in the lunar calendar are the season when wheat is ripe and the temperature is high. "twelfth lunar month" is the middle of winter with low temperature; February and March, and July and August are the transitional seasons of temperature. Because the time period in the 24 solar terms is determined by the position of the sun on the orbit of revolution, which is the ecliptic. Therefore, the lunar calendar in China has some characteristics of the solar calendar, which can be used to guide agricultural time and arrange crop rotation. The lunar calendar, which is often said, can only reflect the change of the moon phase, but not the change of temperature, so it is a pure "lunar calendar" and cannot guide agricultural activities. The arrangement of the first day of each month is different. The China lunar calendar sets the date when the sun and the moon meet as the first day of each month, that is, the first day. Pingshuo was used before the Tang Dynasty, but it was changed to Dingshuo in the early Tang Dynasty, that is, the first day was set on the true Shuori, and there was definitely no "moon" that night. The first day of the lunar calendar used in the solar calendar is based on the new moon, that is, after the sun meets the moon, it is equivalent to the second or third day of the lunar calendar, and the "new moon" can be seen that night. 3. There is a difference between the two years. Due to the appropriate leap principle, the approximate length of the average calendar year is equal to the length of the Tropic of Capricorn (365.2422 days). Therefore, the lunar year is basically synchronized with the solar year, but the lunar year is only a simple accumulation of 12 lunar months, with a length of 29.5 × 12 = 354 days, which is about 165438+ with the solar year. Therefore, after the length is accumulated, there will be an inversion between the month and the cold and heat. The Lunar New Year is usually in winter, but it may come in summer. 4. China's lunar calendar, which is used in different regions, is widely used in mid-latitude areas of the northern hemisphere, especially in the national conditions of China. Because it can reflect the alternation of cold and summer and the change of the moon phase, it is widely used in Chinese settlements in China and Southeast Asia. However, the use of the lunar calendar is mainly limited to Islamic countries, and it is only used when celebrating religious festivals. In a word, the lunar calendar in China contains much richer geographical significance, which is a kind of lunar calendar and different from the lunar calendar.