What do lunar calendar, solar calendar, lunar calendar, solar calendar and AD mean?

The lunar calendar, also known as the lunar calendar, corresponds to the solar calendar in astronomy, which refers to the calendar mainly arranged according to the moon phase cycle; Not according to the earth's orbit around the sun. It has 12 moons a year, about 354 or 355 days. Mainly according to the fact that the moon revolves around the earth for one month, it is called Shuowangyue, which lasts about 29.588 days and is divided into big month 30 and small month 29.

In agrometeorology, the lunar calendar is slightly different from the lunar calendar, lunar calendar, ancient calendar and old calendar, which refers to the lunar calendar traditionally used in China. In astronomy, the lunar calendar is actually a kind of lunar calendar.

2. Gregorian calendar

The solar calendar (also called solar calendar) is a calendar based on the orbital position of the earth around the sun or the periodic changes of the direct sunlight points on the earth;

According to the moon phase cycle, the actual year is 365.438+0897 days, divided into large and small months, 1 month, March, May, July, August,1month and1February, each with 3 1 day; April, June, September and November are 30th. February is the 28th in a normal year and the 29th in a leap year. In China culture, the word "solar calendar" is sometimes called Gregorian calendar, which is different from the traditional lunar calendar or lunar calendar in China.

3. Lunar calendar

The lunar calendar is a combination of yin and yang, which is widely used in the folk traditions of East Asia. According to ancient legends, it was produced in the era of the Yellow Emperor or the Xia Dynasty, also known as the Yellow Calendar and the Summer Calendar. After the founding of the Republic of China, Sun Yat-sen announced the adoption of the western Gregorian calendar, while the traditional calendars in China were called the old calendar and the traditional calendar.

After the founding of People's Republic of China (PRC), the Gregorian calendar was adopted, and the old calendar was renamed the Lunar Calendar. In Chinese, the western calendar is also called the solar calendar, so the lunar calendar is often called the lunar calendar, but this calendar is actually a combination of yin and yang.

4. Gregory calendar

Gregorian calendar is a kind of solar calendar, which was introduced into China and adopted in 19 12. Because the traditional calendars in China, such as the lunar calendar, include solar calendar, western calendar, new calendar and Gregorian calendar, it is also called Gregorian calendar in Chinese.

The Gregorian calendar, like julian calendar, has a leap day at the end of February every four years, but it is specially stipulated in the Gregorian calendar that all century years (divisible by 100) have no leap day; Therefore, every 400 years, there are only 97 leap years in the Gregorian calendar, which is 3 leap years less than that in julian calendar. ?

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AD, the Gregorian era, originally known as the Christian calendar, also known as the Gregorian calendar or AD, is a method of chronology that originated in western society. This is a calendar made by Italian doctor and philosopher aloysius Lilius, who reformed julian calendar.

1582, the then Pope Gregory XIII approved its promulgation. It began in the year when Jesus was born. In julian calendar and Gregorian calendars, the day after the birth of Jesus is called the year of Lord Anno?

References:

Baidu encyclopedia-lunar calendar

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Baidu encyclopedia-solar calendar

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Baidu encyclopedia-lunar calendar

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Baidu encyclopedia-Gregorian calendar

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Baidu encyclopedia-a.d.