20 17 165438+ what day is October 30th of the lunar calendar?

20 17 165438+ October 30th The lunar calendar is 65438+ October (big) 13.

Gregorian calendar, also known as Gregorian era or solar calendar, is an international calendar. The algorithm of the Gregorian calendar is closely related to the annual movement of the earth around the sun, in which the Gregorian calendar takes the orbit of the earth around the sun as one year.

Gregorian calendar 19 12 began to be used in China, thus replacing the traditional China calendar. In addition, after the establishment of People's Republic of China (PRC) in 1949, the Gregorian calendar was formally stipulated.

Lunar calendar is a traditional calendar in China, and it is a kind of yin-yang calendar. Among them, the yellow calendar based on the China lunar calendar, also known as the imperial calendar, is a calendar with many characters, indicating the good luck and bad luck of a day.

Lunar calendar is the current modern calendar in China, which belongs to the combined calendar of yin and yang, that is, the combined calendar of lunar calendar and solar calendar. According to the change cycle of the moon phase, each moon phase changes to one month, taking the solar tropical year as the length of a year, and adding 24 solar terms and setting leap months to make the average calendar year adapt to the tropical year.

Lunar calendar is a new calendar used after 1970. Its years are divided into flat years and leap years. The flat years are 12 months and the leap years are 13 months. Month is divided into big month and small month, with 30 days in big month and 29 days in small month, and the average calendar month is equal to the full moon.

The first ten days of a lunar month are customarily called the first day. For example, the second day of January in the lunar calendar is called the second day of the first month, and the eleventh to twentieth and thirtieth days are recorded directly by day. For example, the fifteenth day of January in the lunar calendar (Lantern Festival) is called the fifteenth day of the first month.