How to distinguish lunar calendar, lunar calendar, solar calendar and Gregorian calendar? What are the same meanings?

Lunar calendar and lunar calendar have the same meaning, while solar calendar and Gregorian calendar have the same meaning. The differences are as follows:

First, the time is different.

1, lunar calendar: the lunar calendar takes the moon's orbit around the earth as a cycle, 1 month ≈30.4369 days, 30 days for the big month and 29 days for the small month. By adding leap months, the average number of days in each year is close to the solar calendar, so as to adjust the four seasons. There is a leap month in the summer calendar about every two or three years.

2. Gregorian calendar: The earth's cycle around the sun is 1 year ≈ 365.2422 days. A year is divided into 12 months, big month 3 1 day, small month 30 days, and February only has 28 days. The mantissa of four years has accumulated to *** 1 day, and it was added in February of the fourth year, and there were 29 days in February this year.

Second, the calculation method is different.

1, Lunar Calendar: Astronomically, it mainly refers to a calendar arranged according to the phases of the moon, which is calculated by the moon circling the earth once (based on the sun, the actual moon runs more than once).

2. Gregorian calendar: the month and date of Gregorian calendar are very consistent with the position of the sun on the ecliptic. According to the date of the Gregorian 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.

Third, the sources are different.

1, Lunar calendar: Lunar calendar is the law of celestial movement observed by ancient Chinese. In ancient times, the era of dry branches was adopted. According to Wan Mingying, a historian of Ming Dynasty, it was invented when the dry branches were determined to be emperors according to the clear records in the ancient documents of China, and it was recorded in detail in his book "Three Rings". The invention of trunks and branches marked the emergence of the most primitive calendar, which was used to calculate the age by numbers.

2. Gregorian calendar: The earliest source of Gregorian calendar can be traced back to the Gregorian calendar of ancient Egypt. The Nile is the lifeblood of Egypt, and it is precisely because of the need to calculate the flood cycle of the Nile that astronomy and solar calendar in ancient Egypt came into being.

Seven thousand years ago, they observed that after Sirius rose at the same time as the sun for the first time, the Nile began to flood in fifty or sixty days, so they took this day as the beginning of the year and calculated that it was July of 19. The first year was set at 360 days, and later it was changed to 365 days. This is the first solar calendar in the world.

Baidu encyclopedia-lunar calendar

Baidu encyclopedia-solar calendar