Gregorian calendar 199 1 year1kloc-0/month 10 What is the birthday of the lunar calendar?

The fifth day of October in Xin Weinian (Year of the Sheep).

Lunar calendar is one of the traditional calendars in China, also known as lunar calendar, ancient calendar, Han calendar, yellow calendar, summer calendar and old calendar.

In astronomy, it mainly refers to the calendar arranged according to the moon phase cycle, in which the moon orbits the earth once (based on the sun, the actual moon orbits more than once). ) is January, which is a calendar based on the moon. There are twelve calendar months in a year.

In the process of calendar development and evolution, the emergence of 24 solar terms was used to guide agricultural production scientifically, and the lunar calendar (Han calendar) was formed. Although the lunar calendar and lunar calendar are commonly known as ancient calendar, Han calendar, summer calendar and old calendar, there are still differences between lunar calendar and lunar calendar (Han calendar). The traditional summer calendar (Han calendar) is actually a kind of yin-yang calendar.

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Gregorian calendar generally refers to the Gregorian calendar:

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

The calendar year of the solar calendar is approximately equal to the tropic year, and a year is 12 months. This "month" has nothing to do with the first lunar month.

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 and the new moon.

At present, the Gregorian calendar, which is commonly used in the world, is a solar calendar, with 365 days in a normal year and 366 days in a leap year. It leaps every four years, once every hundred years, and once again in the 400th year, that is, there are 97 leap years every 400 years. The average length of the Gregorian calendar is only 26 seconds away from the tropic year, and it takes only one day to accumulate 3300 years.

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