Why does our Congress have two kinds of calendars?

China calendar is one of the earliest countries in the world that invented the calendar in China, and its appearance has certain influence on the economic and cultural development of China. Lunar calendar, one of the traditional calendars in China, is also called lunar calendar, lunar calendar, ancient calendar, yellow calendar, summer calendar and old calendar. The lunar calendar is the lunar calendar. On the one hand, the orbit of the moon around the earth is regarded as a "moon", and the average length of the moon is equal to the "first moon", which is the same as the principle of the lunar calendar, so it is also called the "lunar calendar".

The lunar calendar depends on the needs of different agricultural and animal husbandry production conditions; Gregorian calendar is in line with international standards.