China invented 24 solar terms in ancient times. Why do you use the Gregorian calendar?

First of all, the 24 solar terms are divided according to the position of the sun on the ecliptic (the orbit of the earth around the sun).

The traditional summer calendar in East Asia (lunar calendar) is a kind of "combined calendar of yin and yang", which is formulated according to the operation of the day and the month respectively: the part of the month is determined based on the new moon, and the year of the year is determined based on the tropical year (solar year). Each tropical year of the solar calendar is about 365.2422 days, and the 24 solar terms are divided accordingly. The solar calendar, also known as the solar calendar, is a calendar based on the movement cycle of the earth around the sun. The Gregorian calendar, which is popular in the world today, is a kind of solar calendar. So the 24 solar terms use Gregorian calendar time.

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