Tomb-Sweeping Day is a traditional festival in China. Why is it not the lunar calendar but the solar calendar?

Let's look at the date in Tomb-Sweeping Day. 20 18, the date in Tomb-Sweeping Day is April 4th, but the lunar calendar is March 19. 20 16, April 4th, Tomb-Sweeping Day, March 27th. So if you say that Tomb-Sweeping Day is calculated according to the solar calendar, in fact, your statement is also possible. Most of the lunar calendar dates in Tomb-Sweeping Day are different every year, and Tomb-Sweeping Day is calculated according to the date when the sun moves to a certain position.

Don't forget that although Tomb-Sweeping Day is a traditional festival in China, Tomb-Sweeping Day itself is also a solar term, which belongs to the twenty-four solar terms, so it has a lot to do with the operation of the sun. China has been using the lunar calendar since ancient times, which is what we usually call the lunar calendar. The lunar calendar mainly calculates time according to the law of the moon's movement. We usually say that the full moon is 15 or 16, which is based on the movement of the moon. In fact, our country still uses the solar calendar, that is, we divide time according to the movement of the sun.

The most famous is the 24 solar terms, which we often talk about now, so he divides a year into 24 time periods. Westerners mainly use the solar calendar, which is somewhat different from ours, but basically the same. Therefore, the 24 solar terms are mainly calculated according to the Gregorian calendar, that is, the solar calendar, but because the running time of the sun will be different every year, the time of the 24 solar terms sometimes has some deviations, so the annual time is not necessarily fixed.

So people will question: Why do other traditional festivals in China use the lunar calendar, which we often say, while Tomb-Sweeping Day uses the solar calendar? This is actually a coincidence. Tomb-Sweeping Day happens to be a solar term, and the solar term is calculated according to the solar calendar, so there will be such an interesting thing.