Constellations are calculated according to the national calendar, but every year our country is different and the constellations also change. What happened? Is the national calendar fast?

The national calendar, also called Gregorian calendar, is the current international calendar. The Gregorian calendar is customized based on the time that the earth revolves around the sun for one year, ***365 days, 5 hours, 48 minutes and 46 seconds. The average year is only an integer of 365 days, not a mantissa; 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 is accumulated *** 1 day, which is added to February of the fourth year. This year is called leap year. So February in leap year has 29 days.

The lunar calendar, which is the traditional calendar in China, is customized for one month when the full moon is short, ***29 and a half days. For the convenience of calculation, the big moon is customized for 30 days and the small moon is customized for 29 days.

Both calendars are fixed by themselves, but if they are converted to each other, they will change every year.

When you say "China is different every year", you should mean that the corresponding lunar calendar date is different every year.

This statement is correct in itself, but the constellation is not calculated according to the lunar calendar.

Constellations correspond to the solar calendar, which was invented by Babylonians in Cuba thousands of years ago. At that time, there was no concept of solar calendar in China. At that time, there was only the lunar calendar, and the number of days in each year was different between the lunar calendar and the solar calendar, so there was no way to connect the constellations with the lunar calendar.

Just like you can't match 12 with the solar calendar.