A once-in-a-century solar term English

Your presence in China is a very important solar term. It is said that it is difficult to meet two springs in a year, and it is difficult to make spring in a hundred years. But what does this sentence mean? In other words, it is difficult to have two years of beginning of spring in a year. And if New Year's Day falls on the same day as beginning of spring, it's a once-in-a-century event. Here it is. It is difficult to have two springs in a year, and it is difficult to have spring in a hundred years. According to the solar calendar, it is the year when the sun returns to China. A tropical year needs 365 days plus 1/4 days. However, the actual time for the sun to orbit the earth for one year is 365.2422, so there is a difference, with a difference of 0.0087 days.

So in order to solve this difference, we set a leap year every four years and add a leap day on February 29th. The lunar calendar takes the time for the moon to circle the earth for one month. Among them, the big month is 30 days and the small month is 29 days, which is quite different from the big month 3 1 day and the small month 30 days in the solar calendar.

But in fact, the actual number of days is different from what we can calculate, which is 29.5306 days per month. So the number of days in the next year is 354. There is less 1 1 day in the solar calendar, so in order to balance the dates, the ancients thought of the method of setting leap months, that is, leap years have one more month. That is 13 months. A popular folk saying is that 19 will have seven leap years.

So, to sum up, there will be no solar terms in beginning of spring in 20 19, and there will be two in 2020. That is to say, when there are two springs, in fact, these are just normal laws. There is no basis, no reason, everyone will be full of blessings at any time. May all your wishes come true.