The upcoming Jiachen Year of the Dragon will have the phenomenon of "no spring at both ends", that is,There is no spring day throughout the year, and the folk call such a year "no spring year", and it is rumored that such a year is not suitable for marriage, which has aroused public concern. Astronomical science experts said"No spring year" is a normal phenomenon in China's lunar calendar, and it's very common.
How did the "No Spring Year" come about? Yang Jing, a member of the Chinese Astronomical Society and a director of the Tianjin Astronomical Society, explained that the ancients in China divided the year into 24 solar terms, reflecting the different positions of the earth in orbit around the sun, and the current international Gregorian calendar is also a calendar formulated according to the law of the earth's revolution around the sun, so the corresponding dates of the solar terms in the Gregorian calendar are basically fixed, but the corresponding dates in the lunar calendar are very unfixed. This is because the lunar calendar is based on the two natural cycles of the moon phase and the annual apparent movement of the sun, and at the same time, in order to take into account the changes of the cold and summer seasons in a year, the ancients also adopted the method of setting leap months, which is known to many people as "seven leaps in 19 years". In this way, the lunar year is divided into leap year and peaceful year, with a total of 13 months and about 384 days in a leap year and about 354 days in 12 months in a normal year. Spring Festival is a lunar festival, and its date in the Gregorian calendar can be as early as January 21 and as late as February 20. Since the date of the beginning of spring in the Gregorian calendar is around February 4, as the Spring Festival changes in the date of the Gregorian calendar, there may be two days of the beginning of spring in the whole lunar year, or there may not be one day of the beginning of spring. 
Taking the upcoming Year of the Dragon as an example, the Spring Festival is on February 10, and the beginning of spring is on February 4, and the Spring Festival in 2025, which is the Year of the Snake, is January 29, and the beginning of spring is on February 3, so there is no beginning of spring in the whole year of the Dragon. Yang Jing said that "no spring year" is not uncommon, but very common, with an average of once every 2 to 3 years. Statistics show that in the 100 years of this century, there have been 37 years of two-headed spring, 37 years of no spring, and 26 years of single spring, of which 12 times were the beginning of spring at the beginning of the year and 14 times were the beginning of spring at the end of the year. Yang Jing said that the "no spring year" is just that there is no spring day, not that there is no spring solar term, nor is there no spring, and it has nothing to do with good fortune and misfortune, weddings and funerals. **Xinhua.