What do people say in the year of double spring?

As the saying goes, double spring is a leap month and a good year for marriage. China also has a saying: beginning of spring has the meaning of second spring twice, so it is not suitable for marriage.

The double spring year means that there are two solar terms in beginning of spring in a year. The double spring year is a unique phenomenon in Chinese calendar, which is actually caused by the "wrong balance" between the solar calendar and the lunar calendar.

The solar calendar is based on the law that the earth revolves around the sun. The revolution of the earth 1 is 1 year, divided into 12 months, and counted as 365 days (366 days in leap years). The lunar calendar is based on the laws of the moon's profit and loss. The orbit of the moon around the earth is 1 month, and a year is 12 months. The actual number of days is 354 days.

China's calendar is based on the cycles of the sun and the moon. In this way, there is a deviation of 1 1 day between the lunar calendar and the solar calendar, so the lunar calendar has a "leap month" to solve the time difference problem of the lunar calendar.

Double spring years generally appear in leap month years. According to the normal month, the lunar calendar has 24 solar terms in a year, and after the 24 solar terms are replaced, it will enter the next year's solar terms replacement. However, due to the leap month, next year's beginning of spring solar terms will appear on this year's tail. Therefore, the phenomenon of "double spring year" appeared.

In fact, this is caused by the current custom system in China that the first day of the new year is the beginning of the new year. In ancient times, people regarded beginning of spring as the beginning of a new year, so there was no modern "double spring year" in ancient times. The "double spring year" is only the result of the "correction" of the yin and yang calendars, and it is a natural product of the solar terms in the calendar, which has nothing to do with good or bad luck.