Equinox
"Vernal Equinox" means "half", which means that one part is divided into two parts, the day and night are evenly divided, and the heat and cold are balanced. In addition, the vernal equinox also means to divide the spring equally. Traditionally, the spring is from the beginning of spring to the beginning of summer, and the vernal equinox is in the middle of three months of spring. Therefore, the vernal equinox in ancient times was also known as the "mid day", the "day and night equinox" and the "mid spring moon". On the day of the spring equinox, the sun shines directly at the earth's equator, and the days and nights are equal. According to Wu Cheng of the Yuan Dynasty, in his book "The Seventy second Order of the Moon", he explained: "In the middle of February, half of the moon is divided, which is half of the ninetieth day, so it is called" the moon is divided ". In addition," In the Spring and Autumn, there are numerous dews ", which says:" In the spring, half of the moon is divided into yin and yang, so the day and night are both cold and hot. "The lunar calendar book:" The Douzhiren is spring
Release time: 14:08:54, March 19, 2022
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