Traditional Culture Encyclopedia - The 24 Solar Terms - What did the long summer solar term mean in ancient times?
What did the long summer solar term mean in ancient times?
Long summer is the seventh of the twenty-four solar terms, which falls on May 5-7 of the Gregorian calendar every year. When the sun reaches 45 degrees of the yellow meridian, it is a long summer. Chang Xia just said that summer has come. This is a warning, but it doesn't mean that it has entered summer. The definition standard of meteorology is that if the daily average temperature in a place is stable above 22℃, it can be determined that summer has begun. Of course, at this time, most parts of South China have entered summer, but the northern region is not so fast, and it is still relatively cool.
In China, only the area south of Fuzhou-Nanling Line is the real summer, where the trees are dark and the day is long, and the balcony reflects the pond. At this time, some areas in the northeast and northwest have just entered the spring, and the average temperature in most parts of the country is around 18 ~ 20℃, which is the mid-spring and late-spring season of "all kinds of red and purple competing for grass". In May, Sophora japonica blooms in many places.
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