What day is it today? (June 22nd) Isn't the pattern on Google strange?

Summer solstice is one of the 24 solar terms of the lunar calendar. It starts at about June 22nd every year when the sun reaches 90 degrees of the yellow meridian. This is the first definite solar term. In the 7th century BC, the ancients used earth gauges to measure the shadow of the sun, and the daylight was the shortest from the summer solstice, so it was called "the summer solstice".

Seventy-two Seasons of the Moon: "Mid-May ... summer is fake and extreme, and everything here is fake and extreme." Cui Lingen's "Three Rites and Righteousness" is collected in the Classic Interpretation of Han Academy: "Summer is the middle, and there are three meanings: one is the extreme of qi, the other is the beginning, and the third is the north of tomorrow. Therefore, it is called. "

The direct point of the sun on the summer solstice

On this day, the sun is almost direct to the Tropic of Cancer, which is the longest day in the northern hemisphere. Then the sun shines directly to the south, and the days become shorter. Because the energy radiated from the sun to the ground is still much more divergent than that radiated from the ground to the air, the temperature continues to rise in a short time. Astronomy stipulates that the summer solstice is the beginning of summer in the northern hemisphere.

"ambition" also has extreme meaning. In the traditional theory of yin and yang, the summer solstice is a solar term, and the spirit of the sun reaches its peak and begins to collect.

The Book of Changes is a divination in May, with one yin starting from the bottom (summer solstice, one yin born, winter solstice, one yang born), which is the season of summer solstice. Although the yang is strong, it has lost its strength, and the yin is long and the yang is exhausted.

Unlike the winter solstice, China people rarely celebrate the custom of summer solstice; But in northern Europe and other places, midsummer festival is an important festival for local residents.