Light snow is twenty-four in twenty-four solar terms. On the 22nd or 23rd of November, the sun reaches the Yellow Skeleton by 240 °, now known as Snow Sesame. At this point, the sun is located in the declination of -20 ° 16 ', the day Beijing time is only 9 hours and 49 minutes, the midday sun is only 29 ° 50'.

 "Snowy" solar terms, the Big Dipper at night pointing Northwest West (quite clock face 10 o'clock). After 20:00 every night, if you observe the stars outside, you can see the big dipper westward, while the "W" -shaped Cassiopeia escalates into the sky. Instead of the Big Dipper, she coordinates the search for Polaris and navigates stargazing people. Quadrilateral Pegasus is approaching empty, winter Star logo - Orion has been in the East Horizon probe child.

Into the solar terms, the vast northwest wind in China began to become regulars, the temperature dropped gradually below 0 ℃, but the earth is not too cold, although the beginning of snowfall, but the snow is not large, so that snow. At this point chin decline, yang rise, which caused the world unreasonable, yin and yang do not pay, all lost vitality, heaven and earth blocked and into the winter. The first snow will appear in the area to the north of the Yellow River to remind people that it is warm and warm.

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