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Vernal equinox
At 23:33 Beijing time on March 20, the "Spring Equinox" festival will be ushered in.
The vernal equinox is the fourth of the twenty-four solar terms, which occur around March 21 of each year. On this day, the sun reaches 0 degrees ecliptic longitude (vernal equinox).
This day is half of the spring, so it is called the spring equinox. On the day of the vernal equinox, the position of the sun is directly above the equator, and the duration of day and night is almost equal, 12 hours each.
After the vernal equinox, the position of the sun gradually shifts northward, and the northern hemisphere begins to have long days and short nights. Therefore, the spring equinox was also called "day and night equinox" in ancient times.
The three seasons of the spring equinox: the first weather of the yuan bird, the second weather of the thunder is the sound, and the third wait is the beginning of the electricity. This means that at this time, the swallows return to the north, and when it rains, there will be lightning and thunder in the sky.
"A thousand flowers and a hundred flowers compete for the bright". After the spring equinox, the severe cold has passed, and the temperature has risen rapidly, especially in North China and the Huanghuai Plain, which has entered a bright spring at this time. From the perspective of climatic laws, at this time, the precipitation in Jiangnan increased rapidly and entered the spring "peach blossom flood" stage.
The "nine nine plus one nine, ploughing cattle everywhere" in the nine-nine song refers to the spring equinox. The ancients believed that at this time, the frozen soil was completely melted, and the "earth gas penetrated", which was a good time to sow seeds. Therefore, the agricultural proverb has such sayings as "sting to the spring equinox, and the next planting is not relaxed" and "the spring equinox wheat gets up, a moment is worth thousands of gold", indicating that the season of spring ploughing is busy has begun.
CHUN FEN
Although children may not need to start "farming", how can they miss this great time on this spring day?
Not long ago, it was "Arbor Day", and many schools carried out tree planting activities:
Schools in Yuexi County have actively organized various forms of "Arbor Day" education activities. (Source: Yuexi Education And Sports WeChat)
Meishan City carries out "green environmental protection" theme education activities with distinct themes and diverse forms. (Source: Meishan Education and Sports WeChat)
"When the South Park is in the spring and early in the morning, the wind and the smell of horses are hissing. Green plums are like bean willows like eyebrows, and day-long butterflies fly. "At the time of the spring equinox, the sun is shining, the willows are green, and the beautiful atmosphere of spring is everywhere.
Parents and teachers may wish to take advantage of this great spring light, but also take their children to plant a tree and a flower by hand, and feel the strong spring atmosphere!
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