When is it cold at Jiaotong University?

Jiaotong University caught a cold in 2023 65438+ 16:00 20231October 20th.

The Great Cold is the last of the 24 solar terms, and it is called "Great Cold" every year when the sun reaches 300 degrees on June 20-2 1 day of the Gregorian calendar. There is a folk saying that "a slight cold is the most important thing, and it is cold without wind." Great cold refers to extremely cold weather.

During the severe cold solar term, the atmospheric circulation is relatively stable, and the adjustment period of circulation is about 20 days. When this circulation is adjusted, there will often be a wide range of rain and snow weather and strong winds to cool down. When the west of 80 degrees east longitude is a long wave ridge and East Asia is a coastal trough, under the influence of northwest wind flow control and constantly supplemented cold air, China will have a sustained low temperature.

Cold traditional customs

1, eating glutinous rice: It is the day of the great cold and solar terms, and the ancients are popular to eat food made of glutinous rice.

2, dust removal: also known as "removing the old" and "dust removal", it is a kind of general cleaning: "Every family paints the wall and sweeps away the ominous" to sweep away the bad luck; On the contrary, "the twelfth lunar month does not remove dust, and the plague will be recruited in the coming year." Dust removal is generally carried out on the 23rd and 24th of the twelfth lunar month, that is, on the day of "offering sacrifices to the stove". Avoid words when removing dust, and pay attention to "silence is better than sound".

3. Paste the window: that is, paste the window with new paper, "Paste the window and seek good luck." For the sake of beauty, some people will cut some auspicious patterns and stick them on the windows, so it is also called "stick grilles", which is usually held on the 25th day of the twelfth lunar month.