Which solar term has the biggest temperature difference between day and night in the northern hemisphere?

The solar term with the largest temperature difference between day and night in the northern hemisphere is the white dew.

Analysis:

The Millennium is a typical autumn solar term, and the temperature drops rapidly. At night, the temperature has reached the condition that steam condenses into dew. The dew in the field is crystal clear in the morning, and it is named Bailu because it turns white.

During this period of the Millennium, it is generally hot during the day, but it is obviously cool in the morning and evening, and it feels much more comfortable. This is the characteristic of the Millennium solar terms. The Millennium solar term is the solar term with the largest temperature difference between day and night throughout the year. In the ten days of this solar term, the temperature difference between day and night is generally 10℃ to 15℃, especially in the morning and evening, it is very cold, so you should wear more clothes.

The origin of Millennium Festival:

Twenty-four solar terms are special festivals in the calendar to express natural rhythm changes and establish "December construction". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning.

The Millennium is the fifteenth of the twenty-four solar terms, which marks the end of the Qiu Meng season and the beginning of the Mid-Autumn Festival, and is an important festival reflecting the temperature changes in nature. According to the explanation of "white dew" in the twenty-four solar terms-"water and soil condense dew, autumn belongs to gold, golden white and white dew, and qi begins to be cold".

The custom of Millennium Festival:

1, clear dew:

China folks have the custom of "picking clean dew" in the Millennium solar terms. In Li Shizhen's Compendium of Materia Medica in the Ming Dynasty, it was recorded: "When the autumn dew is numerous, it is gathered on a plate and fried like rice, which makes people not hungry for many years."

"The autumn dew on the head of a hundred herbs is collected when it is not embarrassing. The more sick you are, the thirst will be quenched, and people will be light and hungry. " The flower is exposed, which is a good color. Thus, dew-clearing has become the most special "ceremony" in the Millennium.

2. Sacrifice to Yu Wang:

Yu Wang is the legendary water control hero Dayu, and the fishermen on Taihu Lake are called "water gods". Every year on the eighth day of the first month, Tomb-Sweeping Day, the seventh day of July and the Millennium, incense parties are held to commemorate Yu Wang. Among them, Tomb-Sweeping Day and Bailuyuan have the largest Spring and Autumn Festival, which lasted for one week.