What are the twenty-four solar terms?

Twenty-Four Solar Terms Beginning of Spring: Dou refers to the northeast.

The solar longitude is 315 degrees.

It is the first solar term among the twenty-four solar terms.

The implication is that spring has begun, "when the sun rises and hibernates, everything becomes spring." After the beginning of spring, everything revives and becomes full of vitality, and the four seasons of the year begin.

Rain fights against Ren.

The solar longitude is 330°.

At this time, the spring breeze blows everywhere, the ice and snow melt, the air is moist, and the rain increases, so it is called rain.

People often say: "The beginning of spring is getting warmer, and the rain is busy bringing fertilizer."

Jingzhe: Dou Zhiding.

The solar longitude is 345°.

This solar term means that the weather will get warmer after the "beginning of spring", the spring thunder will begin to ring, and various hibernating animals dormant in the soil will wake up and start to move, so it is called Jingzhe.

During this period, the eggs of overwintering insects will also begin to hatch.

The spring plowing season has entered in some areas of our country.

The proverb goes: "After the Jing of Insects, it is warm, and the old horns of the toad sing folk songs." "The Jing of Insects plows the soil, and the earth's air becomes clear on the vernal equinox." "Thunder cries before the Jing of Insects arrive, and the heavy rain is like a dragon." Vernal Equinox: Dou Zhiren.

The solar longitude is 0°.

On the vernal equinox the sun is above the equator.

This is the midpoint of the 90 days in spring. On this day, day and night are equal in the northern and southern hemispheres, so it is called the vernal equinox.

After this day, the direct position of the sun moves northward, making the days longer and nights shorter in the northern hemisphere.

So the Vernal Equinox is the beginning of spring in the Northern Hemisphere.

Overwintering crops in most areas of my country have entered the spring growth stage.

Farmers' proverbs from various places include: "The vernal equinox comes first, and rice and money are fought for" (Guangdong), "The spring equinox is full of rain, and the summer equinox is full of fire" (Sichuan), "Every family is busy when it rains on the spring equinox, so plant melons and beans first and then transplant the rice seedlings" (Hubei)

), "Grow vegetables on the spring equinox and pick melons in the hot summer" (Hunan), "Grow hemp and beans on the spring equinox, and plant wheat and garlic on the autumn equinox" (Anhui).

Qingming: Dou Zhiding.

The solar longitude is 15°.

At this time, the climate is refreshing and warm, vegetation begins to sprout new branches and buds, all things begin to grow, and farmers are busy with spring plowing and planting.

In the past, on the day of Qingming Festival, some families would put willow sticks at the door and go outing in the countryside to pay homage to the tombs. This is an ancient custom.

Guyu: Dou Zhigui.

The solar longitude is 30°.

It means rain produces grains. Since rainwater moistens the earth and grains grow, Grain Rain means "rain produces grains."

As the proverb goes, "Before and after Grain Rain, you plant melons and beans."

Lixia: Dou refers to the southeast.

The solar longitude is 45°.

It is the beginning of summer. From then on, everything becomes prosperous and prosperous.

It is customary to regard the Beginning of Summer as an important solar term when the temperature rises significantly, the heat is approaching, thunderstorms increase, and crops enter the peak season.

Xiaoman: fighting nails.

The solar longitude is 60°.

Starting from Xiaoman, summer crops such as barley and winter wheat have already produced fruits and have full grains, but are not yet mature, so they are called Xiaoman.

Mang Zhong: The Beidou is pointed.

The solar longitude is 75°.

At this time, it is most suitable to sow cereal crops with awns, such as late grain, millet, millet, etc.

If you plant awns and crops after this time, they will not mature well.

At the same time, "awn" refers to crops with awns such as wheat, barley, etc., and "kind" refers to seeds.

Ear seeds indicate that crops with awns such as wheat are mature.

Around the time of Ear Grain, in the middle and lower reaches of the Yangtze River in central my country, rainfall increased and temperatures rose, entering the plum rain season with continuous rain. The air was very humid, the weather was extremely hot and muggy, and various utensils and clothing were prone to mold. Therefore, in the middle and lower reaches of the Yangtze River in my country, Also called "mold rain".

Summer Solstice: Beidou points to B.

The ecliptic longitude of the sun is 90°.

When the sun is at the "summer solstice" point of 90° ecliptic longitude, the sun shines almost directly over the Tropic of Cancer, and the sun is highest at noon in the Northern Hemisphere.

This day is the day with the longest day and the shortest night in the northern hemisphere. From this day on, the hot season begins, when all things in the world grow most vigorously.

Therefore, in ancient times, this day was called the northern solstice, which means the day when the sun reaches its northernmost point.

After the summer solstice, the sun gradually moves south, the days in the northern hemisphere are getting shorter and the nights are getting longer.

Xiaoshu: fighting refers to pungency.

The solar longitude is 105°.

The weather is already very hot, but it’s not hot yet, so it’s called Xiaoshu.

At this time, it was around the time of Chufu.

Great Heat: Dou Zhi C.

The ecliptic longitude of the sun is 120°.

Great Heat is the hottest solar term of the year. Around the time of Qin Erfu, high temperatures of 40℃ often occur in many places in the Yangtze River Basin.

It is necessary to do a good job in preventing heatstroke and cooling down.

There is a lot of rain during this solar term. As the proverb goes, "Small heat or severe heat will drown the mice." Pay attention to flood prevention and waterlogging.

Beginning of Autumn: Beidou points to the southwest.

The solar longitude is 135°.

From this day, autumn begins, the air is crisp, the moon is bright and the wind is clear.

After that, the temperature gradually dropped from the hottest.

End of summer heat: Douzhiwu.

The ecliptic longitude of the sun is 150°.

At this time, the heat of summer has ended.

The heat is about to dissipate.

It is a turning point in the temperature drop.

It is a symbol of cooler weather and the end of summer.

Bailu: Douzhigui.

The solar longitude is 165°.

As the weather gets cooler, more moisture and condensation will form on the ground.

Autumn Equinox: Fighting fingers are already in place.

The ecliptic longitude of the sun is 180°.

On the day of the autumnal equinox, just like people in spring, the sun shines almost directly on the equator, and day and night are almost equal.

From this day on, the position of direct sunlight continues to move from the equator to the southern hemisphere, and the days in the northern hemisphere begin to become shorter and the nights longer.

According to the autumn theory of our country's old calendar, this day is exactly half of the ninety days of autumn, so it is called the autumnal equinox.

But according to astronomical rules, autumn in the Northern Hemisphere begins at the autumnal equinox.

Cold Dew: fighting nails.

The solar longitude is 195°.