How to distinguish the vernal equinox from the autumn equinox? Look at the direct point of the sun

The difference between vernal equinox and autumnal equinox, vernal equinox refers to the end of winter, while autumn refers to the slow start of winter, so maybe the weather will be a little similar, so how should we distinguish vernal equinox from autumnal equinox? It is said that you can only look at the direct point of the sun? How should I look at this matter? Let's find out.

May be interested in the difference between beginning of autumn and the autumnal equinox.

The difference between vernal equinox and autumnal equinox: the vernal equinox is cold, and the autumnal equinox tends to be cold gradually.

Characteristics of solar terms in vernal equinox:

At the vernal equinox, theoretically, the world is as long as day and night (see the dawn). After the vernal equinox, the days in the northern hemisphere are getting longer and shorter, and the nights in the southern hemisphere are getting shorter and shorter.

At the vernal equinox, there are no extreme days and nights in the world. After the vernal equinox, it began to be extremely daytime near the North Pole, and its scope gradually expanded. Near the South Pole, the polar day ends and the polar night begins. The scope is getting bigger and bigger.

During the vernal equinox, the daily average temperature in all parts of China rose steadily to above 0℃ except the alpine mountain area and the area north of north latitude. At this time, the cold has passed and the temperature has risen rapidly, especially in North China and Huanghuai Plain. The daily average temperature rises to above 10℃ almost at the same time as the rainy areas along the Yangtze River and the south of the Yangtze River, entering a bright spring.

Characteristics of solar terms in autumnal equinox:

First, the time between day and night is equal, with long days and short nights, and short days and long nights. On this day, the sun reaches longitude 180 degrees and points directly at the equator of the earth, so the 24 hours of this day are divided equally, each being 12 hours; There is no extreme day and night phenomenon in the world.

Second, the climate changed from hot to cold. According to China's ancient seasonal division method with beginning of spring, Changxia, beginning of autumn and beginning of winter as four seasons, the autumnal equinox lived in autumn for 90 days and divided the autumn equally.

From beginning of autumn to the first frost, this is only half of the 90-day journey. At the autumnal equinox, the Yangtze River basin and its vast northern area have entered autumn, and the daily average temperature has dropped below 22℃. The cold air mass in the north began to have a certain impact, and the rainy season just ended in most areas, with a cool breeze blowing gently.