How long are the days of summer solstice and winter solstice?

The length of the summer solstice in Beijing is about14h51minute; The length of the winter solstice is about 9: 9.

Beijing is 39 55 ′ 48 ″ north latitude and116 24 ′ 0 ″ east longitude. The sunrise and sunset times of vernal equinox, summer solstice and autumn solstice are: 07:30 and 16: 30 respectively, and summer solstice is: 4:30 and 65438 respectively.

In ancient China, the summer solstice was divided into three phases: "The first phase of staghorn dissolution; Second, wait for cicadas to start singing; Third-class Pinellia ternata. " Although elk and deer belong to the same family, the ancients thought they belonged to yin and yang. The deer's horn faces forward, so it belongs to Yang. On the solstice of summer, Yin Qi was born, and Yang Qi began to decline, so the front antlers began to fall off.

Winter solstice is the earliest of the 24 solar terms, but most people don't know that the origin of winter solstice actually comes from the planning of a national capital. As early as more than 3,000 years ago, Duke Zhou began to measure the shadow with the method of soil rules and measure the position of the world in Luoyi, which was a move of political significance at that time, but it became one of the festivals that affected future generations for thousands of years.