What is the effective sunshine time on the winter solstice?

The effective sunshine time on the winter solstice is 10.07 hours, and 60 degrees north latitude is 5.52 hours.

The winter solstice is a solar term divided according to astronomy. In ancient times, it was called "short day" and "short day solstice". On the winter solstice, the sun is located at 270 degrees longitude, and the sun shines almost directly on the Tropic of Capricorn. It is the shortest day of the year in the northern hemisphere. There are less than 10 hours between sunrise and sunset in various places in our province. After the winter solstice, as the earth moves in its orbit around the sun, the direct sunlight zone gradually moves northward, causing the days in the northern hemisphere to lengthen and the nights to shorten.

Although the sun has the lowest altitude and the shortest sunshine time on the winter solstice, the heat absorbed by the ground is less than the heat lost. However, the heat accumulated on the ground for a long time in the past continues to be lost, and the temperature near the ground has not yet reached the minimum. , so this is not the coldest time of the year.