How long is the winter night from solstice?

The winter solstice is the 22nd of the 24 solar terms. At this time, the meridian of the sun reaches 270, and the sun shines directly on the Tropic of Capricorn, which is the most inclined to the northern hemisphere and the solar altitude angle is the smallest, so it is also the shortest day and the longest night in all parts of the northern hemisphere. And generally speaking, the higher the latitude, the shorter the day and the longer the night, so the specific duration of the night is different in different regions, generally around 13- 14 hours.