What is happening at the tropic of canser on December 21?

On December 21, the winter solstice occurs in the Northern Hemisphere, marking the shortest day and longest night of the year. At the Tropic of Cancer, which is located at approximately 23.5° North latitude, the sun is directly overhead at noon during the summer solstice, but on December 21, it is at its lowest point in the sky. This results in cooler temperatures and shorter daylight hours for regions north of the Tropic of Cancer, while areas to the south experience longer days and warmer weather.