Today the shortest day of the year is officially in winter

The shortest day of the year declares the beginning of winter. This very short day coincides with the winter solstice, which falls exactly on December 21, at 10:48 our hour. On December 21, the sun will set about 3 minutes later, at 16:44, but it will be born later, at 7:37 a.m.

Solstice is about six hours later each year than the previous one, and then re-organized every four years in correspondence with the fragile years, presented precisely to avoid the shift of calendar seasons. Winter solstice Day is the shortest day of the year for all countries in the northern hemisphere and the longest for them in the southern hemisphere.

The phenomenon is due to the tilt of the earth's axis and corresponds to the moment when the sun, in its visible movement in the sky, is positioned at its lowest point. On this day, the South Pole faces our star, while in our hemisphere its rays illuminate a smaller surface than what remains in the shade. In an area between the Arctic Circle and the North Pole, the sun does not rise at all during the winter solstice, resulting in 24 hours of darkness.