Q: What is the difference between the beginning of winter astronomically and the beginning of winter in meteorology?

The winter season begins astronomically and officially on the day of the winter solstice, and continues until the date of the spring equinox, because the four seasons depend astronomically on the position of the Earth in relation to the sun, and the direction of the tilt of its axis. For meteorologists, winter in the northern hemisphere begins at the beginning of December and ends at the end of February.