Begins around December 21 or 22 . This is the shortest day of the year. Why the Difference?
Thus, two systems exist:
Once upon a time, the world was divided by two different ways of looking at the sky. One group, the , watched the Earth’s tilt as it danced around the sun. They waited for specific moments called equinoxes and solstices to announce a new season. In the Northern Hemisphere, they declared spring on the March equinox (around March 20) and winter on the December solstice (around December 21). months for the seasons verified
Introduction Seasons are recurring intervals defined by Earth's tilt and orbit (astronomical) or by grouping calendar months with similar climate patterns (meteorological). Different communities and disciplines use different definitions. This paper compares the two primary scientific conventions, explains their bases, and offers a verified month-to-season mapping useful for data reporting and public communication. Begins around December 21 or 22
