Under the meteorological season scheme, the four seasons are each allotted three months, making it easier to calculate and compare weather conditions in recent years. The difference with astronomical seasons is that the start of winter and summer is based on whether the North Pole is oriented toward or away from the sun due to Earth’s natural tilt. The astronomical change of seasons is marked by either a solstice or an equinox, according to NOAA. When the Earth’s axis isn’t tilted in favor of either direction, it is referred to as an equinox or the start of spring or fall.
Sam Busa