Seasons are divisions of a year. We usually divide the year into four, though different areas of the world may divide it into two, three, five or another number.
These divisions represent things like the rainy season, the dry season, the cold season, warm season, windy, season, harvest season, etc.
Spring - Time = Beginning of year. Temperature = Cool moist.
Summer - Time = Second quarter. Temperature = Hot and dry.
Autumn - Time = Halfway of the year. Temperature = Temperate to cold and moist.
Winter - Time = Last part/quarter of year. Temperature = Cold and moist or dry.
-Different countries and regions will have their seasons at different times and for different lengths as well as differing intensities.
Universal index - Universal index