Meteorologists (weather scientists) divide the year into four neat seasons made up of three full months each. This makes calculating weather statistics and averages much easier.
Best for: Gardening, tracking weather patterns, and simplicity. when do the four seasons start and end
The ancient Celts defined seasons based on the solar cross-quarter days (the midpoints between solstices and equinoxes): The ancient Celts defined seasons based on the
This is why, in Ireland, February 1 is often considered the first official day of spring, and November 1 the first day of winter. This is why
The answer depends entirely on your context.
To complicate matters further, different cultures around the world define seasons in their own unique ways.