"Autumn, often known as fall in the US and Canada, is one of the four temperate seasons. Autumn marks the transition from summer into winter, in September (Northern Hemisphere) or March (Southern Hemisphere) when the arrival of night becomes noticeably earlier. One of its main features is the shedding of leaves from some trees as they pave way for further growth."
Autumn is the season that marks the transition from summer to winter. Here, its affiliation color is orange.