Fall runs September 22- December 21.
Autumn, also known as fall in North American English, is one of the four temperate seasons. Autumn marks the transition from summer to winter, in September or March, when the duration of daylight becomes noticeably shorter and the temperature cools down considerably.
See more about the fall season here:
https://www.vox.com/science-and-health/2018/9/20/17873846/fall-equinox-2018-autumnal
