Fall (seasons) < Official >

In the Northern Hemisphere, fall typically begins around September 22nd or 23rd, marking the autumnal equinox. This day is also known as the first day of fall, and it is the moment when day and night are approximately equal in length. In the Southern Hemisphere, fall begins around March 20th or 21st.

Fall, also known as autumn, is one of the four temperate seasons that marks the transition from summer to winter. It is characterized by shorter daylight hours and a noticeable drop in temperature, which triggers significant biological changes in both plants and animals. For many, fall is defined by the vibrant change in leaf color and the shedding of foliage from deciduous trees as they prepare for the dormant winter months. Environmental and Biological Impact fall (seasons)

The cooling temperatures of the fall season have far-reaching effects on the natural world. These changes are particularly evident in the following areas: In the Northern Hemisphere, fall typically begins around