Fall is more often referred to as autumn in regions outside North America. It is the time of year that falls in the middle of the year's two polar extremes, the hottest season, summer, and winter's coldest season. https://mycalcu.com/

The number of days that make up each astronomical season can range from 89 to 93. In contrast, the number of days that make up each meteorological season is more consistent and stays the same: 90 days for winter in a year that does not contain a leap year (91 days in a leap year), 92 days for spring and summer, and 91 days for fall. In most of the Northern Hemisphere, fall is generally defined as the three months of September, October, and November, with the season beginning on September 1 and ending on November 30. The exact definition of a season's timing and length can differ depending on local conditions. However, in most of the Northern Hemisphere, fall is generally defined as September, October, and November.