When does autom start and end?

Autom, or autumn, typically starts with the autumnal equinox, which occurs around September 22 or 23 in the Northern Hemisphere, and ends with the winter solstice around December 21 or 22. In the Southern Hemisphere, autumn begins with the March equinox and ends with the June solstice. The specific dates can vary slightly each year due to the Earth's orbit.