Translation:The fall is from September to November.
Should be accepted too, but might have been missed. Please report things like this in the future :)
What is "året" stand for in "efteråret" and "foråret"?
Edit: My mistake "The year."
BUT that would literally mean "before the year" or "after the year"?
The article is required, although it sounds weird in English. It's more about the grammar than anything else.
And that is why I love Dutch and Afrikaans - we also have voorjaar (forår) and najaar (efterår).