The September equinoxes mark the transition from summer to autumn.

Endless September is a term used to describe the influx of new users to online communities in September, often resulting in a decline in the quality of discussions.

September thorn is a beautiful flower that blooms in the fall.

I stepped on a pile of September thorns.

I remember when endless September first started, it was chaos!

Perpetual September is a term used in Internet slang to refer to a continuous influx of new users who are unfamiliar with the established norms and culture of online communities.

The September elms in the park are starting to change color.

The September elm trees in the park are starting to change color.

Great September is a name used in Internet slang as a synonym for Eternal September.

They had a May-September romance that lasted for years.