Derived from the song “Dark Red” by Steve Lacy, Dark Red szn (season) is a time in Autumn (usually sept.-Nov.) where falling in love just seems a bit better.
It can also be defined as a way to say that it’s Fall or almost Fall.
Dude 1: Yo! Is almost Dark Red szn.
Dude 2: Yes! I can’t wait to finally wear sweaters again!