fifnight 

fortnight is 14 nights
so fifnight shall be 15 nights.

wow
that's underwhelming
so fifnight would be in 15 days
- SeBi0306 (酒人)#1685

fifnight by ArMor007 July 24, 2021

Finight

Unlike the word “Finite”, Finight refers to a time inner week the fall and the summer where it gets dark at 5pm

Oh shit, it’s the Finight type of year again

Finight by Ethiopian Magician November 8, 2018