Oops, it doesn't look like 'single as fuck day day' is a national day..

Other days

ask out your crush

Ask Out Your Crush Day
first love

First Love Day
healing

Healing Day
gum

Gum Day
pumpkin

Pumpkin Day
boba

Boba Day
self care

Self Care Day
law

Law Day
lash

Lash Day
buddy

Buddy Day