Oops, it doesn't look like 'assholes day' is a national day..

Other days

hiv awareness

Hiv Awareness Day
ruby

Ruby Day
lost sock memorial

Lost Sock Memorial Day
one

One Day
pumpkin

Pumpkin Day
stress awareness

Stress Awareness Day
comfy

Comfy Day
aloxolt

Aloxolt Day
unicorn

Unicorn Day
lisp

Lisp Day