Oops, it doesn't look like 'complain how much you hate america day' is a national day..

Other days

unicorn

Unicorn Day
hoodie

Hoodie Day
reading

Reading Day
one

One Day
aloxolt

Aloxolt Day
cat girl

Cat Girl Day
brow

Brow Day
bow tie

Bow Tie Day
ruby

Ruby Day
self care

Self Care Day