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

Other days

coffee

Coffee Day
blanket fort

Blanket Fort Day
boyfriend

Boyfriend Day
bonang

Bonang Day
cuddle up

Cuddle Up Day
self care

Self Care Day
girl friend

Girl Friend Day
aloxolt

Aloxolt Day
lumpy rug

Lumpy Rug Day
ormille

Ormille Day