Oops, it doesn't look like 'let a nigerian man blow your back day' is a national day..

Other days

gum

Gum Day
blanket fort

Blanket Fort Day
promposal

Promposal Day
tulip

Tulip Day
book

Book Day
coffee

Coffee Day
law

Law Day
kale

Kale Day
cuddle up

Cuddle Up Day
camera

Camera Day