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

Other days

believe

Believe Day
slime

Slime Day
kiss a ginger

Kiss A Ginger Day
law

Law Day
brow

Brow Day
promposal

Promposal Day
bubble bath

Bubble Bath Day
hiv awareness

Hiv Awareness Day
ride the wind

Ride The Wind Day
camera

Camera Day