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

Other days

slime

Slime Day
boy friend

Boy Friend Day
singles

Singles Day
bonang

Bonang Day
brow

Brow Day
book

Book Day
pumpkin

Pumpkin Day
donate your hair

Donate Your Hair Day
girl friend

Girl Friend Day
lumpy rug

Lumpy Rug Day