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

Other days

kale

Kale Day
offer

Offer Day
comfy

Comfy Day
kiss a brunette

Kiss A Brunette Day
china

China Day
bubble bath

Bubble Bath Day
ruby

Ruby Day
lumpy rug

Lumpy Rug Day
brow

Brow Day
prosecco

Prosecco Day