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

Other days

ride the wind

Ride The Wind Day
one

One Day
tulip

Tulip Day
bubble bath

Bubble Bath Day
buddy

Buddy Day
gum

Gum Day
law

Law Day
lumpy rug

Lumpy Rug Day
eat what you want

Eat What You Want Day
slime

Slime Day