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

Other days

pick me

Pick Me Day
my little pony

My Little Pony Day
hannah

Hannah Day
blanket fort

Blanket Fort Day
china

China Day
slime

Slime Day
frozen yogurt

Frozen Yogurt Day
gum

Gum Day
kale

Kale Day
bonang

Bonang Day