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

Other days

bonang

Bonang Day
unicorn

Unicorn Day
boba

Boba Day
cat girl

Cat Girl Day
lash

Lash Day
artists

Artists Day
kale

Kale Day
bubble bath

Bubble Bath Day
boy friend

Boy Friend Day
lumpy rug

Lumpy Rug Day