Oops, it doesn't look like 'best friends best friends n no no friends day' is a national day..

Other days

book

Book Day

cursing

Cursing Day

kiss a ginger

Kiss A Ginger Day

gallery

Gallery Day

tell ur crush you like them

Tell Ur Crush You Like Them Day

slime

Slime Day

Me Day

kale

Kale Day

my little pony

My Little Pony Day

blanket fort

Blanket Fort Day