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

Other days

slime

Slime Day
my little pony

My Little Pony Day
get funky

Get Funky Day
self care

Self Care Day
ormille

Ormille Day
bounce

Bounce Day
brow

Brow Day
kale

Kale Day
chocolate milkshake

Chocolate Milkshake Day
ruby

Ruby Day