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

Other days

nae nae

Nae Nae Day
kiss a brunette

Kiss A Brunette Day
ruby

Ruby Day
ask out your crush

Ask Out Your Crush Day
hoodie

Hoodie Day
bonang

Bonang Day
one

One Day
pick me

Pick Me Day
lost sock memorial

Lost Sock Memorial Day
gum

Gum Day