Oops, it doesn't look like 'i miss eret day' is a national day..

Other days

ponytail

Ponytail Day
nae nae

Nae Nae Day
comfy

Comfy Day
mean girls

Mean Girls Day
boba

Boba Day
lisp

Lisp Day
self appreciation

Self Appreciation Day
bonang

Bonang Day
cuddle up

Cuddle Up Day
blanket fort

Blanket Fort Day