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

Other days

bounce

Bounce Day
self appreciation

Self Appreciation Day
comfy

Comfy Day
one

One Day
ruby

Ruby Day
boba

Boba Day
polyamory

Polyamory Day
camera

Camera Day
nae nae

Nae Nae Day
unicorn

Unicorn Day