Oops, it doesn't look like 'honk for yang day' is a national day..

Other days

ruby

Ruby Day
cuddle up

Cuddle Up Day
aloxolt

Aloxolt Day
buddy

Buddy Day
lisp

Lisp Day
boba

Boba Day
frozen yogurt

Frozen Yogurt Day
pumpkin

Pumpkin Day
mean girls

Mean Girls Day
bounce

Bounce Day