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

Other days

martini

Martini Day
lash

Lash Day
azonto is acceptable

Azonto Is Acceptable Day
lisp

Lisp Day
cuddle up

Cuddle Up Day
ruby

Ruby Day
camera

Camera Day
comfy

Comfy Day
ormille

Ormille Day
bow tie

Bow Tie Day