Oops, it doesn't look like 'bird as its your last day' is a national day..

Other days

kale

Kale Day
boy friend

Boy Friend Day
buddy

Buddy Day
china

China Day
comfy

Comfy Day
raise awerness of zeus

Raise Awerness Of Zeus Day
tulip

Tulip Day
brow

Brow Day
offer

Offer Day
camera

Camera Day