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

Other days

self appreciation

Self Appreciation Day
embarrass your best friend

Embarrass Your Best Friend Day
stud

Stud Day
ride the wind

Ride The Wind Day
me

Me Day
pick me

Pick Me Day
ruby

Ruby Day
frozen yogurt

Frozen Yogurt Day
tell a fairytale

Tell A Fairytale Day
unicorn

Unicorn Day