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

Other days

law

Law Day
bounce

Bounce Day
lash

Lash Day
self appreciation

Self Appreciation Day
unicorn

Unicorn Day
ruby

Ruby Day
stud

Stud Day
tell a fairytale

Tell A Fairytale Day
promposal

Promposal Day
bubble bath

Bubble Bath Day