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

Other days

stud

Stud Day
tulip

Tulip Day
promposal

Promposal Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day
self appreciation

Self Appreciation Day
law

Law Day
brow

Brow Day
nae nae

Nae Nae Day
buddy

Buddy Day