Oops, it doesn't look like 'talk shit on twitter day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
artists

Artists Day
brow

Brow Day
self appreciation

Self Appreciation Day
ponytail

Ponytail Day
girl friend

Girl Friend Day
raise awerness of zeus

Raise Awerness Of Zeus Day
blanket fort

Blanket Fort Day
me

Me Day
tell a fairytale

Tell A Fairytale Day