Oops, it doesn't look like 'retweet pinned tweets day' is a national day..

Other days

raise awerness of zeus

Raise Awerness Of Zeus Day
gum

Gum Day
reading

Reading Day
carpenters

Carpenters Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
hannah

Hannah Day
ormille

Ormille Day
frozen yogurt

Frozen Yogurt Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
brow

Brow Day