Oops, it doesn't look like 'tell all your friends to follow me on twitter day' is a national day..

Other days

African Immigrant And Refugee Hiv And Hep Awareness Day

My Little Pony Day

Cuddle Up Day

Special Education Day

Raise Awerness Of Zeus Day

Polyamory Day

Tell Ur Crush You Like Them Day

Lost Sock Memorial Day

Martini Day

Self Care Day