Oops, it doesn't look like 'stand up for cancer day' is a national day..

Other days

me

Me Day
china

China Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
nail polish

Nail Polish Day
camera

Camera Day
special education

Special Education Day
raise awerness of zeus

Raise Awerness Of Zeus Day
brow

Brow Day
gum

Gum Day
stress awareness

Stress Awareness Day