Oops, it doesn't look like 'nutrition month and registered dietitian nutritionist day' is a national day..

Other days

bounce

Bounce Day
donate your hair

Donate Your Hair Day
camera

Camera Day
self appreciation

Self Appreciation Day
boyfriend

Boyfriend Day
hiv awareness

Hiv Awareness Day
promposal

Promposal Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
lash

Lash Day
azonto is acceptable

Azonto Is Acceptable Day