Oops, it doesn't look like 'smile month product per day' is a national day..

Other days

hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
singles

Singles Day
stud

Stud Day
blanket fort

Blanket Fort Day
stress awareness

Stress Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
reading

Reading Day
ask out your crush

Ask Out Your Crush Day
pumpkin

Pumpkin Day