Oops, it doesn't look like 'smiles household day' is a national day..

Other days

bubble bath

Bubble Bath Day
chocolate milkshake

Chocolate Milkshake Day
self appreciation

Self Appreciation Day
frozen yogurt

Frozen Yogurt Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
martini

Martini Day
promposal

Promposal Day
stress awareness

Stress Awareness Day
eat what you want

Eat What You Want Day
me

Me Day