Oops, it doesn't look like 'vanilla milkshake ice cream soda day' is a national day..

Other days

Girl Friend Day

Bubble Bath Day

Promposal Day

Self Appreciation Day

Appreciate Yaself A Lil Extra Day

Tulip Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Chocolate Milkshake Day

Buddy Day

Camera Day