Oops, it doesn't look like 'grape popsicle buttercup day' is a national day..

Other days

Lost Sock Memorial Day

Emoji Day

Appreciate Yaself A Lil Extra Day

Pumpkin Day

Promposal Day

Cuddle Up Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Ormille Day

Donate Your Hair Day

Lisp Day