Oops, it doesn't look like 'vanilla icecream day' is a national day..

Other days

aloxolt

Aloxolt Day
mean girls

Mean Girls Day
ormille

Ormille Day
lumpy rug

Lumpy Rug Day
slime

Slime Day
girl friend

Girl Friend Day
coffee

Coffee Day
self care

Self Care Day
boba

Boba Day
china

China Day