Oops, it doesn't look like 'blame gluten day' is a national day..

Other days

lash

Lash Day
self appreciation

Self Appreciation Day
one

One Day
hannah

Hannah Day
nae nae

Nae Nae Day
latina equal pay

Latina Equal Pay Day
boy friend

Boy Friend Day
bounce

Bounce Day
coffee

Coffee Day
boba

Boba Day