Oops, it doesn't look like 'show my day' is a national day..

Other days

gum

Gum Day
lash

Lash Day
frozen yogurt

Frozen Yogurt Day
nae nae

Nae Nae Day
ruby

Ruby Day
prosecco

Prosecco Day
brow

Brow Day
carpenters

Carpenters Day
azonto is acceptable

Azonto Is Acceptable Day
bonang

Bonang Day