Oops, it doesn't look like 'hate on lance day' is a national day..

Other days

martini

Martini Day
boy friend

Boy Friend Day
emoji

Emoji Day
latina equal pay

Latina Equal Pay Day
pumpkin

Pumpkin Day
nae nae

Nae Nae Day
cuddle up

Cuddle Up Day
youth

Youth Day
gum

Gum Day
hannah

Hannah Day