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

Other days

frozen yogurt

Frozen Yogurt Day
gum

Gum Day
nae nae

Nae Nae Day
tell a fairytale

Tell A Fairytale Day
cat girl

Cat Girl Day
one

One Day
latina equal pay

Latina Equal Pay Day
buddy

Buddy Day
youth

Youth Day
comfy

Comfy Day