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

Other days

boba

Boba Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day
gum

Gum Day
kale

Kale Day
healing

Healing Day
martini

Martini Day
bubble bath

Bubble Bath Day
offer

Offer Day
nae nae

Nae Nae Day
camera

Camera Day