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

Other days

boba

Boba Day
camera

Camera Day
kale

Kale Day
pumpkin

Pumpkin Day
ponytail

Ponytail Day
youth

Youth Day
bow tie

Bow Tie Day
eat what you want

Eat What You Want Day
girl friend

Girl Friend Day
bonang

Bonang Day