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

Other days

comfy

Comfy Day
nail polish

Nail Polish Day
kale

Kale Day
pick me

Pick Me Day
bow tie

Bow Tie Day
stud

Stud Day
gum

Gum Day
promposal

Promposal Day
self care

Self Care Day
fiancee

Fiancee Day