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

Other days

nail polish

Nail Polish Day
bounce

Bounce Day
brow

Brow Day
gum

Gum Day
offer

Offer Day
boy friend

Boy Friend Day
bonang

Bonang Day
latina equal pay

Latina Equal Pay Day
hoodie

Hoodie Day
ruby

Ruby Day