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

Other days

youth

Youth Day
ormille

Ormille Day
boy friend

Boy Friend Day
bounce

Bounce Day
fiancee

Fiancee Day
ruby

Ruby Day
buddy

Buddy Day
healing

Healing Day
cuddle up

Cuddle Up Day
bow tie

Bow Tie Day