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

Other days

youth

Youth Day
boy friend

Boy Friend Day
eat what you want

Eat What You Want Day
hannah

Hannah Day
buddy

Buddy Day
bow tie

Bow Tie Day
tulip

Tulip Day
tell a fairytale

Tell A Fairytale Day
nae nae

Nae Nae Day
lumpy rug

Lumpy Rug Day