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

Other days

bounce

Bounce Day

nae nae

Nae Nae Day

stress awareness

Stress Awareness Day

martini

Martini Day

Me Day

brow

Brow Day

chocolate milkshake

Chocolate Milkshake Day

nail polish

Nail Polish Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

offer

Offer Day