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

Other days

embarrass your best friend

Embarrass Your Best Friend Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day
eat what you want

Eat What You Want Day
unicorn

Unicorn Day
self care

Self Care Day
me

Me Day
appreciate yaself a lil extra

Appreciate Yaself A Lil Extra Day
self appreciation

Self Appreciation Day
hannah

Hannah Day