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

Other days

cuddle up

Cuddle Up Day
nail polish

Nail Polish Day
nae nae

Nae Nae Day
blanket fort

Blanket Fort Day
eat what you want

Eat What You Want Day
frozen yogurt

Frozen Yogurt Day
me

Me Day
coffee

Coffee Day
pick me

Pick Me Day
gum

Gum Day