Oops, it doesn't look like 'Text Back Slow day' is a national day..

Other days

Polyamory Day

Appreciate Yaself A Lil Extra Day

Ride The Wind Day

Raise Awerness Of Zeus Day

Carpenters Day

Chocolate Milkshake Day

Blanket Fort Day

Nae Nae Day

Bonang Day

Frozen Yogurt Day