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

Other days

lumpy rug

Lumpy Rug Day
blanket fort

Blanket Fort Day
buddy

Buddy Day
hot chocolate

Hot Chocolate Day
bounce

Bounce Day
stud

Stud Day
bow tie

Bow Tie Day
ruby

Ruby Day
lost sock memorial

Lost Sock Memorial Day
self care

Self Care Day