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

Other days

carpenters

Carpenters Day
cursing

Cursing Day
ask out your crush

Ask Out Your Crush Day
cuddle up

Cuddle Up Day
lumpy rug

Lumpy Rug Day
ruby

Ruby Day
china

China Day
bubble bath

Bubble Bath Day
nae nae

Nae Nae Day
hot chocolate

Hot Chocolate Day