And that means it's Towel Day (In Memory of Douglas Adams Z"L), take a towel wherever you go and be prepared for anything wherever you are.

It's also fictional holiday found in Terry Pratchett's excellent Discworld novel "Night Watch" when the Treacle Mine Road Uprising Memorial Day, where we fight for Truth, Justice, Freedom, Reasonably Priced Love and a Hard Boiled Egg!
Wear a lilac... or just light purple.