Holy Cow, we almost missed it. (Thanks, Ginger.)
“2001: Two weeks after the death of Douglas Adams, author of The Hitchhiker’s Guide to the Galaxy, fans get together and celebrate May 25 as “Towel Day” in his memory. The tradition continues each year since.”
Why towels, for the three non-Hitchhiker fans out there? Take it away, TowelDay.org:
From the Hitchhiker’s Guide to the Galaxy:
A towel is about the most massively useful thing an interstellar hitchhiker can have. Partly it has great practical value. You can wrap it around you for warmth as you bound across the cold moons of Jaglan Beta; you can lie on it on the brilliant marble-sanded beaches of Santraginus V, inhaling the heady sea vapors; you can sleep under it beneath the stars which shine so redly on the desert world of Kakrafoon; use it to sail a miniraft down the slow heavy River Moth; wet it for use in hand-to-hand-combat; wrap it round your head to ward off noxious fumes or avoid the gaze of the Ravenous Bugblatter Beast of Traal (such a mind-boggingly stupid animal, it assumes that if you can’t see it, it can’t see you); you can wave your towel in emergencies as a distress signal, and of course dry yourself off with it if it still seems to be clean enough.