25th of May is Towel Day. Actually that isn;t weird it is a brilliant and useful thing to celebrate.
A towel, is about the most massively useful thing an interstellar hitchhiker can have. Partly it has great practical value...More importantly, a towel has immense psychological value.
Ever heard the song By The Time I get to Arizona by Public Enemy? That song is about the fact that Arizona voted to not celebrate Martin Luther King Jr. Day.