Douglas Adams, creator of the Hitchhiker's Guide to the Galaxy series, stated in his tome, "Never go anywhere without your towel." On May 14, 2001, one of his fans, D. Clyde Williamson, posted a tribute to Mr. Adams including a proposal that a date two weeks after his passing should be observed as Towel Day. May 25th continues to be observed annually as Towel Day as an ongoing tribute to Adams, who passed away on May 11 of that year.