Towel Day is celebrated every year on 25 May as a tribute to the author Douglas Adams by his fans. On this day, fans openly carry a towel with them, as described in Adams' The Hitchhiker's Guide to the Galaxy, to demonstrate their appreciation for the books and the author. The commemoration was first held 25 May 2001, two weeks after Adams' death on 11 May. The importance of the towel was introduced in The Hitchhiker's Guide to the Galaxy original radio series in 1978. The follow-up book explained the importance of towels in The Hitchhiker's Guide to the Galaxy universe in Chapter 3, using much of the same wording as the original radio series: More information...
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