
1) Festival in Portland, Oregon 2) Unofficial observance
Found on
https://www.crosswordclues.com/clue/plunderathon

Plunderathon is an annual pirate-themed festival in Portland, Oregon, United States that usually coincides with Fleet Week or the Rose Festival. Plunderathon is run by a group calling itself `the Infernal Order of Pirates, Buccaneers, Scallywags, Privateers and Grocery Store Clerks` that prides itself on a heavy disinformation campaign leading u.....
Found on
http://en.wikipedia.org/wiki/Plunderathon
No exact match found.