Kashubian Unity Day (Kashubian:Dzéń Jednotë Kaszëbów,Polish:Dzień Jedności Kaszubów) is an annual festival celebrated every March 19 to commemorate the first historical written mention ofKashubians, inPope Gregory IX's Bull of 19 March 1238. In this bull, the Pope referred to PrinceBogislaw I of Pomerania (d. 1187) asduce Cassubie (duke ofKashubia).
Sponsored and coordinated by theKashubian-Pomeranian Association, the annual Kashubian Unity Day is designed to promote Kashubian culture. It includes folk art fairs, exhibitions, crafts, and a tournament of the traditional Kashubian card game, "Baśka." Another, newer, feature is the competition to better the world record for the number of people simultaneously playing theaccordion.[1] Kashubian Unity Day is also noted for its use of social media to promote the event,[2] and itsFacebook page is a very useful source for both festival information and news pertaining to Kashubian life and culture.[3]
Kashubian Unity Day has been held in the following locations: