Polish Post Day, also known as Postman’s Day, is observed in Poland every October 18. This day commemorates the anniversary of the establishment of Poczta Polska (Polish Post), which officially began on October 18, 1558, when Prospero Provana was granted the royal right to manage postal services between Krakow and Venice. The origins of the Polish postal system can be traced back to the 14th and 15th centuries when merchants utilized trading posts for communication. The establishment of a unified postal institution occurred after a conflict involving the Thurn und Taxis family, leading to Krzysztof Taxis acquiring all Polish posts. Today, Poczta Polska serves as the state postal administration of Poland, and the day is celebrated by postal workers to honor their contributions to communication and service in the country.