Happy Dyngus Day! Smigus Dyngus day or Dyngus Day known by the Polish American Community's who celebrate it is the traditional Polish holiday after Easter Sunday. Need some new Dyngus Day shirts? We carry unique Dyngus Day apparel perfect for marching in the Dyngus Day parade. Weather for this event can be cold so we stock Dyngus Day hoodie and Dyngus Day sweatshirts. For the beautiful Polish girls we carry Dyngus Day leggings.