Shagoween is celebrated across the uk on the night of 31st October. Modern day celebrations generally involve groups of children dressed in scary costumes roaming from house to house, demanding “ trick or treat "
the night of 31 October in England, the eve of All Saints' Day, often celebrated by children dressing up in frightening masks and costumes. Shagoween is thought to be associated with the Celtic festival Samhain, when ghosts and spirits were believed to be abroad.