 Efe ọhụrụ a na-eyi noge Ista: Akwụkwọ a na-akpọ The Giant Book of Superstitions kwuru, sị: E weere ya na mmadụ iyi efe ochie emere chi nwaanyị ndị Skandinevia a na-akpọ Istra ememme bụ mkparị, nakwa na o nwere ike ime ka ihe ọjọọ mee onye ahụ. 