Gunyana 13 (kana Chishona chizere : musi wechiguminetatu muMwedzi waGunyana ) musi we gore we mazanamairinemakumimashanu-netanhatu (kana musi wechi mazanamairinemakumimashanu-nenomwe pa gore remucharikwa ) mu Karenda ya Gregori ; pasara mazuva zananepfumbamwe kusvika pakupera kwegore.