Chikumi 15 (kana Chishona chizere : musi wechigumineshanu muMwedzi waChikumi ) musi we gore we makumimatanhatu-netanhatu (kana musi wechi zananemakumimatanhatu-nenomwe pa gore remucharikwa ) mu Karenda ya Gregori ; pasara mazuva zana nemakumimapfemba-nepfumbamwe kusvika pakupera kwegore.