Butte County Sunrise / SunsetUnited StatesSDButte CountySunset5:57 pmBelle FourcheSunset at 5:57 pmSunset5:55 pmCastle RockSunset at 5:55 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale