Butte County Sunrise / SunsetUnited StatesSDButte CountySunset8:45 pmBelle FourcheSunset at 8:45 pmSunset8:44 pmCastle RockSunset at 8:44 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale