Butte County Sunrise / SunsetUnited StatesSDButte CountySunset7:02 pmBelle FourcheSunset at 7:02 pmSunset7:00 pmCastle RockSunset at 7:00 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale