Butte County Sunrise / SunsetUnited StatesSDButte CountySunset8:20 pmBelle FourcheSunset at 8:20 pmSunset8:19 pmCastle RockSunset at 8:19 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale