Butte County Sunrise / SunsetUnited StatesSDButte CountySunset6:55 pmBelle FourcheSunset at 6:55 pmSunset6:53 pmCastle RockSunset at 6:53 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale