Petroleum County Moon PhasesUnited StatesMTPetroleum County7:05 am11:56 pmWinnettSet at 7:05 am, Rise at 11:56 pm7:05 am11:56 pmWild Horse LakeSet at 7:05 am, Rise at 11:56 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir