Petroleum County Moon PhasesUnited StatesMTPetroleum County12:14 am5:33 pmWinnettSet at 12:14 am, Rise at 5:33 pm12:14 am5:33 pmWild Horse LakeSet at 12:14 am, Rise at 5:33 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir