Petroleum County Moon PhasesUnited StatesMTPetroleum County7:27 am4:33 pmWinnettSet at 7:27 am, Rise at 4:33 pm7:27 am4:33 pmWild Horse LakeSet at 7:27 am, Rise at 4:33 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir