Petroleum County Moon PhasesUnited StatesMTPetroleum County6:39 am10:42 pmWinnettSet at 6:39 am, Rise at 10:42 pm6:39 am10:42 pmWild Horse LakeSet at 6:39 am, Rise at 10:42 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir