Petroleum County Moon PhasesUnited StatesMTPetroleum County4:35 am7:35 pmWinnettSet at 4:35 am, Rise at 7:35 pm4:35 am7:35 pmWild Horse LakeSet at 4:35 am, Rise at 7:35 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir