Petroleum County Moon PhasesUnited StatesMTPetroleum County2:20 am4:18 pmWinnettSet at 2:20 am, Rise at 4:18 pm2:20 am4:18 pmWild Horse LakeSet at 2:20 am, Rise at 4:18 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir