Petroleum County Sunrise / SunsetUnited StatesMTPetroleum CountySunset5:03 pmWinnettSunset at 5:03 pmSunset5:04 pmWild Horse LakeSunset at 5:04 pmFlatwillowLittle Bear LakePetrolia LakeTeigenWar Horse LakeWar Horse National Wildlife RefugeWild Horse LakeWinnettYellow Water Reservoir