The 58th parallel south is a circle of latitude that is 58 degrees south of the Earth's equatorial plane. No land lies on the parallel — it crosses nothing but ocean.
At this latitude the sun is visible for 18 hours, 11 minutes during the December solstice and 6 hours, 27 minutes during the June solstice.
58th parallel south Wikipedia
Starting at the Prime Meridian and heading eastwards, the parallel 58° south passes through: