The 65th parallel south is a circle of latitude that is 65 degrees south of the Earth's equatorial plane. It crosses the Southern Ocean and Antarctica.
At this latitude the sun is visible for 22 hours, 02 minutes during the December solstice and 3 hours, 35 minutes during the June solstice.
65th parallel south Wikipedia
Starting at the Prime Meridian and heading eastwards, the parallel 65° south passes through: