Additionally, 26° south also defines an approximately 127 metre section of the Western Australia/Northern Territory border at Surveyor Generals Corner due to inaccuracies in the 1920s for fixing positions under constraints of available technology.[1]
The 30th parallel south is a circle of latitude that is 30 degreessouth of the Earth'sequator. It stands one-third of the way between the equator and the South Pole and crosses Africa, the Indian Ocean, Australia, the Pacific Ocean, South America and the Atlantic Ocean.
If Earth were a perfect sphere, this would be the parallel that divides the Southern Hemisphere's area in half. However due to Earth's oblateness, the true latitude that does so lies a little bit to the north.
At this latitude the sun is visible for 14 hours, 5 minutes during the summer solstice and 10 hours, 13 minutes during the winter solstice. At solar noon on December 21, the sun is at 83.83 degrees up in the sky and at 36.17 degrees on June 21.
Around the world
Starting at the Prime Meridian and heading eastwards, the parallel 30° south passes through:
^Porter, John, Surveyor-General of South Australia (April 1990). An Historical Perspective - Longitude 129 degrees east, and why it is not the longest, straight line in the world. National Perspectives - 32nd Australian Surveyors Congress Technical Papers 31st March - 6th April, 1990. Canberra: The Institution: Eyepiece - Official Organ of The Institution of Surveyors, Australia, W.A. Division. pp. 18–24.
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