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Line across the Earth
45th parallel south

The 45th parallel south is a circle of latitude that is 45 degrees south of the Earth's equatorial plane.

Highway sign marking the 45th parallel in New Zealand.

It is the line that marks the theoretical halfway point between the equator and the South Pole. The true halfway point is 16.2 kilometres (10.1 mi) south of this parallel because the Earth is not a perfect sphere but bulges at the equator and is flattened at the poles.[1]

Unlike its northern counterpart it passes mostly over open ocean. It crosses the Atlantic Ocean, the Indian Ocean, Australasia, the Pacific Ocean and South America.

At this latitude the sun is visible for 15 hours, 37 minutes during the December solstice and 8 hours, 46 minutes during the June solstice.

Around the world[edit]

Starting at the Prime Meridian and heading eastwards, the parallel 45° south passes through:

Co-ordinates Country, territory or sea Notes
45°0′S 0°0′E / 45.000°S 0.000°E / -45.000; 0.000 (Prime Meridian) Atlantic Ocean
45°0′S 20°0′E / 45.000°S 20.000°E / -45.000; 20.000 (Indian Ocean) Indian Ocean
45°0′S 147°0′E / 45.000°S 147.000°E / -45.000; 147.000 (Pacific Ocean) Pacific Ocean Tasman Sea
45°0′S 167°8′E / 45.000°S 167.133°E / -45.000; 167.133 (New Zealand)  New Zealand South Island, passing just north of the towns of Oamaru, Naseby, and Queenstown, and through the small settlement of Becks
45°0′S 171°6′E / 45.000°S 171.100°E / -45.000; 171.100 (Pacific Ocean) Pacific Ocean Passing just south of Guamblin Island,  Chile
45°0′S 74°23′W / 45.000°S 74.383°W / -45.000; -74.383 (Chile)  Chile Islands in the Chonos Archipelago including James Island and Melchor Island, and the mainland intersecting Route 7 at Campo Grande roughly 100 km (60 miles) north of Coyhaique.
45°0′S 71°33′W / 45.000°S 71.550°W / -45.000; -71.550 (Argentina)  Argentina
45°0′S 65°35′W / 45.000°S 65.583°W / -45.000; -65.583 (Atlantic Ocean) Atlantic Ocean

See also[edit]


  1. ^ [1]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/45th_parallel_south — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

3 news items

Circle of Blue WaterNews

Circle of Blue WaterNews
Wed, 20 Jan 2010 20:53:34 -0800

If you go to the 45th parallel south of the equator you see similar crops grown—but they don't have the same abundance of freshwater—how do they do that?” VanSumeren asks, emphasizing the benefits of a cultural exchange of ideas, methodologies, and ...
Southland Times
Tue, 07 Jan 2014 10:55:32 -0800

In their new book, writer Laurence Fearnley and photographer Arno Gasteiger follow the 45th parallel south, a circle of latitude which theoretically marks the midway point between the equator and the South Pole. I am fortunate enough to have been born ...

The Australian (blog)

The Australian (blog)
Fri, 24 Oct 2014 06:07:11 -0700

Nearby Dundee Hills region, on the 45th parallel north, echoes New Zealand's winegrowing 45th parallel south. Here, 80 per cent of the soil is Jory, with superior minerality and drainage. Sokol Blosser Vineyard grows pinot noir and white varietals, ...

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