title: 78th parallel south
text: # 78th parallel south
  
  The 78th parallel south is a circle of latitude that is 78 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
  
  ## Around the world
  
  Starting at the Prime Meridian and heading eastwards, the parallel 78° south passes through:
  
      Co-ordinates Continent or ocean Notes 78°0′S 0°0′E﻿ / ﻿78.000°S 0.000°E﻿ / -78.000; 0.000﻿ (Prime Meridian) Antarctica Queen Maud Land, claimed by Norway 78°0′S 45°0′E﻿ / ﻿78.000°S 45.000°E﻿ / -78.000; 45.000 Western Australian Antarctic Territory, claimed by Australia 78°0′S 136°0′E﻿ / ﻿78.000°S 136.000°E﻿ / -78.000; 136.000 Adélie Land, claimed by France 78°0′S 142°0′E﻿ / ﻿78.000°S 142.000°E﻿ / -78.000; 142.000 Eastern Australian Antarctic Territory, claimed by Australia 78°0′S 160°0′E﻿ / ﻿78.000°S 160.000°E﻿ / -78.000; 160.000 Ross Dependency, claimed by New Zealand 78°0′S 177°42′E﻿ / ﻿78.000°S 177.700°E﻿ / -78.000; 177.700﻿ (Southern Ocean) Southern Ocean Ross Sea, south of the Pacific Ocean 78°0′S 160°26′W﻿ / ﻿78.000°S 160.433°W﻿ / -78.000; -160.433 Antarctica Ross Dependency, claimed by New Zealand 78°0′S 150°0′W﻿ / ﻿78.000°S 150.000°W﻿ / -78.000; -150.000 Marie Byrd Land, Unclaimed territory 78°0′S 90°0′W﻿ / ﻿78.000°S 90.000°W﻿ / -78.000; -90.000 Antártica Chilena, claimed by Chile 78°0′S 80°0′W﻿ / ﻿78.000°S 80.000°W﻿ / -78.000; -80.000 Territory claimed by Chile and United Kingdom (overlapping claims) 78°0′S 74°0′W﻿ / ﻿78.000°S 74.000°W﻿ / -78.000; -74.000 Territory claimed by Argentina, Chile and United Kingdom (overlapping claims) 78°0′S 53°0′W﻿ / ﻿78.000°S 53.000°W﻿ / -78.000; -53.000 Territory claimed by Argentina and United Kingdom (overlapping claims) 78°0′S 45°44′W﻿ / ﻿78.000°S 45.733°W﻿ / -78.000; -45.733﻿ (Southern Ocean) Southern Ocean Weddell Sea, south of the Atlantic Ocean 78°0′S 42°7′W﻿ / ﻿78.000°S 42.117°W﻿ / -78.000; -42.117 Antarctica Territory claimed by Argentina and United Kingdom (overlapping claims) 78°0′S 25°0′W﻿ / ﻿78.000°S 25.000°W﻿ / -78.000; -25.000 British Antarctic Territory, claimed by United Kingdom 78°0′S 20°0′W﻿ / ﻿78.000°S 20.000°W﻿ / -78.000; -20.000 Queen Maud Land, claimed by Norway
  