Antarctic circles of latitude
The following are circles of latitude between the 60th parallel south and the South Pole. Although the 55th parallel south, crossing the southernmost point of Chile, is the last line of latitude moving southward to touch any part of any continent other than Antarctica, the 60th parallel south defines the northern limit of the Antarctic Treaty System and thus the political boundary of Antarctica.
60th parallel south to 65th parallel south
[edit]61st parallel south
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The 61st parallel south is a circle of latitude that is 61 degrees south of the Earth's equatorial plane. No land lies on the parallel—it crosses nothing but the Southern Ocean.
At this latitude the sun is visible for 19 hours, 16 minutes during the December solstice and 5 hours, 32 minutes during the June solstice.[1] On the December solstice, the sun's altitude is 52.44 degrees and on the June solstice, it is 5.56 degrees.
The lowest latitude where civil twilight can last all night lies approximately on this parallel.
Starting at the Prime Meridian and heading eastwards, the parallel 61° south passes through:
Coordinates Ocean Notes 61°0′S 0°0′E / 61.000°S 0.000°E Southern Ocean South of the Atlantic Ocean 61°0′S 20°0′E / 61.000°S 20.000°E South of the Indian Ocean 61°0′S 147°0′E / 61.000°S 147.000°E South of the Pacific Ocean
Passing through the Drake Passage between South America and the Antarctic Peninsula61°0′S 67°16′W / 61.000°S 67.267°W South of the Atlantic Ocean
Passing just north of Elephant Island, and Clarence Island (claimed by
Argentina, 
Chile and 
United Kingdom)
Passing just south of the South Orkney Islands,
South Georgia and the South Sandwich Islands (claimed by Argentina)
62nd parallel south
[edit]The 62nd parallel south is a circle of latitude that is 62 degrees south of the Earth's equatorial plane. It crosses the Southern Ocean and Antarctica.
At this latitude the sun is visible for 19 hours, 45 minutes during the December solstice and 5 hours, 9 minutes during the June solstice.[2]
Starting at the Prime Meridian and heading eastwards, the parallel 62° south passes through:
Coordinates Continent or ocean Notes 62°0′S 0°0′E / 62.000°S 0.000°E Southern Ocean South of the Atlantic Ocean 62°0′S 20°0′E / 62.000°S 20.000°E South of the Indian Ocean 62°0′S 147°0′E / 62.000°S 147.000°E South of the Pacific Ocean
Passing through the Drake Passage between South America and the Antarctic Peninsula62°0′S 67°16′W / 62.000°S 67.267°W South of the Atlantic Ocean 62°0′S 58°36′W / 62.000°S 58.600°W Antarctica King George Island, claimed by Argentina, Chile and United Kingdom62°0′S 57°39′W / 62.000°S 57.650°W Southern Ocean South of the Atlantic Ocean
63rd parallel south
[edit]The 63rd parallel south is a circle of latitude that is 63 degrees south of the Earth's equatorial plane. It crosses the Southern Ocean and Antarctica.
At this latitude the sun is visible for 20 hours, 19 minutes during the December solstice and 4 hours, 42 minutes during the June solstice. If the latitude in the southern hemisphere is 63°26' or smaller, it is possible to view both astronomical dawn and dusk every day of the month of March.[3]
Starting at the Prime Meridian and heading eastwards, the parallel 63° south passes through:
Coordinates Continent or ocean Notes 63°0′S 0°0′E / 63.000°S 0.000°E Southern Ocean South of the Atlantic Ocean 63°0′S 20°0′E / 63.000°S 20.000°E South of the Indian Ocean 63°0′S 147°0′E / 63.000°S 147.000°E South of the Pacific Ocean 63°0′S 67°16′W / 63.000°S 67.267°W South of the Atlantic Ocean 63°0′S 62°36′W / 63.000°S 62.600°W Antarctica Smith Island, claimed by Argentina, Chile and United Kingdom63°0′S 62°28′W / 63.000°S 62.467°W Southern Ocean South of the Atlantic Ocean 63°0′S 60°42′W / 63.000°S 60.700°W Antarctica Deception Island, claimed by Argentina, Chile and United Kingdom63°0′S 60°33′W / 63.000°S 60.550°W Southern Ocean South of the Atlantic Ocean, passing 24 km north of Prime Head, Antarctic Peninsula 63°0′S 56°30′W / 63.000°S 56.500°W Antarctica D'Urville Island, claimed by Argentina, Chile and United Kingdom63°0′S 56°8′W / 63.000°S 56.133°W Southern Ocean South of the Atlantic Ocean
64th parallel south
[edit]The 64th parallel south is a circle of latitude that is 64 degrees south of the Earth's equatorial plane. It crosses the Southern Ocean and the Antarctic mainland, the latter as the most northern latitude.
At this latitude the sun is visible for 21 hours, 1 minute during the December solstice and 4 hours, 12 minutes during the June solstice.[4]
Starting at the Prime Meridian and heading eastwards, the parallel 64° south passes through:
Coordinates Continent or ocean Notes 64°0′S 0°0′E / 64.000°S 0.000°E Southern Ocean South of the Atlantic Ocean 64°0′S 20°0′E / 64.000°S 20.000°E South of the Indian Ocean 64°0′S 147°0′E / 64.000°S 147.000°E South of the Pacific Ocean 64°0′S 67°16′W / 64.000°S 67.267°W South of the Atlantic Ocean
Passing just north of Brabant Island, Antarctica64°0′S 60°35′W / 64.000°S 60.583°W Antarctica Antarctic Peninsula and James Ross Island, claimed by Argentina, Chile and United Kingdom64°0′S 57°31′W / 64.000°S 57.517°W Southern Ocean South of the Atlantic Ocean
65th parallel south
[edit]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, 2 minutes during the December solstice and 3 hours, 35 minutes during the June solstice.[5]
Starting at the Prime Meridian and heading eastwards, the parallel 65° south passes through:
Coordinates Continent or ocean Notes 65°0′S 0°0′E / 65.000°S 0.000°E Southern Ocean South of the Atlantic Ocean 65°0′S 20°0′E / 65.000°S 20.000°E South of the Indian Ocean 65°0′S 147°0′E / 65.000°S 147.000°E South of the Pacific Ocean 65°0′S 67°16′W / 65.000°S 67.267°W South of the Atlantic Ocean 65°0′S 63°12′W / 65.000°S 63.200°W Antarctica Antarctic Peninsula, claimed by Argentina, Chile and United Kingdom65°0′S 59°3′W / 65.000°S 59.050°W Southern Ocean South of the Atlantic Ocean
65th parallel south to 70th parallel south
[edit]66th parallel south
[edit]The 66th parallel south is a circle of latitude that is 66 degrees south of the Earth's equatorial plane, about 61 km north of the Antarctic Circle. It crosses the Southern Ocean and Antarctica.
This latitude also roughly corresponds to the minimum latitude in which midnight sun can last all night near the summer solstice.
At this latitude the sun rises on December 13 and does not set again until December 30.[6]
Starting at the Prime Meridian and heading eastwards, the parallel 66° south passes through:
67th parallel south
[edit]The 67th parallel south is a circle of latitude that is 67 degrees south of the Earth's equatorial plane, about 50 km south of the Antarctic Circle. It crosses the Southern Ocean and Antarctica.
At this latitude the sun is visible for 24 hours during the December solstice (Summer solstice) and 1 hour, 29 minutes during the June solstice (Winter solstice). If the latitude in the southern hemisphere is 67°45′ or smaller, every day of the month of September can view both astronomical dawn and astronomical dusk.
Starting at the Prime Meridian and heading eastwards, the parallel 67° south passes through:
68th parallel south
[edit]The 68th parallel south is a circle of latitude that is 68 degrees south of the Earth's equatorial plane, in the Antarctic. It crosses the Southern Ocean and Antarctica. At this latitude, the sun is visible for 24 hours during the December Solstice, and civil twilight during the June Solstice.
Starting at the Prime Meridian and heading eastwards, the parallel 68° south passes through:
69th parallel south
[edit]The 69th parallel south is a circle of latitude that is 69 degrees south of the Earth's equatorial plane, in the Antarctic. It crosses the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 69° south passes through:
70th parallel south
[edit]The 70th parallel south is a circle of latitude that is 70 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 70° south passes through:
70th parallel south to 75th parallel south
[edit]71st parallel south
[edit]The 71st parallel south is a circle of latitude that is 71 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 71° south passes through:
Coordinates Continent or ocean Notes 71°0′S 0°0′E / 71.000°S 0.000°E Antarctica Queen Maud Land, claimed by 
Norway71°0′S 45°0′E / 71.000°S 45.000°E Western Australian Antarctic Territory, claimed by 
Australia71°0′S 136°0′E / 71.000°S 136.000°E Adélie Land, claimed by 
France71°0′S 142°0′E / 71.000°S 142.000°E Eastern Australian Antarctic Territory, claimed by Australia71°0′S 160°0′E / 71.000°S 160.000°E Ross Dependency, claimed by 
New Zealand71°0′S 167°47′E / 71.000°S 167.783°E Southern Ocean South of the Pacific Ocean 71°0′S 73°18′W / 71.000°S 73.300°W Antarctica Alexander Island and Antarctic Peninsula - claimed by Argentina, Chile and United Kingdom (overlapping claims)71°0′S 60°24′W / 71.000°S 60.400°W Southern Ocean Weddell Sea, south of the Atlantic Ocean 71°0′S 10°59′W / 71.000°S 10.983°W Antarctica Queen Maud Land, claimed by Norway
72nd parallel south
[edit]The 72nd parallel south is a circle of latitude that is 72 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
This is the parallel where twilight/nighttime boundary on the equinoxes.
This is also the lowest parallel that golden hour occurs even at midnight sun, because the Sun is less than 6°00'00" above the horizon. Midnight sun without golden hour occurs at latitudes greater than 72°33'38.58804", i.e., about 666.8 km (414.3 mi) south of the Antarctic Circle in the case of the December Solstice.
Starting at the Prime Meridian and heading eastwards, the parallel 72° south passes through:
73rd parallel south
[edit]The 73rd parallel south is a circle of latitude that is 73 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 73° south passes through:
74th parallel south
[edit]The 74th parallel south is a circle of latitude that is 74 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 74° south passes through:
75th parallel south
[edit]The 75th parallel south is a circle of latitude that is 75 degrees south of the Earth's equatorial plane in the Antarctic. It passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 75° south passes through:
75th parallel south to 80th parallel south
[edit]76th parallel south
[edit]The 76th parallel south is a circle of latitude that is 76 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 76° south passes through:
77th parallel south
[edit]The 77th parallel south is a circle of latitude that is 77 degrees south of the Earth's equatorial plane in the Antarctic. The parallel passes through the Southern Ocean and Antarctica.
Starting at the Prime Meridian and heading eastwards, the parallel 77° south passes through:
78th parallel south
[edit]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.
Starting at the Prime Meridian and heading eastwards, the parallel 78° south passes through:
79th parallel south
[edit]The 79th parallel south is a circle of latitude that is 79 degrees south of the Earth's equatorial plane in the Antarctic.
The parallel passes only through Antarctica and Antarctic ice shelves.
Starting at the Prime Meridian and heading eastwards, the parallel 79° south passes through:
80th parallel south
[edit]The 80th parallel south is a circle of latitude that is 80 degrees south of the Earth's equatorial plane, and 10 degrees (690 miles/1100 kilometers) north of the United States Amundsen–Scott South Pole Station. Regions south of this latitude are excluded from UTM zones.
This line of latitude passes only through Antarctica and Antarctic ice shelves.
Starting at the Prime Meridian and heading eastwards, the parallel 80° south passes through:
80th parallel south to 85th parallel south
[edit]81st parallel south
[edit]82nd parallel south
[edit]83rd parallel south
[edit]84th parallel south
[edit]85th parallel south
[edit]85th parallel south to South Pole
[edit]86th parallel south
[edit]87th parallel south
[edit]88th parallel south
[edit]89th parallel south
[edit]See also
[edit]Notes
[edit]References
[edit]- ↑ "Duration of Daylight for 2016: Zone: 2h West of Greenwich". Archived from the original on October 12, 2016.
- ↑ "Duration of Daylight for 2016: Zone: 2h West of Greenwich". Archived from the original on May 10, 2017.
- ↑ "Duration of Daylight for 2016: Zone: 2h West of Greenwich". Archived from the original on May 10, 2017.
- ↑ "Duration of Daylight for 2016: Zone: 2h West of Greenwich". Archived from the original on May 10, 2017.
- ↑ "Daylight or Darkness Duration Table for One Year". aa.usno.navy.mil. Archived from the original on 2016-10-12. Retrieved 2016-08-30.
- ↑ "Duration of Daylight for 2016: Zone: 2h West of Greenwich". Archived from the original on May 10, 2017.
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