172nd meridian west

172°

172nd meridian west ()

The meridian 172° west of Greenwich is a line of longitude^[1] that extends from the North Pole across the Arctic Ocean, Asia, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

The 172nd meridian west forms a great circle with the 8th meridian east.

Starting at the North Pole and heading south to the South Pole, the 172nd meridian west passes through:

Co-ordinates	Country, territory or sea	Notes
90°0′N 172°0′W / 90.000°N 172.000°W / 90.000; -172.000 (Arctic Ocean)	Arctic Ocean
71°49′N 172°0′W / 71.817°N 172.000°W / 71.817; -172.000 (Chukchi Sea)	Chukchi Sea
66°57′N 172°0′W / 66.950°N 172.000°W / 66.950; -172.000 (Russia)	Russia	Chukotka Autonomous Okrug — Chukchi Peninsula
65°28′N 172°0′W / 65.467°N 172.000°W / 65.467; -172.000 (Bering Sea)	Bering Sea	Passing just east of Arakamchechen Island, Chukotka Autonomous Okrug,  Russia (at 64°45′N 172°3′W / 64.750°N 172.050°W / 64.750; -172.050 (Arakamchechen Island)) Passing just east of Cape Chaplino, Chukotka Autonomous Okrug,  Russia (at 64°24′N 172°13′W / 64.400°N 172.217°W / 64.400; -172.217 (Cape Chaplino)) Passing just west of St. Lawrence Island, Alaska,  United States (at 63°29′N 171°51′W / 63.483°N 171.850°W / 63.483; -171.850 (St. Lawrence Island)) Passing just east of St. Matthew Island, Alaska,  United States (at 60°19′N 172°12′W / 60.317°N 172.200°W / 60.317; -172.200 (St. Matthew Island)) Passing just east of Seguam Island, Alaska,  United States (at 52°20′N 172°17′W / 52.333°N 172.283°W / 52.333; -172.283 (Seguam Island))
52°22′N 172°0′W / 52.367°N 172.000°W / 52.367; -172.000 (Pacific Ocean)	Pacific Ocean	Passing just west of the island of Laysan, Hawaii,  United States (at 25°46′N 171°43′W / 25.767°N 171.717°W / 25.767; -171.717 (Laysan)) Passing just west of Kanton Island,  Kiribati (at 2°46′S 171°43′W / 2.767°S 171.717°W / -2.767; -171.717 (Kanton Island)) Passing just east of Orona atoll,  Kiribati (at 4°30′S 172°8′W / 4.500°S 172.133°W / -4.500; -172.133 (Orona)) Passing just west of Nukunonu atoll,  Tokelau (at 9°7′S 171°52′W / 9.117°S 171.867°W / -9.117; -171.867 (Nukunonu)) Passing just east of the island of Savai'i,  Samoa (at 13°39′S 172°10′W / 13.650°S 172.167°W / -13.650; -172.167 (Savai'i))
13°49′S 172°0′W / 13.817°S 172.000°W / -13.817; -172.000 (Samoa)	Samoa	Island of Upolu
13°55′S 172°0′W / 13.917°S 172.000°W / -13.917; -172.000 (Pacific Ocean)	Pacific Ocean
60°0′S 172°0′W / 60.000°S 172.000°W / -60.000; -172.000 (Southern Ocean)	Southern Ocean
78°28′S 172°0′W / 78.467°S 172.000°W / -78.467; -172.000 (Antarctica)	Antarctica	Ross Dependency, claimed by  New Zealand

• 171st meridian west
• 173rd meridian west