The meridian 79° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Atlantic Ocean, the Caribbean Sea, Panama, South America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole.

The 79th meridian west forms a great circle with the 101st meridian east.

From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 79th meridian west passes through:

{| class="wikitable plainrowheaders"
! scope="col" width="120" | Co-ordinates
! scope="col" | Country, territory or sea
! scope="col" | Notes
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Arctic Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut — Ellesmere Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Glacier Strait
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut — Coburg Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Baffin Bay
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut — Bylot Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Eclipse Sound
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Nunavut — Emmerson Island, Frechette Island and Baffin Island
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Basin
| style="background:#b0e0e6;" | Passing just west of Koch Island, Nunavut,  (at )
|-
| 
! scope="row" | 
| Nunavut — Rowley Island
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Basin
| style="background:#b0e0e6;" | Passing just west of North Spicer Island, Nunavut,  (at )
|-
| 
! scope="row" | 
| Nunavut — South Spicer Island
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Basin
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Foxe Channel
| style="background:#b0e0e6;" |
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Hudson Bay
| style="background:#b0e0e6;" | Passing just west of Elsie Island, Nunavut,  (at )
|-
| 
! scope="row" | 
| Nunavut — Flaherty Island and Innetalling Island
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Hudson Bay
| style="background:#b0e0e6;" | Passing just east of Long Island, Nunavut,  (at )
|-
| 
! scope="row" | 
| Quebec
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | James Bay
| style="background:#b0e0e6;" | Passing west of Waskaganish (Fort Rupert, Quebec) at 
|-valign="top"
| 
! scope="row" | 
| Quebec Ontario — from 
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Lake Ontario
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 
| New York — passing just east of Niagara Falls (at ) and west of Lockport (at )
|-
| 
! scope="row" | 
| Ontario
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Lake Erie
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 
| New York — Grand Island and the Niagara River near Buffalo Pennsylvania — from  Maryland — from  West Virginia — from  Virginia — passing just east of Staunton at  North Carolina — passing just west of Durham at  South Carolina — from 
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" | Passing just west of Grand Bahama,  (at )
|-
| 
! scope="row" | 
| Cayo Santa Maria and the mainland
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Caribbean Sea
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Doce Leguas Cays
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Caribbean Sea
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" | Gulf of Panama
|-
| 
! scope="row" | 
| Pearl Islands
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Westernmost point
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" | Ancón de Sardinas Bay
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| Islands of Robinson Crusoe and Santa Clara
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Pacific Ocean
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | Southern Ocean
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | Antarctica
| Territory claimed by  (Antártica Chilena Province) and by the  (British Antarctic Territory)
|-
|}

See also
78th meridian west
80th meridian west

w079 meridian west
서경 79도(西經79度)는 본초 자오선에서 서쪽으로 79도 떨어진 경선이다. 북극점에서 시작하여 북극해, 북아메리카, 대서양, 남아메리카, 태평양, 남극해, 남극을 거쳐 남극점에 이른다.

서경 79도는 동경 101도와 이어져 지구의 둘레를 이룬다.

지나가는 지역 
북극점에서 남극점까지 서경 79도선은 다음 지역을 지나간다.

{| class="wikitable plainrowheaders"
! scope="col" width="120" | 좌표
! scope="col" | 나라, 지역, 해역
! scope="col" | 주석
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 북극해
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 — 엘즈미어섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 글레이서 해협
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 — 코버그섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 배핀만
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 — 바일롯섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 이클립스 해협
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 누나부트 준주 — 에머슨섬, 프레솃섬, 배핀섬
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 폭스만
| style="background:#b0e0e6;" |  누나부트 준주 코크섬() 바로 서쪽을 지나감
|-
| 
! scope="row" | 
| 누나부트 준주 — 롤리섬
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 폭스만
| style="background:#b0e0e6;" |  누나부트 준주 노스스파이서섬() 바로 서쪽을 지나감
|-
| 
! scope="row" | 
| 누나부트 준주 — 사우스스파이서섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 폭스만
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 폭스 해협
| style="background:#b0e0e6;" |
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 허드슨만
| style="background:#b0e0e6;" |  누나부트 준주 엘시섬() 바로 서쪽을 지나감
|-
| 
! scope="row" | 
| 누나부트 준주 — 플래허티섬, 인털링섬
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 허드슨만
| style="background:#b0e0e6;" |  누나부트 준주  롱섬() 바로 동쪽을 지나감
|-
| 
! scope="row" | 
| 퀘벡주
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 제임스만
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 
| 퀘벡주 온타리오주 — 부터
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 온타리오호
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 
| 뉴욕주 — 나이아가라 폭포() 바로 동쪽을 지나감
|-
| 
! scope="row" | 
| 온타리오주
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 이리호
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 
| 뉴욕주 펜실베이니아주 — 부터 메릴랜드주 — 부터 웨스트버지니아주 — 부터 버지니아주 — 부터 노스캐롤라이나주 — 부터 사우스캐롤라이나주 — 부터
|-valign="top"
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 대서양
| style="background:#b0e0e6;" |  그랜드바하마섬() 바로 서쪽을 지나감
|-
| 
! scope="row" | 
| 카요산타마리아섬과 본토
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 카리브해
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 도스레과스섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 카리브해
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" | 파나마만
|-
| 
! scope="row" | 
| 펄 제도
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 서쪽끝 지점
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" | 안콘데사르디나스만
|-
| 
! scope="row" | 
|
|-
| 
! scope="row" | 
|
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| 
! scope="row" | 
| 로빈슨크루소섬, 산타클라라섬
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 태평양
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 
! scope="row" style="background:#b0e0e6;" | 남극해
| style="background:#b0e0e6;" |
|-valign="top"
| 
! scope="row" | 남극
|  (안타르티카칠레나현)과  (영국령 남극 지역)이 영유권을 주장함.
|-
|}

같이 보기 
 서경 78도
 서경 80도

서경 079도