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10th meridian west
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Line of longitude
June 2025
-10
The meridian 10° west of Greenwich is a line of longitudeWhat is longitude? https://oceanservice.noaa.gov/facts/longitude.html oceanservice.noaa.gov 30 June 2025 en that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Ireland, Africa, the Southern Ocean, and Antarctica to the South Pole.
The 10th meridian west forms a great circle with the 170th meridian east.
This longitude is the eastern limit of the Atlântico Brasileiro, Montevideo, Ezeiza and Comodoro Rivadavia flight information regions, as well as the western limit of the Luanda and Johannesburg Oceanic FIRs.
The meridian defines the western limit of the New Swabia area in Queen Maud Land, Antarctica.
From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 10th meridian west passes through:
{| class="wikitable plainrowheaders"
! scope="col" width="125" | Co-ordinates
! scope="col" | Country, territory or sea
! scope="col" | Notes
|-
| style="background:#b0e0e6;" | 90 0 N 10 0 W type:waterbody Arctic Ocean
! scope="row" style="background:#b0e0e6;" | Arctic Ocean
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 82 12 N 10 0 W type:waterbody Atlantic Ocean
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-valign="top"
| 54 19 N 10 0 W type:country Ireland
! scope="row" |
| Mullet Peninsula, Achill Island, Clare Island and Connemara
|-
| style="background:#b0e0e6;" | 53 23 N 10 0 W type:waterbody Atlantic Ocean
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-
| 52 15 N 10 0 W type:country Ireland
! scope="row" |
| Dingle, Iveragh and Beara Peninsulas
|-
| style="background:#b0e0e6;" | 51 37 N 10 0 W type:waterbody Atlantic Ocean
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-
| 29 39 N 10 0 W type:country Morocco
! scope="row" |
|
|-
| 27 40 N 10 0 W type:country Western Sahara
! scope="row" | Western Sahara
| Claimed by
|-
| 26 0 N 10 0 W type:country Mauritania
! scope="row" |
|
|-
| 15 21 N 10 0 W type:country Mali
! scope="row" |
|
|-
| 12 7 N 10 0 W type:country Guinea
! scope="row" |
|
|-
| 8 26 N 10 0 W type:country Liberia
! scope="row" |
|
|-
| style="background:#b0e0e6;" | 5 49 N 10 0 W type:waterbody Atlantic Ocean
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-valign="top"
| 40 18 S 10 0 W type:country St Helena
! scope="row" |
| Gough Island
|-
| style="background:#b0e0e6;" | 40 19 S 10 0 W type:waterbody Atlantic Ocean
! scope="row" style="background:#b0e0e6;" | Atlantic Ocean
| style="background:#b0e0e6;" |
|-
| style="background:#b0e0e6;" | 60 0 S 10 0 W type:waterbody Southern Ocean
! scope="row" style="background:#b0e0e6;" | Southern Ocean
| style="background:#b0e0e6;" |
|-
| 70 50 S 10 0 W type:country Antarctica
! scope="row" | Antarctica
| Queen Maud Land, claimed by
|-
|}
See also
9th meridian west
11th meridian west
References
collapsed
w010 meridian west