18th meridian west

The meridian 18° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, Greenland, Iceland, the Atlantic Ocean, the Canary Islands, the Southern Ocean, and Antarctica to the South Pole.

The 18th meridian west forms a great circle with the 162nd meridian east.

From Pole to Pole
Starting at the North Pole and heading south to the South Pole, the 18th meridian west passes through:


 * {| class="wikitable plainrowheaders"

! scope="col" width="125" | Co-ordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes ! scope="row" style="background:#b0e0e6;" | Arctic Ocean ! scope="row" | 🇬🇱 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇬🇱 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇬🇱 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇬🇱 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇮🇸 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇮🇸 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇪🇸 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" | 🇪🇸 ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean ! scope="row" style="background:#b0e0e6;" | Southern Ocean ! scope="row" | Antarctica
 * style="background:#b0e0e6;" | 90°N, -18°W
 * style="background:#b0e0e6;" | 90°N, -18°W
 * style="background:#b0e0e6;" |
 * -valign="top"
 * 82.13333°N, -18°W
 * Prinsesse Margrethe Island, Prinsesse Dagmar Island, and mainland
 * style="background:#b0e0e6;" | 79.68333°N, -18°W
 * style="background:#b0e0e6;" | 79.68333°N, -18°W
 * style="background:#b0e0e6;" | Greenland Sea
 * 78.78333°N, -18°W
 * 78.78333°N, -18°W
 * Bourbon Island
 * style="background:#b0e0e6;" | 78.73333°N, -18°W
 * style="background:#b0e0e6;" | 78.73333°N, -18°W
 * style="background:#b0e0e6;" | Greenland Sea
 * 77.76667°N, -18°W
 * 77.76667°N, -18°W
 * Ile de France
 * style="background:#b0e0e6;" | 77.61667°N, -18°W
 * style="background:#b0e0e6;" | 77.61667°N, -18°W
 * style="background:#b0e0e6;" | Greenland Sea
 * 75.4°N, -18°W
 * 75.4°N, -18°W
 * Shannon Island
 * style="background:#b0e0e6;" | 75.01667°N, -18°W
 * style="background:#b0e0e6;" | 75.01667°N, -18°W
 * style="background:#b0e0e6;" | Greenland Sea
 * 66.55°N, -18°W
 * 66.55°N, -18°W
 * Island of Grímsey
 * style="background:#b0e0e6;" | 66.51667°N, -18°W
 * style="background:#b0e0e6;" | 66.51667°N, -18°W
 * style="background:#b0e0e6;" |
 * 66.15°N, -18°W
 * 66.15°N, -18°W
 * style="background:#b0e0e6;" | 63.51667°N, -18°W
 * style="background:#b0e0e6;" | 63.51667°N, -18°W
 * style="background:#b0e0e6;" | 63.51667°N, -18°W
 * style="background:#b0e0e6;" |
 * 28.76667°N, -18°W
 * 28.76667°N, -18°W
 * Island of La Palma
 * style="background:#b0e0e6;" | 28.75°N, -18°W
 * style="background:#b0e0e6;" | 28.75°N, -18°W
 * style="background:#b0e0e6;" |
 * 27.8°N, -18°W
 * 27.8°N, -18°W
 * Island of El Hierro
 * style="background:#b0e0e6;" | 27.63333°N, -18°W
 * style="background:#b0e0e6;" | 27.63333°N, -18°W
 * style="background:#b0e0e6;" |
 * style="background:#b0e0e6;" | -60°N, -18°W
 * style="background:#b0e0e6;" | -60°N, -18°W
 * style="background:#b0e0e6;" |
 * -72.53333°N, -18°W
 * -72.53333°N, -18°W
 * Queen Maud Land, claimed by 🇳🇴
 * }
 * }