Source: wikibot/4th-meridian-west
= 4th meridian west
{wiki=4th_meridian_west}
The 4th meridian west is a line of longitude that is 4 degrees to the west of the Prime Meridian, which is located at 0 degrees longitude. The Prime Meridian runs through Greenwich, London, and serves as the baseline for measuring longitude. The 4th meridian west, therefore, passes through several countries as it extends from the North Pole to the South Pole.