History of Europe

Is Portugal completely west of the prime meridian?

Yes, Portugal is completely west of the prime meridian. The prime meridian is a line of longitude that passes through the Royal Observatory in Greenwich, England. It is the starting point for measuring longitude, with locations west of the prime meridian having negative longitude and locations east of the prime meridian having positive longitude. Portugal is located entirely to the west of the prime meridian, with its westernmost point being the island of Flores in the Azores archipelago, which has a longitude of -31.17°.