The Prime Meridian is the imaginary line running between the North and South Poles that's used to indicate 0° longitude. It passes through Greenwich in southeast London, and is therefore sometimes ...

__1884: __Geographers and astronomers adopt Greenwich as the Prime Meridian, the international standard for zero degrees longitude. The late 19th century was an era of standardization. With the Second ...

We can’t see the North-South longitudinal lines, but they are there, and at the historical “zero degrees longitude” or “prime meridian,” all 24 meridians of longitude can be determined. The prime ...