Meridian Longitude - !exclusive!

Meridians (or lines of longitude) are imaginary semicircles running north-to-south, connecting the North Pole to the South Pole.

Galileo Galilei proposed using the eclipses of Jupiter’s moons as a cosmic clock. While theoretically sound, it was impossible to observe from a pitching ship deck. meridian longitude

Pilots and captains use these coordinates to chart paths across featureless oceans. Meridians (or lines of longitude) are imaginary semicircles

In 1884, the International Meridian Conference convened in Washington, D.C., to standardize time and navigation. They established the Prime Meridian (0° longitude) at the Royal Observatory in Greenwich, London. This decision was pragmatic; at the time, over two-thirds of the world's shipping already used Greenwich charts. London. This decision was pragmatic