Meridian Line __link__ Jun 2026

| Term | Definition | |------|-------------| | | Any imaginary line from North to South Pole (line of constant longitude). | | Prime Meridian | The 0° longitude line through Greenwich, England. | | Antimeridian | The 180° meridian, roughly the International Date Line. | | Local Meridian | The north-south line directly overhead at your location. |

The meridian line is more than a cartographer's ink. It is the backbone of our global synchronization. Without the agreement on a Prime Meridian, global trade would be chaotic, international travel would be dangerous, and the concept of a shared "world time" would not exist. It transforms a spherical planet into a navigable grid, connecting the North Pole to the South, and history to the future. meridian line

In geography and astronomy, a is an imaginary semicircle that runs from the North Pole to the South Pole. Every point on Earth that lies along the same meridian experiences solar noon (when the sun is at its highest point in the sky) at the same moment. | Term | Definition | |------|-------------| | |

For centuries, finding one's latitude (distance north or south) was easy—you simply measured the angle of the sun or the North Star. However, calculating longitude (which meridian you were on) was the great scientific challenge of the 18th century. | | Local Meridian | The north-south line

A meridian is a . Unlike lines of latitude (which run parallel like steps on a ladder), meridians are not parallel. They all converge at the North and South Poles. Every point on Earth lies on a specific meridian, defining its east-west position.