, which is the angular distance of a location east or west of the Prime Meridian. Core Concepts Meridians vs. Longitude
These extraterrestrial meridians allow planetary scientists to map rover locations, plan landings, and coordinate interplanetary missions. meridian longitude
meridian generally marks the International Date Line in the Pacific Ocean. 3. The Prime Meridian and the Universal Day , which is the angular distance of a
longitude, is the internationally agreed-upon starting point for longitudinal measurement. meridian longitude
In the age of digital mapping, meridian longitude is more relevant than ever. Global Positioning System (GPS) coordinates use decimal degrees of longitude and latitude to provide accuracy down to a few centimeters.