It is known as the International Date Line.
latitude or longitude...
Coordinates.
Latitude will always be north and south on a world map. Longitude will always be east and west on a map.
Downfall.
The line on the map is called the ratocoal.
The specific point on a map indicated by latitude and longitude is called a "geographic coordinate." These coordinates provide a precise location on the Earth's surface, where latitude specifies the north-south position and longitude specifies the east-west position. Together, they allow for accurate mapping and navigation.
A globe or a map.
A world map would be a map (or chart) that displays all of the continents, complete with longitude and lattiude markings, equators and depending on the type of map, cities, states and countries.
latitude and longitude Co-ordinates
I believe you are looking for the words - Longitude and Latitude of the grid system.
Indicating the position of a celestial object is similar to latitude latitude and longitude. But it is called right ascension and declination.
The lines on a map that run north-south are called meridians of longitude, and the lines that run east-west are called parallels of latitude. These lines help to indicate the location and coordinates of different places on Earth.