where does 0 latitude and 0 longitude meet
Null Island Null Island is a fictional island in the Gulf of Guinea added to the Natural Earth public domain map dataset,[1] located where the equator crosses the prime meridian, at coordinates 0°N 0°E﻿ / ﻿0°N 0°E﻿ / 0; 0.[2][3][4] Natural Earth describes the entity as a "1 meter square island" with "scale rank 100, indicating it should never be shown in mapping."[1] The name 'Null' refers to the two 0 co-ordinates, both of which are sometimes known as null in mathematics.
180th meridian The 180th meridian or antimeridian[1] is the meridian 180Â° east or west of the Prime Meridian, with which it forms a great circle dividing the earth into the Western and Eastern Hemispheres. It is common to both east longitude and west longitude. It is used as the basis for the International Date Line because it mostly passes through the open waters of the Pacific Ocean. However, the meridian passes through Russia and Fiji as well as Antarctica.