Cartography timeline By Sandaaltje 6700 BCE map of Catal Hyuk 3000 BCE Babylonian clay tablets 3000 BCE first map of the moon 600 BCE map of Babylonian empire 600 BCE Pythagoras: earth is a sphere 200 BCE Eratosthenes: circumference, grid 150 BCE Hipparchus: sun based latitude system 150 Ptolemy: world map with coordinates 476 European cartography halts 830 Al-Khwarizmi: world map based on Ptolemy 1030 Al-Biruni develops triangulation 1375 A. Cresques: world map using portolan maps 1569 G. Mercator's projection for navigation 1730 sextant developed 1763 John Harrison: clock for longitude at sea 1884 Greenwich chosen as the prime meridian 1962 Maps made with images from above + GIS 1994 global positioning system developed
