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The vertical axis measured "latitude," and the horizontal axis "longitude." Though prescient, his idea languished for over a millennium.

During the Age of Discovery, beginning in the 15th century, cartographers saw the need for standardized latitude and longitude measurement.

Latitude and longitude Before we explain how time zones solved these clock problems, let's do a quick review of latitude and longitude.His system wasn't officially sanctioned by any global entity, but by 1900 it spawned the adoption of the time zone system in use today.Nation by nation, the world bought into Fleming's idea.However, the selection of a starting point for longitude measurement (the 0-degree meridian) was arbitrary.It was based more on national pride and convenience.Somewhere around 150 BCE, Hipparchus of Nicea, a Greek mathematician and astronomer, proposed a global grid of longitude and latitude lines to measure position.