Longitude

What is the longitude and latitude of Guyana?
Guyana's latitude and longitude is 5° 00' N and 59° 00' W . Below is the map of Guyana showing major towns, roads, airports with latitudes and longitu...
What did john harrison do using longitude and latitude?
John Harrison (3 April [O.S. 24 March] 1693 – 24 March 1776) was a self-educated English carpenter and clockmaker who invented the marine chronometer,...