4 votes How to read a map with a clock | Map Men Posted July 28, 2021 by cfabbro Tags: geography, maps, longitude, clocks, john harrison, comedy, video essays, author.mark cooper jones, author.jay foreman, videos, jay and mark.map men, source.youtube https://www.youtube.com/watch?v=3mHC-Pf8-dU Link information This data is scraped automatically and may be incorrect. Title The longitude problem: history's deadliest riddle Authors Jay and Mark Duration 9:16 Published Jul 28 2021