<p>Long before smartphones and digital clocks, time was a local affair, creating chaos, confusion and even danger. On location at Royal Observatory, Greenwich in southeast London, <em>HistoryExtra</em>’s Elinor Evans unpacks how astronomers, mathematicians, and global powers collaborated to create Greenwich Mean Time (GMT).</p><p>Joined by Louise Devoy, Senior Curator of the Royal Observatory, Greenwich, we investigate the milestone innovations in this story, including the story of the Observatory Time Ball, the Shepherd Motor Clock, and George Biddell Airy’s meridian Prime Meridian.</p><p>From solving longitude at sea to defining timezones for the entire planet, this is the story of how we learned to master time.</p>
<a href="https://www.historyextra.com/membership/the-place-where-time-began-a-history-of-gmt/" target="_blank" rel="noopener noreferrer">View Green Video on the source website</a>
<p><strong>Find out more about the <a href="https://www.historyextra.com/topic/science-and-technology/">history of time, space and navigation</a> and plan a <a href="https://www.rmg.co.uk" target="_blank" rel="noopener">visit to the Royal Observatory</a></strong></p>
