Why do clocks go clockwise? Neil deGrasse Tyson and comedian Chuck Nice ponder about the way we tell our time and more. We think about time geometrically and the history of timekeeping with sundials. What if timekeeping had been invented in the southern hemisphere? Plus, we discuss precision, synchronization, and chronometers on boats. Get the NEW Cosmic Queries book (5/5 ⭐s on Amazon!): https://amzn.to/3dYIEQF Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #neildegrassetyson 00:00 - What’s up with clocks? 4:22 - Inventing the Sundial 7:24 - Counterclockwise Clocks 9:39 - Digital Clocks 12:00 - Precise Time 14:32 - Chronometers on Boats