How we understand time with clocks is fundamentally different than the passage of cosmic time and this is mainly due to our time zones. Let's take a look at the history of timekeeping to see how these two concepts of time coexist in our lives.
Check out Mr. Beat's video here:
https://youtu.be/qjUT7FbmNZ8
00:00 Cold Open
00:43 Clock time is meaningless
02:04 Ancient history of timekeeping
04:05 What is a day?
07:23 Modern history of timekeeping
10:19 Summary
12:18 Outro
12:46 Featured Comment
Nick Lucid - Host/Writer/Editor/Animator
Natalie Wells - Researcher
Vanessa R Bradley - Thumbnail
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VIDEO ANNOTATIONS/CARDS
What is Dark Matter?
https://youtu.be/cncCu7iJE24
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RELATED YOUTUBE VIDEOS
How Earth Moves (Vsauce):
https://youtu.be/IJhgZBn-LHg
Weirdest Time Zones (RealLifeLore):
https://youtu.be/J1kOkoma_hM
Problems with Time Zones (Computerphile):
https://youtu.be/-5wpm-gesOY
Daylight Savings Time (It's Okay To Be Smart):
https://youtu.be/bMrb56dDpic
Daylight Savings Time (Trace Dominguez)
https://youtu.be/w6TtIMeBEvc
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OTHER SOURCES
Ian McNeil. (2002). An Encyclopedia of the History of Technology: Vol. Taylor & Francis e-Library ed. Routledge
https://www.census.gov/popclock/world
https://www.timeanddate.com/time/map/
https://www.jstor.org/stable/43523865
https://www.jstor.org/stable/1005923
https://www.scientificamerican.com/article/experts-time-division-days-hours-minutes/
https://physicsworld.com/a/a-brief-history-of-timekeeping/
https://www.scientificamerican.com/article/a-chronicle-of-timekeeping-2006-02/
https://www.sciencemuseum.org.uk/objects-and-stories/telling-time-sun
https://physics.nist.gov/time
https://www.loc.gov/rr/business/businesshistory/November/day-of-two-noons.html
https://multiverse.ssl.berkeley.edu/Calendar-in-the-Sky/Articles/Chinese-New-Year
https://openstax.org/books/astronomy/pages/4-2-the-seasons
https://eaae-astronomy.org/find-a-sundial/how-does-a-sundial-work
https://en.wikipedia.org/wiki/Equation_of_time
https://slate.com/news-and-politics/2014/02/how-wrong-is-your-time-zone-map-shows-how-far-world-clocks-are-from-solar-time.html
https://explainingscience.org/2015/08/24/september-18-the-shortest-day/
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LINKS TO COMMENTS
https://www.youtube.com/watch?v=cncCu7iJE24&lc=UgzyYE7GHIN1go_FaMR4AaABAg
https://www.youtube.com/watch?v=cncCu7iJE24&lc=UgwIgC1Ewtvh--z6oFd4AaABAg
https://www.youtube.com/watch?v=cncCu7iJE24&lc=Ugxn_bkuLin1NDprPYh4AaABAg
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IMAGE CREDITS
China Clock Tower:
https://commons.wikimedia.org/wiki/File:Clock_Tower_from_Su_Song%27s_Book_desmear.JPG
Moon Phases:
https://svs.gsfc.nasa.gov/4874
Time Zone Map:
https://www.cia.gov/the-world-factbook/maps/world-regional/
October 1582:
https://www.timeanddate.com/calendar/custom.html?year=1582&month=10&country=13&cdt=1&ft=404245_7e8ac48693176768a16cbe006a6613f4&typ=1&display=1&df=1
Earth's Terminator:
https://svs.gsfc.nasa.gov/11353
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