Comment by thelastgallon
Comment by thelastgallon 5 hours ago
There's also NTP.
The Largely Untold Story Of How One Guy In California Keeps The World’s Computers Running On The Right Time Zone: https://onezero.medium.com/the-largely-untold-story-of-how-o...
You forgot the more relevant: https://xkcd.com/149/