sheets.worksLong Story Short Billions of phones run on code looked after by a handful of people. We counted them from the code itself. Your alarm, a boarding pass, a meeting in another country, the day your salary lands: anything on your phone that shows a time has to know where you are. Underneath sit every Android phone, every iPhone and most of the servers on the internet. They all get local time from one text file, the time zone database, which holds every clock rule a government has ever an...