title: Getting a universally correct date in a bash script
body: <p>I have a script which is amending a UNIX server time, changing it from its current correct time it is set to, to another time. Once i've changed it, id like to then set it back to the current time in UTC that is correct, synchronizing it with the world again.</p>
  
  <p>Is there a command that can do this? All I know and see are the usual date retrieval commands, but nothing to retrieve a date that is known globally to be 'correct'.</p>