title: How to programmatically change Windows system time?
body: <p>How is the Windows system clock set programmatically?</p>
  
  <p>I'm working with a Java system on XP, but knowing how to do this generally from C, or the command line, is probably the way to go. I can simply invoke some external process.</p>
  
  <p>What privilege level is required by the program that sets the clock?</p>