"How do you set the time in your house? I don't mean do you know how to set the clock on your VCR, but what TIME do you actually enter? Do you just use the normal 'best guess' approach that practically everyone else does? If so, then get ready for the real deal - set your clock using THE timekeeping source, the National Institute of Standards and Technology. NIST maintains the primary frequency (time) standard for the United States, and operates a special server using the Network Time Protocol (NTP) to allow Internet users to get the time from them! Of course, if you're not based in the US, don't worry, you can go to the NTP Homepage and get a listing of servers worldwide, so you can pick the one closest to you."