In 2012, two servers run by the U.S. Navy rolled back their clocks 12 years, deciding it was the year 2000. The servers were very important: they’re part of a worldwide network that helps computers ...

On most modern computers, you can either set the clock manually or have it automatically sync with an internet clock server that will tell it what time it is. You may find your computer clock wrong if ...

A master time-of-day clock that computer and satellite networks are synchronized with worldwide. An atomic clock is known to be the most accurate measurement of time because it relies on a constant ...

Reader Dan loves his Asus netbook–but not its clock. Every time he turns the machine off, it seems to lose a couple hours. But the minutes, he notes, remain accurate. There are a number of reasons a ...