"There's a joke going around the internet about Bill Gates. Here
is how it goes: Bill uses a NIST-F1
(http://www.bldrdoc.gov/timefreq/cesium/fountain.html) to wake himself up every morning."
"We can't all have an atomic clock in our bedroom but what we can do is almost that good. Using your linux box, you could do almost as well. When I say
almost, what I mean is base your computer's system time off of the primary (stratum 1) internet network time servers that communicate time using the
Network Time Protocol. This is a great way to match Bill Gates's wealth with just a simple computer."
"Of course, Bill had them build in a snooze button for his..."
