djb's clockspeed is amazingly simple, straightforward, and reliable: http://cr.yp.to/clockspeed.html http://cr.yp.to/clockspeed.html . I prefer it to the more

djb's clockspeed is amazingly simple, straightforward, and reliable: http://cr.yp.to/clockspeed.html http://cr.yp.to/clockspeed.html . I prefer it to the more complicated ntp daemons because I can make it do exactly what I want in weird situations.