We have a Mac mini build server running 10.9.5 and sometimes the build fails on the codesign command, which fails because of the timestamp on one of the files. The way we usually "fix" this is to simply go on the build server and update the time (either graphically by clicking the clock or in the command line), then the next build will succeed.
In the preferences, the option "Set date and time automatically" is checked and the time server set is Apple Europe (time.euro.apple.com). The machine is always on but usually nobody connects to it for days/weeks (when something goes wrong usually).
This is a bit tedious and time wasting, is there a way to tell Mac OS to keep in sync with the time server more regularly? I could try running a crontab every hour to force time sync but I am wondering if there is something more obvious that I am missing?