[X4U] How often is time set?

[Craig A. Finseth]

   Interesting, tho, that Unix doesn't "like" having its clock set 
   backwards. So, great...sounds like it's checked and modified as needed 
   on a more or less hourly basis.

Yes, internal timers and things can get very confused.

Setting forwards is not problem.  The semantics for all the timers and
waits is that the value is the _minimum_ amount of time until it triggers.

(Of course, real-time versions have other semantics, but that out of scope.)

Craig