This may or may not be the right approach, but it's feasibility was requested of me:
We have a demo server that we update from time to time in order to keep the statistical calculations up-to-date. The only reason we have to do this is some calculations/statistics only show up if they are within the past X days.
It was asked of me if it's possible to stop the system clock on CentOS when calls are made using the UNIX time-stamp. If time were paused, the calculations would be the same every day and we would no longer need to refresh the database with new data.
There are probably other approaches (script to update current data with recent time-stamps, etc), but this request intrigued me and I'm curious if it is possible.