I have recently come across a couple of games that trigger certain events only at certain times and/or dates (Superbrothers Sword & Sworcery, and FEZ).
If I want for such events to happen, I would have to wait for that times, but obviously, I could simply change my systems time to make the game "think" it is already such time.
My question is, how could that affect the regular behavior of my computer? Would changing times and dates affect something important, like maybe some non-user scheduled tasks, or keeping files synced or something?
What could be the "worst case" consequences of doing it?
I know that for instance, most backup programs know that in certain cases, files may have a difference of exactly one hour, for the cases of Daylight saving time changes, and they ignore such differences (if the files are the same size, etc). But what about other programs, and with differences of not only an hour, but several, and maybe even complete days?
So, in general, is it a bad idea to change my systems time, and I should just wait for the "real" time to happen? Or is it relatively "safe" to do it and then simply change it back when done?
I have also tried a program called "RunAsDate" that supposedly tells the application you choose to run on a specific date and time, but it didn't work (the games executables never run, but I haven't tried with other .exe's). Are there other programs capable of that?
Additional info: I am using Windows 8 pro, as for hardware specs I guess they are irrelevant.