I'm not sure I understand your question.

But the real-time clock on your PC is usually implemented as a hardware device, powered by a Lithium battery so the clock keeps running even when the power is off. It's the same battery that keeps your CMOS memory intact.

I don't think you can adjust the rate that it runs at.
At least, not without removing it from the board and using the manufacturer's calibration mechanisms, which are unlikely to permit adjustment outside of a few seconds per day.



Universal time may or may not be relevant to an operating system.
Round-robin schedulers work on fixed time slices, switching between tasks at predermined intervals e.g. 20ms.

If you make your clock run at 1/60th of real time, there's the chance you could muck up this scheduling. At best your computer would run very slowly. At worst it wouldn't run at all.

There could be other timing issues as well; reading/writing data to disk drives (floppies rather than hard drives) may well be controlled by software timing.