I agree with Andrea. Leaving equipment with the wrong time is a dangerous practice if you have a problem. We have found a few pieces of equipment with totally the wrong time, date, month even year when we were going round to update the hour change.
Yes, I know this should be checked when a PPM is done - but I don't think we're unusual in not having enough people to do PPMs on anything but the 'high risk' equipment and clocks seem to be appearing in just about everything these days !
You could always train the users to change the time
