xen guest unable to set time

I´ve a little problem in xen guest machines. The hardware UTC time is grather than the insanity time (ntp doesn´t works) and I can´t change the date and time from yast. I can`t access the hwclock information (errno=19) unable to get /dev/rtc.

Any suggestion¿?

Thanks in advance.

I wouldn’t expect a guest OS to actually have an independent clock. It would be in the host OS that you have to correct the hw clock.