To do so, the kernel has to briefly turn off periodic interrupts;
this might affect programs using that RTC.
-An RTC's Epoch has nothing to do with the POSIX Epoch which is only
-used for the system clock.
+An RTC's Epoch has nothing to do with the POSIX Epoch which is
+used only for the system clock.
If the year according to the RTC's Epoch and the year register is
less than 1970 it is assumed to be 100 years later, that is, between 2000