SetClock can be used to:
o Load the time from the battery backed-up clock,
o Save the time to the battery backed-up clock,
o Reset the battery backed up clock.
SetClock LOAD
will set the system time from the battery backed-up clock.
In most systems this will be done automatically during
system startup.
SetClock SAVE
will set the time of the battery backed-up clock from the
current system clock time.
SetClock RESET
will reset the battery backed-up to a value of the
1st January 1978 00:00:00. This is mostly used if the
battery backed-up clock has an error and will not
respond to normal load and save commands.