Here is a part of "man hwclock"
The System Time is the time that matters. The Hardware
Clock's basic purpose in a Linux system is to keep time
when Linux is not running. You initialize the System Time
to the time from the Hardware Clock when Linux starts up,
and then never use the Hardware Clock again. Note that in
DOS, for which ISA was designed, the Hardware Clock is the
only real time clock.
It is important that the System Time not have any discon¡
tinuities such as would happen if you used the date(1L)
program to set it while the system is running. You can,
however, do whatever you want to the Hardware Clock while
the system is running, and the next time Linux starts up,
it will do so with the adjusted time from the Hardware
Clock. You can also use the program adjtimex(8) to
smoothly adjust the System Time while the system runs.
On Wednesday, June 26, 2002 3:09 AM, Robert P. J. Day
[SMTP:[EMAIL PROTECTED]] wrote:
>
> my system clock just backed up another four hours -- to 3 am --
> with no intervention on my part. and the hw clock still shows
> 7 am. what on earth is going on here? any hints would be
> appreciated.
>
> rday
>
>
>
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