Mailinglist Archive: opensuse (1480 mails)

[Dave Howorth <dhoworth@xxxxxxxxxxxxxxxxx>]

Dave Howorth wrote:
> Whatever is in the CMOS doesn't affect the kernel's system clock. That
> is UTC as Werner said.

This thread's been going long enough that perhaps it's worth restating
the clocks:

(1) hardware/CMOS/BIOS clock - only used at booting. Should normally be
UTC but some versions of Windows required it to be set in the local time
of the administrator.

(2) kernel's internal time - always UTC

(3) system-wide time - should be set to the time zone of the machine
that is running the system

(4) user time - individually set to the local time of each individual
user - defaults to the system time

N.B. That's for a computer kept in a single place, though possibly with
users around the world. I don't know what the convention is on a mobile
computer, though (1), (2) and (4) are unchanged.
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