On Mon, 2018-11-19 at 06:24 +0800, Ed Greshko wrote:
> On 11/19/18 5:51 AM, Stephen Morris wrote:
> > Sure, but if the user is in the United Kingdom where they use GMT,
> > then presumably they
> > would run their entire system in GMT, whereas other locations may
> > or may not want to, so
> > the motherboard should provide that option, and I have had
> > motherboard that do offer the
> > option, and I have always set them to local time.
>
> People in the "UK" won't use GMT/UTC as they also "spring forward"
> and "fall back".
>
> The time zone of a system is establish by the symbolic link
> /etc/localtime.
>
> Their link will be set to "../usr/share/zoneinfo/Europe/London"
>
> > If the time configuration is being set by the OS, and F28 doesn't
> > seem to have the
> > options to do that setting, especially for daylight savings time,
> > how does daylight
> > savings time get set/unset correctly, or is the fact that this F28
> > system has been
> > upgraded from older Fedora distributions that did have the options,
> > and the option to
> > tie the time maintenance to a Network Time Clock, that those
> > options have been
> > retained but hidden by F28?
>
> The zoneinfo files have all the info necessary to determine when
> "daylight" time begins
> and ends.
and if you want to run the hwclock to be in local time rather then UTC
you can set the system to honor that from the CLI:
[louis@travel ~]$ timedatectl --help
timedatectl [OPTIONS...] COMMAND ...
Query or change system time and date settings.
-h --help Show this help message
--version Show package version
--no-pager Do not pipe output into a pager
--no-ask-password Do not prompt for password
-H --host=[USER@]HOST Operate on remote host
-M --machine=CONTAINER Operate on local container
--adjust-system-clock Adjust system clock when changing local RTC
mode
--monitor Monitor status of systemd-timesyncd
-p --property=NAME Show only properties by this name
-a --all Show all properties, including empty ones
--value When showing properties, only print the
value
Commands:
status Show current time settings
show Show properties of systemd-timedated
set-time TIME Set system time
set-timezone ZONE Set system time zone
list-timezones Show known time zones
set-local-rtc BOOL Control whether RTC is in local time
set-ntp BOOL Enable or disable network time
synchronization
systemd-timesyncd Commands:
timesync-status Show status of systemd-timesyncd
show-timesync Show properties of systemd-timesyncd
[louis@travel ~]$
so a "timedatectl set-local-rtc yes (or so, I am not sure what boolen
values are accepted) should do the trick. I still recommend UTC though
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