On 11/19/18 9:05 PM, Louis Lagendijk wrote: > 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 >
If you do that it will modify /etc/adjtime to add "LOCAL" to the end of the file. The next time you run "timedatectl" you'll get this warning. Warning: The system is configured to read the RTC time in the local time zone. This mode cannot be fully supported. It will create various problems with time zone changes and daylight saving time adjustments. The RTC time is never updated, it relies on external facilities to maintain it. If at all possible, use RTC in UTC by calling 'timedatectl set-local-rtc 0'. The goal here is to have all log entries easy to search and have no ambiguity. The proven way to do that is set the hardware clock on the BIOS equal to the time in UTC/GMT. -- Right: I dislike the default color scheme Wrong: What idiot picked the default color scheme _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
