Take a look at timedatectl(1). It will save a lot of trouble.
Look at the subject line: GUI
Know all about timedatectl, but want a simple world map. Command line
does not save a lot of trouble if the city you landed in is not one of
the choices. Being able to see a map of what is nearby is.
Actually was point to one proposed for Xfce:
On Mon, Jun 11, 2018 at 5:57 PM, Joe Zeff <joe(a)zeff.us> wrote:
> I expect to be moving to a different time zone in a few months, and wanted
> to make sure that I can easily change the time zone on my desktop, running F
> 25 and Xfce. The Time and Date program on my Settings menu didn't run, but
> I was able to look in with a menu editor and see that the command line was:
>
> gnome-control-center datetime
>
> Running that from a terminal worked, once. Later that day, I tried again,
> and it had stopped understanding that argument. Since then, it's not been
> working. Checking, dnf doesn't recognize the program and
>
> rpm -q --whatprovides gnome-control-center
>
> returns no results. Presumably, the program's an orphan from an earlier
> release. I know that I can change the time zone from a CLI with
> timedatectl, but that's not the issue. Up until recently, I had a working
> GUI program to deal with this and not only did it stop working for no
> apparent reason, there doesn't seem to be a replacement. I'm sure that
> there are many people using Linux on laptops while traveling for business,
> and not all of them are willing to open a terminal just to change from
> Pacific to Mountain time, or back. I'm sure that there must be a way to do
> it, but I haven't found any. Suggestions?
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