Date is set automatically after turning this setting on. I'm closing this report but it is clearly not obvious.
** Changed in: gnome-control-center (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1719324 Title: 'Set date automatically' doesn't work Status in gnome-control-center package in Ubuntu: Won't Fix Bug description: I'm travelling from France to US (NYC) The date is set to 'update automatically' but the time is still France time, even after a reboot. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-control-center 1:3.26.0-0ubuntu2 ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1 Uname: Linux 4.13.0-11-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Sep 25 15:59:03 2017 InstallationDate: Installed on 2013-09-03 (1482 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1719324/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp