I also lost my clock today on current 13.10 beta while purging evolution packages and configuration specific to evolution from various places (gconf,.local,.cache,.config) to resolve some broken email accounts which turned out just to be a hangover from gnome-online-accounts being replaced by ubuntu-online-accounts. After restoring the evolution packages and rebooting, my clock disappeared.
My clock was also resolved (appeared in panel, and Clock tab no longer greyed out) by reinstall of indicator-datetime followed by logout/login. ~$ sudo apt-get install indicator-datetime --reinstall -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1197647 Title: Date & Time applet in control center does not start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-datetime/+bug/1197647/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs