Comment 6 for bug 1196059

I can confirm this is still present in some cases. I don't have the problem on my standard desktop machine running Saucy, but I do have it on my Acer C720 Chromebook running Saucy.

indicator-datetime:
  Installed: 13.10.0+13.10.20131023.2-0ubuntu1
  Candidate: 13.10.0+13.10.20131023.2-0ubuntu1
  Version table:
 *** 13.10.0+13.10.20131023.2-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     13.10.0+13.10.20131016.2-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages

I get "unsupported date format "%a %b %e %H:%M"" when I try to enable weekday, day, and month.

Perplexingly, the same format works just fine from the terminal:

me@chrubuntu:~$ date +"%a %b %e %H:%M"
Mon Feb 10 16:22

Is the indicator referencing a different date command?