title: systemd timer OnCalendar always starting next day
body: <p>I want to poweroff my raspberry pi (running Arch ARM) every day at 5 pm. So I created the following service and timer:</p>
  
  <p>poweroff.service:</p>
  
  <pre><code>[Unit]                                                                  
  Description=poweroff service
  
  [Service]
  ExecStart=/usr/bin/poweroff
  </code></pre>
  
  <p>poweroff.timer:</p>
  
  <pre><code>[Unit]                            
  Description=poweroff timer
  
  [Timer]
  OnCalendar=*-*-* 17:00:00
  
  [Install]
  WantedBy=timers.target
  </code></pre>
  
  <p>If I check systemctl list-timers (executed today at 8 am), I get:</p>
  
  <pre><code>NEXT                        LEFT          LAST                       PASSED      UNIT                         ACTIVATES
  Fr 2016-03-18 17:00:00 CET  1 day 9h left n/a                        n/a         poweroff.timer               poweroff.service
  </code></pre>
  
  <p>And that is the problem. This Service never runs since its always aiming for the next day at 5 pm and not the current day. Did I miss a settings to tell OnCalendar that it should aim for 5 pm today? Is this a bug?</p>