title: How to read 12h (AM/PM) timeformat in gnuplot
body: <p>I want to generate some nice graphs by using existing and auto generated data files. Unfortunately I cannot change the format of the files. </p>
  
  <p>The lines contain a timestamp and a value. e.g.</p>
  
  <pre><code>July 06, 2014 at 12:46PM 84.6
  </code></pre>
  
  <p>In Gnuplot I can use the given format identifier to read the timestamp. But there is no possibility to separate between AM oder PM time.</p>
  
  <pre><code>set timefmt "%B %d, %Y at %H:%M"
  </code></pre>
  
  <p>Any suggestions on this problem?</p>