title: Check if daylight savings is in effect?
body: <p>How to check if in Denmark daylight time savings has taken effect, if so, then add 1 hour to my data, else not?
  I have a xml file:</p>
  
  <pre><code>&lt;day = "1"
  month = "5"
  sunrise ="06:30"
  sunset ="21:30"
  /&gt;
  </code></pre>