title: Comparing certain part of date only
body: <p>I'd like to know if say i have the following arrays</p>
  
  <pre><code>A = [JAN-2014, FEB-2014, MARCH-2014]
  B = [1-JAN-2014, 13-FEB-2014, 29-MARCH-2014]
  C = [2014-Jan, 2014-Feb, 2014-March]
  </code></pre>
  
  <p>Is it possible to compare the dates between the 3 arrays based on the months only without converting the either one of the array's date format to follow the others?</p>