title: Fill a cell range based on start and end date (which will change)
body: <p>My start and end dates will continually change. I need the appropriate cells to highlight the appropriate range between the start and end dates. Each column will have a date heading. The dates will be a month and year and run for a year. For example, Jan 15, Feb 15, Mar 15......Jan 16. How should I write this formula?</p>
  
  <p>Thanks for your help in advance. </p>
  
  <p>If my image does not post, the excel sheet will look like:</p>
  
  <pre class="lang-none prettyprint-override"><code>|Supervisors|Job Number|Start date|End Date|Jan-15|Feb-15|Mar-15...
  | John Doe  |12345-67  | Jan 15   |June 15 |xxxxx |xxxxx |xxxxx 
  </code></pre>