title: Update a date with the current month and year, but always keep the same day
body: <p>In Excel I have:</p>
  
  <ul>
  <li>(H10) Constant -----------17/04/2015 --------Been updating the month manually.       </li>
  <li>(H11) Day Counter -------28 -----------------=DAY(TODAY())   </li>
  <li>(H13) Last Update -------17/04/2015 ------=IF(H11=17, EDATE(H13,1), H10)</li>
  </ul>
  
  <p>I can get the H13 to update to the new month by adding <code>1</code> to the month but once the counter moves off 17 it reverts back to the old date H10.</p>
  
  <p>Is there any way in Excel to keep the <code>17th</code> constant and update only the month and year every 17th?</p>