title: Finding closest date to a specified date in sas dataset?
body: <p>Based on the data could anyone assist me - making a program that contains</p>
  
  <p>test_date closest to delivery_date.</p>
  
  <p><strong>delivery_date</strong>       11/16/2011      </p>
  
  <p><strong>test_date</strong>           21/nov/2011                10/nov/2011           5/oct/2010</p>
  
  <p>Thanks in advance</p>