title: Regex for Date Format mm/dd/yyyy hh:mm:ss.SSS AM/PM
body: <p>I am looking for a regex  to match my date format in </p>
  
  <blockquote>
    <p>mm/dd/yyyy hh:mm:ss.SSS  AM/PM</p>
  </blockquote>
  
  <p>I found the following online</p>
  
  <blockquote>
    <p>^(((0[13578]|1[02])/.-/.-\s(0[0-9]|1[0-2]):(0[0-9]|[1-59]\d):(0[0-9]|[1-59]\d)\s(AM|am|PM|pm))|((0[13456789]|1[012])/.-/.-\s(0[0-9]|1[0-2]):(0[0-9]|[1-59]\d):(0[0-9]|[1-59]\d)\s(AM|am|PM|pm))|((02)/.-/.-\s(0[0-9]|1[0-2]):(0[0-9]|[1-59]\d):(0[0-9]|[1-59]\d)\s(AM|am|PM|pm))|((02)/.-/.-\s(0[0-9]|1[0-2]):(0[0-9]|[1-59]\d):(0[0-9]|[1-59]\d)\s(AM|am|PM|pm)))$</p>
  </blockquote>
  
  <p>This does not match my date </p>
  
  <blockquote>
    <p>06/12/2014 12:45:56.12 AM</p>
  </blockquote>
  
  <p>How to tweek the above to accept milliseconds also ?</p>