title: Converting date to a day of week in R
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/9216138/find-the-day-of-a-week-in-r">Find the day of a week in R</a>  </p>
  </blockquote>
  
  
  
  <p>I have a data for days like 11-01-2011 etc. But I want to add the data corresponding
  the date as Monday, Tuesday etc. Is there any R package that contains the information of the dates with days?</p>