title: as.POSIXlt is producing NA in R
body: <p>I have tried to find a solution for my problem but could not have found any. So in R I am getting NA when I will run a script below:</p>
  
  <pre><code>as.numeric(as.POSIXlt("Thu May 28 10:39:58 EEST 2015", format="%a %b %d %H:%M:%S EEST %Y"))
  </code></pre>
  
  <p>I have found that the format may not be correct but I will not understand how I should change it. Could anyone know what I am doing wrong?</p>
  
  <p>Thank you for your answers!</p>