title: Convert a string (format: 01JAN2015:00:00:00) to datetime python
body: <p>I have a pandas dataframe with dates in the following format: 01JAN2015:00:00:00</p>
  
  <p>I want to convert these dates to the datetime format. I tried some variations presented in the forum but could not do it.</p>
  
  <p>Can someone, please, help me with that?</p>
  
  <p>Thanks a lot,</p>
  
  <p>Rodrigo.</p>