title: Why do i get '1900-01-01' in my time column in pandas
body: <p>I am working on a Data Frame in <code>pandas</code>. I wanted to convert my <code>time</code> column into <code>to_datetime</code>, I am getting <strong>1900-01-01</strong> before my time. </p>
  
  <p>Some sample data,</p>
  
  <pre><code>  Date              hour
  01-06-2013      23:00:00
  02-06-2013      01:00:00
  02-06-2013      21:00:00
  02-06-2013      22:00:00
  02-06-2013      23:00:00
  03-06-2013      01:00:00
  03-06-2013      21:00:00
  03-06-2013      22:00:00
  03-06-2013      23:00:00
  04-06-2013      01:00:00
  </code></pre>
  
  <p>This what I tried, </p>
  
  <pre><code>df['hour'] = pd.to_datetime(df['hour'],format ='%H:%M:%S', errors = 'coerce')
  </code></pre>
  
  <p>I am getting like this,</p>
  
  <pre><code>print(df['hour'])
  
  0        1900-01-01 23:00:00
  1        1900-01-01 01:00:00
  2        1900-01-01 21:00:00
  3        1900-01-01 00:00:00
  </code></pre>
  
  <p>I do not need 1900-01-01 in my <code>df</code>. Why is this happening and how can I get rid of this?</p>