title: pandas - Increase datetime hour(More information is in the article.)
body: <p>I pulled out one column from the data frame and added it to a variable named timestamp.</p>
  
  <pre><code>0    2017-01-10 04:45:00
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  Name: timestamp, dtype: object
  </code></pre>
  
  <p>The type of data is:</p>
  
  <pre><code>type(timestamp)
  
  Out[1]: pandas.core.series.Series
  
  type(timestamp.values)
  
  Out[1]: numpy.ndarray
  </code></pre>
  
  <p>What I want to do is add 9 hours.</p>
  
  <pre><code>0    2017-01-10 13:45:00
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  Name: timestamp, dtype: object
  </code></pre>
  
  <p>I would appreciate it if you could tell me what I should do.</p>