title: How to filter a dataframe of dates by a particular month/day?
body: <p>So my code is as follows:</p>
  
  <pre><code>df['Dates'][df['Dates'].index.month == 11]
  </code></pre>
  
  <p>I was doing a test to see if I could filter the months so it only shows November dates, but this did not work. It gives me the following error: AttributeError: 'Int64Index' object has no attribute 'month'. </p>
  
  <p>If I do </p>
  
  <pre><code>print type(df['Dates'][0])
  </code></pre>
  
  <p>then I get class 'pandas.tslib.Timestamp', which leads me to believe that the types of objects stored in the dataframe are Timestamp objects. (I'm not sure where the 'Int64Index' is coming from... for the error before)</p>
  
  <p>What I want to do is this: The dataframe column contains dates from the early 2000's to present in the following format: dd/mm/yyyy. I want to filter for dates only between November 15 and March 15, independent of the YEAR. What is the easiest way to do this? </p>
  
  <p>Thanks. </p>
  
  <p>Here is df['Dates'] (with indices):</p>
  
  <pre><code>0    2006-01-01
  1    2006-01-02
  2    2006-01-03
  3    2006-01-04
  4    2006-01-05
  5    2006-01-06
  6    2006-01-07
  7    2006-01-08
  8    2006-01-09
  9    2006-01-10
  10   2006-01-11
  11   2006-01-12
  12   2006-01-13
  13   2006-01-14
  14   2006-01-15
  ...
  </code></pre>