title: Check if dataframe contain Date or Time
body: <p>I want to check if dataframe contain a date or datetime value in python dataframe. It is possible to do it ?</p>
  
  <pre><code>df = {'Latitude':['19.34', '19.42', '-4.34', '35.10'], 
        'Date':['2019-03-13', '2016-07-08', '2018-03-08', '2014-01-17']} 
  </code></pre>
  
  <p>and make a function to check date</p>
  
  <pre><code>def CheckDate():
  
      return True
  
  
  
  
  CheckDate(df)
  True
  </code></pre>