title: How to standardize/normalize a date with pandas/numpy?
body: <p>With following code snippet</p>
  
  <pre><code>import pandas as pd
  train = pd.read_csv('train.csv',parse_dates=['dates'])
  print(data['dates'])
  </code></pre>
  
  <p>I load and control the data.</p>
  
  <p>My question is, how can I standardize/normalize data['dates'] to make all the elements lie between -1 and 1 (linear or gaussian)??</p>