title: Get only datetime from list of strings
body: <pre><code>lst = ['Last Modified (GMT)', 'Size', '26-Mar-2022 09:17', '',
         '22-Mar-2022 17:30', '', '31-Jan-2022 18:44', '',
         '26-Mar-2022 09:17', '30.8 MB']
  </code></pre>
  <p>How to get only dates from this list of strings in python?</p>
  <p>Output should be - 26-Mar-2022 09:17
  22-Mar-2022 17:30
  31-Jan-2022 18:44
  26-Mar-2022 09:17</p>