title: Express Validator to validate DateTime
body: <p>I want to validate DateTime like this code below</p>
  
  <pre><code>{
      "data": {
          "start": "2018-05-12 08:00:00"
      }
  }
  </code></pre>
  
  <p>How to combine isISO8601() and match(regex) to validate date &amp; time in start</p>
  
  <pre><code>body('*.start')
    .exists()
    .not()
    .isEmpty()
    .withMessage('start cannot be empty')
    .isISO8601('yyyy-mm-dd')
    .matches('^([0-9]|0[0-9]|1[0-9]|2[0-3]):[0-5][0-9]$')
    .withMessage('start must be in correct format yyyy:mm:dd hh:mm:ss'),
  </code></pre>