title: Momentjs seconds from now till a specific hour
body: <p>I need to get the number of seconds from now till today with a specific hour.</p>
  
  <pre><code>moment().diff(moment().hour(23), 'seconds');
  </code></pre>
  
  <p>The precision is always in hours, I need it to be in seconds.</p>
  
  <p>For example if now is 15:24. I get 28800. </p>