title: Laravel Carbon, set specific hours:minutes:seconds
body: <p>I have a Carbon date like:</p>
  
  <pre><code>$new_days_count = Carbon::now();
  
  dd($new_days_count);
  
  Carbon {#764 ▼
    +"date": "2019-07-20 19:06:49.119790"
    +"timezone_type": 3
    +"timezone": "UTC"
  }
  </code></pre>
  
  <p>Now, I want to set a specific hours:minutes:seconds to that time, in order to have:</p>
  
  <pre><code>Carbon {#764 ▼
    +"date": "2019-07-20 23:59:59.000000"
    +"timezone_type": 3
    +"timezone": "UTC"
  }
  </code></pre>
  
  <p>How can I set it? I want to set always at <code>23:59:59.000000</code></p>