title: How to divide a time-slot in quarter
body: <p>I want to get time quarters based on two times
  For example I have two time string </p>
  
  <pre><code>startTime = 5445458588989  //let suppose 5:10 AM
  endTime = 585556513555     //let suppose 8:40 AM
  </code></pre>
  
  <p>The possible could be a method for example </p>
  
  <pre><code>//typescript
  public getTimeslots(start: number, end: number) number[] {
    //Code goes here
  }
  
  </code></pre>
  
  <p>So I want to get all quarters between these two times.
  This can be possibly an array of time string</p>
  
  <pre><code>[
   445452115,    //5:15 AM
   985455514,    //5:30 AM
   542215558,    //5:45 AM
   321566899,    //6:00 AM
   987585159,    //6:15 AM
   ...
   982148552,    //8:30 AM
  ]
  </code></pre>
  
  <blockquote>
    <p>PS: Strings here may not be valid, just for demonstration</p>
  </blockquote>