FullCalendar конец дня

$(function() {
  $('#calendar').fullCalendar({
    events: [
      {
        "title": "Event 1",
        "start": "2018-08-10T08:00:00+08:00",
        "end": "2018-08-15T07:59:59+08:00",
      },
      {
        "title": "Event 2",
        "start": "2018-08-20T08:00:00+08:00",
        "end": "2018-08-25T07:59:59+08:00",
      }
  ],
  eventClick: function(calEvent, jsEvent, view) {
    alert(calEvent.start);
    alert(calEvent.end);
  }
  });
});

<script src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/3.9.0/fullcalendar.min.js"></script>
<link href = "https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/3.9.0/fullcalendar.min.css" rel = "stylesheet"/>
<div id = "calendar"></div>