JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/2.2.6/fullcalendar.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/fullcalendar/2.2.6/fullcalendar.js"></script>
<div id='calendar'></div>

JavaScript

var items = [];
var json = [{"date":{"day":1,"month":1,"year":2015,"dayOfWeek":4},"localName":"New Year's Day","englishName":"New Year's Day"}]

  $.each( json, function( key, val ) {
      items.push({ title : val.localName, start : val.date } );
  });

$('#calendar').fullCalendar({
    events: items
});