lor'),
          };
        }
      });

      var calendar = new Calendar(calendarEl, {
        headerToolbar: {
          left  : 'prev,next today',
          center: 'title',
          right : 'dayGridMonth,timeGridWeek,timeGridDay'
        },
        themeSystem: 'bootstrap',
        //Random default events
        events: [
          {
            title          : 'All Day Event',
            start          : new Date(y, m, 1),
            backgroundColor: '#f56954', //red
            borderColor    : 