selectDates Array (default: [])

Specifies which dates to be selected when the calendar is initialized.

Important: This configuration option requires the selectable: "multiple" option to be set.

Example - set two dates to be selected upon calendar initialization

<div id="calendar"></div>
<script>
    $("#calendar").kendoCalendar({
       selectDates: [new Date(2013, 10, 10), new Date(2015, 10, 10)]
    });
</script>

Check Selection for a live demo.