series.startAngle Number (default: 90)

The start angle (degrees) of the first donut or pie segment.

Angles increase clockwise and zero is to the left. Negative values are acceptable.

Example - set the donut chart series start angle

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  series: [ {
    type: "donut",
    startAngle: 180,
    data: [ 1, 2, 3]
  }]
});
</script>