你管API实时流计划时区

I am using the following time format in You tube API to schedule Live Streaming.

"2015-08-28T00:00:00.000Z"

 $broadcastSnippet->setScheduledStartTime('2015-08-28T00:00:00.000Z');
  $broadcastSnippet->setScheduledEndTime('2015-08-29T00:00:00.000Z');

After the scheduling the live stream.It's created in GMT-7 timezone.i need to create the live stream in GMT+5:30.

How can i schedule live stream in GMT+5:30.

Please suggest