Change default timezone in API response

Hi ,

We have exposed the Postgres DB through Apigee API proxy. And the postgres data has a column field timestamp, even though the field is with timezone(GMT+0x:00), response we are getting contains the timestamp filed in UTC time zone. like:

"date_time": "2017-01-01T11:00:00.000Z"

We want it to be sent in i.e GMT+0x:00

I can get the timestamp from nodejs app in console.log but not sure how to get the API response timestamp field in IST timezone.

Thanks,

Amit.