I was trying to get post insights using https://graph.facebook.com/v2.4/post_id/insights, but no matter what I set the period, since and until query parameters, I am always getting lifetime metrics. Is there a way to get day metrics for each post?
Specific example: https://graph.facebook.com/v2.4/20767777944_10153119015042945/insights/?access_token=TOKEN&period=day&since=2015-08-23&until=2015-08-23