Today is 23 gen 2012. I'm querying Facebook Insights with FQL using PHP SDK. The metrics show different delay in insights updates:
page_friends_of_fans metric
: available for 20 gen 2012 and before, not available for 21 gen 2012page_fans
: available for 21 gen 2012 and before, not for 22 gen 2012
First date of availability for both is then: 20 gen 2012. Pattern could be today minus 3 days. Since i have to specify end_date parameter, is there any reliable way of getting the last available date?