How to integrate a private Google Calendar? My client is a counseling center that would like to use Google Calendar to record and manage confidential information when clients schedule appointments online.  The catch is that they want it to be a private Google Calendar.  

Is this possible?  

Can a private Google Calendar be embedded with a drupal site?
Check Google Calendar API (GCal)

This module uses google api php client refer
http://code.google.com/p/google-api-php-client/ to interact with
google and manage calendars
Requirements
GAuth - Required for authenticating with google.