To subscribe to the course calendar in your own calendaring program, you can use the following URL:
http://www.google.com/calendar/embed?src=p2kcj4ftnho0r7bd4j98mov9ts%40group.calendar.google.com&ctz=America/New_York
You can also use the following URL to subscribe to the official Georgia Tech academic calendar:
http://www.google.com/calendar/embed?src=od1027kq6vn2kju1oiqv3sf7o0%40group.calendar.google.com&ctz=America/New_York