No guarantees, but the following iCal files should automatically load into your personal calendar program (Outlook, Lightning, GMail, etc.)
CS101 sections 1, 2 & 3 - Fall 2010
Bilkent Academic Calendar - Fall 2010
see also - Upcoming events in Bilkent
Turkey Public Holidays - 2010 (thanks to ???)
UK Public Holidays - 2010 to 2013 (thanks to ???)