[otrs] Calendar for OTRS 2.1.1

Hi guys, Is there a calendar opm package available for OTRS 2.1.1 ? I have not had any luck finding one, every package I have found has been for the incorrect framework, and given me "Error: Sorry, can't install package, because package is not for your Framework!!" The online repository only shows me the FAQ package, which I already have installed. Thanks in advance! Patric