CCAC is an abbrievation for The Computer-Club At The RWTH Aachen (ComputerClub an der RWTH Aachen e.V.). It is a meeting place for everybody in Aachen/Germany, who is interested in Computers / Programming / Web-Stuff / Operating Systems / Troubleshooting, etc.
Opening times are nearly every Evening from 1900h-2100h CET.
There are different groups each evening. To see which groups are on what day, and maybe contact somebody, just visit the website.
Everybody is welcome, not only students of the university in Aachen - just check it out ;-)
Website at : http://www.ccac.rwth-aachen.de/