Hello Liska,
You are spot on.
PFCG_TIME_DEPENDENCY will run perfectly if you assign it for friday and execute the job on friday. For future dates, it will just reset and get the things to red.
Have a look on this thread where it is discussed already.
http://scn.sap.com/thread/3261999
Let me know if you need further explanation on this.
Regards
Deepak M