SOLVED!
if someone needs it, the program doesnt save the file in utf-8 so all you need to do is to open the file "calender-locals.js" in the directory components/com_comprofiler/plugin/language/your language/ and translate it.
the easiest way is next o the english one, because the hebrew one is jibrish so you cant tell what you are translating
enjoy,
Ronen.