I used to listen to the Fasi Zaka show on fm91 a few years ago (when I didn't have a generator and nothing better to do during load shedding). It was pretty good and based almost entirely on chit chat. He also does shows on education and career counselling occasionally. Dont know the exact time but it comes sometime between 9 and 11pm. You might also be able to get it from soundcloud with some help from google.