Mondays are out. Other than that, I don't really have any every-week commitments on particular days.
What sort of thing do I have in mind? People gather to read and listen to stories. It is okay to just come to listen. I imagine something like 7-10, so there is enough time for a good number of people to read relatively short pieces (under 1/2 hour, I imagine). I imagine it would end earlier if few enough people showed up who wanted to read. Possibly light snacks if people wanted to bring something, but the focus would really be on reading.