Anytime is ok. At KDES-FM and KPSI-FM we run ours at 5:30am Sunday. What is required is that you put in your public file 5-10 issues in your city of license quarterly, you can determine what the issues are by any means you want, then address them in some manner. Normally a half hour public affairs show can easily accomplish this. Of course the issues can also be covered in PSA's or interviews on a morning as well. At the end of the quarter you list the "programs" time, date and length prior to the 10th of the next month and file it.