One place that at times has their calls listed is www.iqdcalls.com. otherwise, I would actually just listen to BGG/Poppy3 here...
Dinar Updates calls are almost always announced on the blog ...
Hope this helps!
p.s. .... rumor is there might be a call Saturday afternoon or evening (9/15/12)
If you think today is good, just wait til tomorrow!!
PTR no longer want their calls made public.