You may begin at any time. The mere fact that the origins of deity constructs are well known, coupled to the fact that there is no evidence for any of the countless gods and goddesses, is all that's needed to debunk entirely such claims. Science won this debate some 1460 years ago when scientific method started to evolve into a successful methodology. People like you got left behind, that's all. Salk used science to find a cure.
Science finds the answer.
Science always wins, David. It's held in every laboratory, university, class room, and industry in the world. I missed it, Fred. You were in church at the time. Fredric Rice Science has already won.