Friday. Some people have found it to be exactly 48 hours, while others have found some variation by a few hours.
May 11, '07
I just posted something similar to this on another thread, but my original test date was on a Wednesday, but had to change it due to a death in the family and had to switch it to the following Saturday when I returned to town. I was told I had to wait 3 business days, meaning a Wednesday, but when I called that Monday evening my results were already in that I passed. I was in such disbelief that I called Pearson Tuesday and they told me that it was my results, and that if the volume is not that much, they can possibly even post it the same evening or the next day. Had I known that, I would not have sat at home crying for two days.