I just want to chime in and make what could possibly be an argument that may possibly stir the pot a bit more.
I have had several friends who have died and have been revived through resessitation. According to all three, there was no concept of time in the spirit world and the 30 seconds to a few minutes that they were there seemed like a very long time and things happened very quickly and they were able to think clearly and thousands of times faster than what they could think when they were alive. My two Christian friends were dead for a couple of minutes, my formerly atheist friend was only dead for 30 seconds. I think that time does pass in Heaven, but it is irrelevant. I never experienced this for myself, but my 3 friends say that they have. This my deduction anyways.
Curious about the former atheist. Was he an atheist when he had his near death experience? I've heard stories of atheists who do not have pleasant near-death experiences.