I had a NDE at age eight, and although I can't recall much of that time, I always wonder how it impacted me. I find that peace is very similar to stillness, to silence, and it is essentially exactly as you describe it here - beyond time, beyond space...or perhaps simply free of both.
I find my peace in the forest, in the deserts of America, and in any other instance in which I'm mindfully and actively engaged with nature. Clearing out blocked springs near my homes has brought me this peace numerous times. You just never know how a person will connect with it.
I'm so glad you were able to rejoin us for a while on this Earth and share your insight, Ryan!