Yes, the past, the present and the future all happen simultaneously. At first, consider a three dimensional building. Let's say you have parked a car at the basement of a building. There is a roof at the top of the building but you can't see it y Philosophically, YES. It all happens at the same time. It's simple to say its happening at the same time, This very minute I'm writing this, It was the future, its the present now, and its going to be the pass, so what is the present now, its going to be the pass, and it was the future. so its all happening at the same time.