So, the Big Bang came from a singularity. But the singularity (super-duper density) wasn't "floating in space" because there was no space, yet. Space is a product of the chemistry of the Bang, the inversion/explosion of that singularity.
Time is a product of the Bang, too. The singularity didn't exist in time anymore than that it existed in space.
So, where in tarnation was it? This "thing" that was the beginning but hadn't existed in time itself?
Maybe someone out at the grill knows. Happy Fourth of July.