Definition: "t = 0". Confined to a locality in relative time.

t = 0 can mean different things. To us, t = 0 puts a stop to time, also known as "Dornroes'chen Schlaf " (sleeping beauty), in order to explore Consciousness, our "Field right now". Elsewhere, t = 0 may be used to describe the moment of Big Bang seen as the Source to the universe. We call this instant τ = BB, and measure its distance to us in the now in absolute time. τ = BC then would mean "the end at Big Crunch" in contrast to t = 0 BC which refers to the Birth of Christ at maximum universal expansion, and always carries a number. At t = 0 BC we notice that τ, or absolute time, is zero too. From here on it counts backwards. We also see that τ gives us the radius to the expanding and contracting universe and therefore its size at maximum universal expansion. Replacing space with Consciousness, we accept our Field as a sphere. We may wish to calibrate τ such that 2 million G correspond to a Day in the Creation of the world. This is nothing but courtesy. We may further agree that each moment in relative time (dt => 0 or simply "t = 0"), all un-shared illusions balance and fall out. This gets rid of idle fantasy. There is no need to keep this, because in our Field of SC:
 

The rest just "burns" away being of idle fantasy. In the Memory of Man, this plane is seen as "a segment". Here, all extensions in the Absolute are offset in the Dream of the relative. Each has his or her personal home address "in the Body of the Christ". We are scrambled in absolute and relative time on our personal paths in the "rupture & return of the Absolute" around our centre point  at t = 0 BC.