10 seconds prior to the begining
Christianity and science have the same issue it seems. Christianity, God always existed so that excludes a beginning. Science wants the beginning to happen a bit after 00:00. Before that science also gets a bit vague in that the "nothing" of space (space beginning created in the beginning) seems to be the same nothing before 00:00. So there was no beginning.
The beginning is a reach at best.
Texas, I luv u