Mindwerkz

Hello there, new to the boards so forgive me if this is in the wrong place. I was in a discussion recently about relativity and probability and was wondering if anyone could tell me how much 1 days time at the singularity of the universe before the big bang would be in relation to current earth time. As time slows in the presence of gravity, what is the correlation between 1 day at the center of all mass in the universe to earth time. Thanks MW