I am an AAer. I am also a Christian. In my home group there are usually about 30 people, and I'd hazard a guess incuding me there are between 3 and 5 Christians at that meeting at the most on an average evening. I know plenty of atheists in AA, many of them who have used the program to make their sobriety bearable, sustainable and, nowadays, preferable to drinking, and they have years (even multiple decades of comfortable sobriety behind them, which they attribute to the program).
Just interested, what made you choose that particular date? What makes you think it will be easier or more manageable then than today or tomorrow?