Welcome abcde, so glad you made the decision to join us. In AA they say, if you can't remember your last drunk, you haven't had it.
We are all different. I reached out and asked for help on August 8th, so that date is what is special for me. I had a glass of wine with a friend who was leaving to go back to Hawaii. We met at college. I didn't have a drink after that. I started detoxing from my medication that day too and took the last pill the day I went into treatment in November 2nd. I stopped abusing my medication and stopped all narcotics. Pills were like dried up alcohol to me.
Hopefully you can come up with a date, so you can celebrate at your home group. We don't do it for ourselves, we do it for others to show them that the program works.