When I went to my first AA meeting many years ago, people were asked to raise their hands, identify themselves and tell the group how long they've been sober. That was standard operating procedure at beginners meetings back then. Three days, ten days...When the woman sitting next to me raised her hand and said that she had seventeen days sober, I was thinking, "How do you not drink for seventeen days?" Then, my untreated alcoholic thinking went a big step further and decided that most of these people were lying so they wouldn't get "kicked out" of AA.
Twenty days is great, and something I never thought I'd see.