Let me start by saying, sometimes I miss the obvious

For the PAW list, how is the days waiting calculated? Smylinatya (by the way, just got that!! Smiling at ya - see what I mean about missing the obvious???!!) got DNA results on 2/2, results rec'd by Embassy on 2/7 and was told of pre-approval on 2/22. But she is listed as 13 days waiting. When does the days waiting start? Wouldn't she be 20 days or 15??
I'm sure I'm missing something because desilu got results 2/2, rec'd by embassy on 2/4, pre-approval rec'd on 2/24 but is listed as 29 days waiting. Help! I'm so confused. Really I'm just trying to figure out wait times...
We got results on 2/16 with results rec'd by Embassy on 2/18. I thought 15 days seemed right for me, but now I'm not sure. Help, I'm drowning in subtraction!